diff --git a/.editorconfig b/.editorconfig
index 1be295016c4..774dcf3db5f 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -16,6 +16,7 @@ ij_kotlin_packages_to_use_import_on_demand = java.util.*, io.ktor.**
 ktlint_standard_no-wildcard-imports = disabled
 ktlint_standard_trailing-comma-on-call-site = disabled
 ktlint_standard_trailing-comma-on-declaration-site = disabled
+ktlint_standard_no-empty-first-line-in-class-body = disabled
 ktlint_standard_filename = disabled
 ktlint_standard_class-naming = disabled
 ktlint_standard_annotation = disabled
diff --git a/buildSrc/src/main/kotlin/KotlinExtensions.kt b/buildSrc/src/main/kotlin/KotlinExtensions.kt
index 610463b7f20..72c6def8fb1 100644
--- a/buildSrc/src/main/kotlin/KotlinExtensions.kt
+++ b/buildSrc/src/main/kotlin/KotlinExtensions.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 import org.gradle.api.*
 import org.gradle.kotlin.dsl.*
@@ -47,16 +47,6 @@ fun NamedDomainObjectContainer<KotlinSourceSet>.jvmAndPosixTest(block: KotlinSou
     block(sourceSet)
 }
 
-fun NamedDomainObjectContainer<KotlinSourceSet>.jvmAndNixMain(block: KotlinSourceSet.() -> Unit) {
-    val sourceSet = findByName("jvmAndNixMain") ?: getByName("jvmMain")
-    block(sourceSet)
-}
-
-fun NamedDomainObjectContainer<KotlinSourceSet>.jvmAndNixTest(block: KotlinSourceSet.() -> Unit) {
-    val sourceSet = findByName("jvmAndNixTest") ?: getByName("jvmTest")
-    block(sourceSet)
-}
-
 fun NamedDomainObjectContainer<KotlinSourceSet>.nixTest(block: KotlinSourceSet.() -> Unit) {
     val sourceSet = findByName("nixTest") ?: return
     block(sourceSet)
diff --git a/buildSrc/src/main/kotlin/KtorBuildProperties.kt b/buildSrc/src/main/kotlin/KtorBuildProperties.kt
index 183950b200f..1a64cd5654c 100644
--- a/buildSrc/src/main/kotlin/KtorBuildProperties.kt
+++ b/buildSrc/src/main/kotlin/KtorBuildProperties.kt
@@ -7,10 +7,6 @@ import org.gradle.api.tasks.testing.*
 import org.gradle.jvm.toolchain.*
 import org.gradle.kotlin.dsl.*
 
-/*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 private val java_version: String = System.getProperty("java.version", "8.0.0")
 
 private val versionComponents = java_version
diff --git a/buildSrc/src/main/kotlin/TargetsConfig.kt b/buildSrc/src/main/kotlin/TargetsConfig.kt
index d82cb47dfe3..2293c5b70f8 100644
--- a/buildSrc/src/main/kotlin/TargetsConfig.kt
+++ b/buildSrc/src/main/kotlin/TargetsConfig.kt
@@ -15,10 +15,9 @@ import java.io.*
 private val Project.files: Array<File> get() = project.projectDir.listFiles() ?: emptyArray()
 val Project.hasCommon: Boolean get() = files.any { it.name == "common" }
 val Project.hasJvmAndPosix: Boolean get() = hasCommon || files.any { it.name == "jvmAndPosix" }
-val Project.hasJvmAndNix: Boolean get() = hasCommon || files.any { it.name == "jvmAndNix" }
 val Project.hasPosix: Boolean get() = hasCommon || hasJvmAndPosix || files.any { it.name == "posix" }
 val Project.hasDesktop: Boolean get() = hasPosix || files.any { it.name == "desktop" }
-val Project.hasNix: Boolean get() = hasPosix || hasJvmAndNix || files.any { it.name == "nix" }
+val Project.hasNix: Boolean get() = hasPosix || files.any { it.name == "nix" }
 val Project.hasLinux: Boolean get() = hasNix || files.any { it.name == "linux" }
 val Project.hasDarwin: Boolean get() = hasNix || files.any { it.name == "darwin" }
 val Project.hasAndroidNative: Boolean get() = hasPosix || files.any { it.name == "androidNative" }
@@ -26,7 +25,7 @@ val Project.hasWindows: Boolean get() = hasPosix || files.any { it.name == "wind
 val Project.hasJsAndWasmShared: Boolean get() = files.any { it.name == "jsAndWasmShared" }
 val Project.hasJs: Boolean get() = hasCommon || files.any { it.name == "js" } || hasJsAndWasmShared
 val Project.hasWasmJs: Boolean get() = hasCommon || files.any { it.name == "wasmJs" } || hasJsAndWasmShared
-val Project.hasJvm: Boolean get() = hasCommon || hasJvmAndNix || hasJvmAndPosix || files.any { it.name == "jvm" }
+val Project.hasJvm: Boolean get() = hasCommon || hasJvmAndPosix || files.any { it.name == "jvm" }
 
 val Project.hasExplicitNative: Boolean
     get() = hasNix || hasPosix || hasLinux || hasAndroidNative || hasDarwin || hasDesktop || hasWindows
@@ -110,11 +109,6 @@ private val hierarchyTemplate = KotlinHierarchyTemplate {
             group("posix")
         }
 
-        group("jvmAndNix") {
-            withJvm()
-            group("nix")
-        }
-
         group("desktop") {
             group("linux")
             group("windows")
diff --git a/buildSrc/src/main/kotlin/test/server/tests/Events.kt b/buildSrc/src/main/kotlin/test/server/tests/Events.kt
index 0447e187902..e7b89937261 100644
--- a/buildSrc/src/main/kotlin/test/server/tests/Events.kt
+++ b/buildSrc/src/main/kotlin/test/server/tests/Events.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package test.server.tests
 
 import io.ktor.http.*
diff --git a/buildSrc/src/main/kotlin/test/server/tests/WebSockets.kt b/buildSrc/src/main/kotlin/test/server/tests/WebSockets.kt
index dca951162c8..f2e5f6432ba 100644
--- a/buildSrc/src/main/kotlin/test/server/tests/WebSockets.kt
+++ b/buildSrc/src/main/kotlin/test/server/tests/WebSockets.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package test.server.tests
 
 import io.ktor.server.application.*
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 062d96b6f3b..8075c1b3d8f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -10,7 +10,7 @@ serialization = "1.7.3"
 binaryCompatibilityValidator = "0.16.3"
 dokka = "1.9.20"
 kover = "0.8.3"
-ktlint = "3.15.0"
+ktlint = "4.5.0"
 kotlinx-browser = "0.2"
 
 # Used for test server in buildSrc
diff --git a/ktor-client/ktor-client-apache5/jvm/src/io/ktor/client/engine/apache5/ApacheRequestProducer.kt b/ktor-client/ktor-client-apache5/jvm/src/io/ktor/client/engine/apache5/ApacheRequestProducer.kt
index 53df59059db..deceaf29bd9 100644
--- a/ktor-client/ktor-client-apache5/jvm/src/io/ktor/client/engine/apache5/ApacheRequestProducer.kt
+++ b/ktor-client/ktor-client-apache5/jvm/src/io/ktor/client/engine/apache5/ApacheRequestProducer.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.apache5
@@ -22,6 +22,7 @@ import java.nio.*
 import java.util.concurrent.*
 import kotlin.coroutines.*
 
+@Suppress("FunctionName")
 @OptIn(InternalAPI::class)
 internal fun ApacheRequestProducer(
     requestData: HttpRequestData,
diff --git a/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/engine/cio/ConnectionPipeline.kt b/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/engine/cio/ConnectionPipeline.kt
index 678fc8ec3b7..0d75c9bb267 100644
--- a/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/engine/cio/ConnectionPipeline.kt
+++ b/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/engine/cio/ConnectionPipeline.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.engine.cio
 
@@ -18,7 +18,7 @@ import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.channels.*
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.sync.*
-import kotlinx.io.EOFException
+import kotlinx.io.*
 import java.nio.channels.*
 import kotlin.coroutines.*
 import io.ktor.utils.io.ByteChannel as KtorByteChannel
@@ -61,9 +61,7 @@ internal actual class ConnectionPipeline actual constructor(
         } catch (_: CancellationException) {
         } finally {
             responseChannel.close()
-            /**
-             * Workaround bug with socket.close
-             */
+            // Workaround bug with socket.close
 //            outputChannel.close()
         }
     }
@@ -109,7 +107,9 @@ internal actual class ConnectionPipeline actual constructor(
                         val proxyChannel = KtorByteChannel()
                         skipTask = skipCancels(responseChannel, proxyChannel)
                         proxyChannel
-                    } else ByteReadChannel.Empty
+                    } else {
+                        ByteReadChannel.Empty
+                    }
 
                     callJob.invokeOnCompletion {
                         body.cancel()
diff --git a/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/plugins/websocket/cio/buildersCio.kt b/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/plugins/websocket/cio/buildersCio.kt
index 76aec2967b2..c3fd6d563ff 100644
--- a/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/plugins/websocket/cio/buildersCio.kt
+++ b/ktor-client/ktor-client-cio/jvm/src/io/ktor/client/plugins/websocket/cio/buildersCio.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.websocket.cio
@@ -37,7 +37,9 @@ public suspend fun HttpClient.webSocketRawSession(
                 session.outgoing.invokeOnClose {
                     if (it != null) {
                         sessionCompleted.completeExceptionally(it)
-                    } else sessionCompleted.complete(Unit)
+                    } else {
+                        sessionCompleted.complete(Unit)
+                    }
                 }
                 sessionCompleted.await()
             }
diff --git a/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt b/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
index a401f5703e7..33911cbe0e4 100644
--- a/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
+++ b/ktor-client/ktor-client-cio/jvm/test/io/ktor/client/engine/cio/ConnectErrorsTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.cio
@@ -18,7 +18,6 @@ import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
-import io.ktor.utils.io.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.debug.junit5.*
 import org.junit.jupiter.api.extension.*
@@ -102,7 +101,8 @@ class ConnectErrorsTest {
                             }
                             client.getInputStream().readBytes()
                         }
-                    } catch (_: Exception) { }
+                    } catch (_: Exception) {
+                    }
                 }
                 assertEquals("OK", client.get("http://localhost:${serverSocket.localPort}/").body())
                 thread.join()
diff --git a/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/CIOCommon.kt b/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/CIOCommon.kt
index ee1023e3bd6..4120918adfe 100644
--- a/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/CIOCommon.kt
+++ b/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/CIOCommon.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.engine.cio
 
diff --git a/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/ConnectionPipelineCommon.kt b/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/ConnectionPipelineCommon.kt
index b7bb982c485..f9eaa6e0413 100644
--- a/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/ConnectionPipelineCommon.kt
+++ b/ktor-client/ktor-client-cio/jvmAndPosix/src/io/ktor/client/engine/cio/ConnectionPipelineCommon.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.engine.cio
 
diff --git a/ktor-client/ktor-client-cio/posix/src/io/ktor/client/engine/cio/ConnectionPipelineNative.kt b/ktor-client/ktor-client-cio/posix/src/io/ktor/client/engine/cio/ConnectionPipelineNative.kt
index 1c9c9baf521..cccabfcd47c 100644
--- a/ktor-client/ktor-client-cio/posix/src/io/ktor/client/engine/cio/ConnectionPipelineNative.kt
+++ b/ktor-client/ktor-client-cio/posix/src/io/ktor/client/engine/cio/ConnectionPipelineNative.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.engine.cio
 
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/engine/ProxyConfig.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/engine/ProxyConfig.kt
index 46ddce25756..cd80d4b676c 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/engine/ProxyConfig.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/engine/ProxyConfig.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine
 
 import io.ktor.http.*
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpCallValidator.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpCallValidator.kt
index 168e9ec5edd..7d8a202a4e1 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpCallValidator.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpCallValidator.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins
 
@@ -155,7 +155,7 @@ internal object ReceiveError : ClientHook<suspend (HttpRequest, Throwable) -> Th
     }
 }
 
-private fun HttpRequest(builder: HttpRequestBuilder) = object : HttpRequest {
+private fun HttpRequest(builder: HttpRequestBuilder): HttpRequest = object : HttpRequest {
     override val call: HttpClientCall get() = error("Call is not initialized")
     override val method: HttpMethod = builder.method
     override val url: Url = builder.url.build()
@@ -169,6 +169,7 @@ private fun HttpRequest(builder: HttpRequestBuilder) = object : HttpRequest {
 /**
  * Install [HttpCallValidator] with [block] configuration.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.HttpResponseValidator(block: HttpCallValidatorConfig.() -> Unit) {
     install(HttpCallValidator, block)
 }
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpRequestRetry.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpRequestRetry.kt
index 6644d8b3f08..b091d58b53b 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpRequestRetry.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/HttpRequestRetry.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins
@@ -264,7 +264,9 @@ public val HttpRequestRetry: ClientPlugin<HttpRequestRetryConfig> = createClient
             val subRequestJob = subRequest.executionContext as CompletableJob
             if (cause == null) {
                 subRequestJob.complete()
-            } else subRequestJob.completeExceptionally(cause)
+            } else {
+                subRequestJob.completeExceptionally(cause)
+            }
         }
         return subRequest
     }
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/UserAgent.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/UserAgent.kt
index 6b096f9e6eb..98e30d59ff4 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/UserAgent.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/UserAgent.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins
 
@@ -35,6 +35,7 @@ public val UserAgent: ClientPlugin<UserAgentConfig> = createClientPlugin("UserAg
 /**
  * Installs the [UserAgent] plugin with a browser-like user agent.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.BrowserUserAgent() {
     install(UserAgent) {
         agent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) " +
@@ -45,6 +46,7 @@ public fun HttpClientConfig<*>.BrowserUserAgent() {
 /**
  * Installs the [UserAgent] plugin with a CURL user agent.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.CurlUserAgent() {
     install(UserAgent) {
         agent = "curl/7.61.0"
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/api/KtorCallContexts.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/api/KtorCallContexts.kt
index 4e0b58717db..46bf10e8307 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/api/KtorCallContexts.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/api/KtorCallContexts.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.client.plugins.api
 
 import io.ktor.client.*
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/cache/HttpCacheEntry.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/cache/HttpCacheEntry.kt
index 44e5ff38ddd..5122db87ca6 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/cache/HttpCacheEntry.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/cache/HttpCacheEntry.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins.cache
 
@@ -137,5 +137,7 @@ internal fun shouldValidate(
 }
 
 internal enum class ValidateStatus {
-    ShouldValidate, ShouldNotValidate, ShouldWarn
+    ShouldValidate,
+    ShouldNotValidate,
+    ShouldWarn,
 }
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/sse/builders.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/sse/builders.kt
index e8c4e8f82bc..df22ae7ee70 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/sse/builders.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/sse/builders.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins.sse
 
@@ -21,6 +21,7 @@ internal val showRetryEventsAttr = AttributeKey<Boolean>("SSEShowRetryEvents")
 /**
  * Installs the [SSE] plugin using the [config] as configuration.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.SSE(config: SSEConfig.() -> Unit) {
     install(SSE) {
         config()
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/WebSockets.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/WebSockets.kt
index 30cd810efa1..e413f4cd8aa 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/WebSockets.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/WebSockets.kt
@@ -174,8 +174,9 @@ public class WebSockets internal constructor(
                     return@intercept
                 }
                 if (status != HttpStatusCode.SwitchingProtocols) {
+                    @Suppress("ktlint:standard:max-line-length")
                     throw WebSocketException(
-                        "Handshake exception, expected status code ${HttpStatusCode.SwitchingProtocols.value} but was ${status.value}" // ktlint-disable max-line-length
+                        "Handshake exception, expected status code ${HttpStatusCode.SwitchingProtocols.value} but was ${status.value}"
                     )
                 }
                 if (session !is WebSocketSession) {
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/builders.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/builders.kt
index 6da82ec46e6..12337c04fe6 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/builders.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/plugins/websocket/builders.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins.websocket
 
@@ -14,6 +14,7 @@ import kotlinx.coroutines.*
 /**
  * Installs the [WebSockets] plugin using the [config] as configuration.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.WebSockets(config: WebSockets.Config.() -> Unit) {
     install(WebSockets) {
         config()
@@ -44,7 +45,9 @@ public suspend fun HttpClient.webSocketSession(
                 session.outgoing.invokeOnClose {
                     if (it != null) {
                         sessionCompleted.completeExceptionally(it)
-                    } else sessionCompleted.complete(Unit)
+                    } else {
+                        sessionCompleted.complete(Unit)
+                    }
                 }
                 sessionCompleted.await()
             }
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/HttpRequest.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/HttpRequest.kt
index a55c6b4395d..a735421314e 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/HttpRequest.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/HttpRequest.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.request
 
@@ -294,7 +294,7 @@ public operator fun HttpRequestBuilder.Companion.invoke(
 /**
  * Sets the [HttpRequestBuilder.url] from [urlString].
  */
-public fun HttpRequestBuilder.url(urlString: String) { // ktlint-disable filename
+public fun HttpRequestBuilder.url(urlString: String) {
     url.takeFrom(urlString)
 }
 
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/buildersWithUrl.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/buildersWithUrl.kt
index 2411af424bf..192619f308d 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/buildersWithUrl.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/buildersWithUrl.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.request
 
@@ -193,6 +193,6 @@ public suspend inline fun HttpClient.prepareDelete(
 /**
  * Sets the [HttpRequestBuilder.url] from [url].
  */
-public fun HttpRequestBuilder.url(url: Url): Unit { // ktlint-disable no-unit-return
+public fun HttpRequestBuilder.url(url: Url) {
     this.url.takeFrom(url)
 }
diff --git a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/utils.kt b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/utils.kt
index 501eb50911a..83a711a003a 100644
--- a/ktor-client/ktor-client-core/common/src/io/ktor/client/request/utils.kt
+++ b/ktor-client/ktor-client-core/common/src/io/ktor/client/request/utils.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.request
 
@@ -45,7 +45,7 @@ public fun HttpMessageBuilder.cookie(
     secure: Boolean = false,
     httpOnly: Boolean = false,
     extensions: Map<String, String?> = emptyMap()
-): Unit { // ktlint-disable no-unit-return
+) {
     val renderedCookie = Cookie(
         name = name,
         value = value,
diff --git a/ktor-client/ktor-client-core/common/test/CacheExpiresTest.kt b/ktor-client/ktor-client-core/common/test/CacheExpiresTest.kt
index f03be3daa73..e1210e2a295 100644
--- a/ktor-client/ktor-client-core/common/test/CacheExpiresTest.kt
+++ b/ktor-client/ktor-client-core/common/test/CacheExpiresTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.plugins.cache.tests
 
 import io.ktor.client.call.*
diff --git a/ktor-client/ktor-client-core/common/test/CookiesTest.kt b/ktor-client/ktor-client-core/common/test/CookiesTest.kt
index 166bab3b642..17ed065d704 100644
--- a/ktor-client/ktor-client-core/common/test/CookiesTest.kt
+++ b/ktor-client/ktor-client-core/common/test/CookiesTest.kt
@@ -1,13 +1,13 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.plugins.cookies.*
 import io.ktor.client.request.*
 import io.ktor.http.*
 import io.ktor.test.dispatcher.*
 import kotlin.test.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 class CookiesTest {
 
     @Test
diff --git a/ktor-client/ktor-client-core/common/test/DefaultRequestTest.kt b/ktor-client/ktor-client-core/common/test/DefaultRequestTest.kt
index 2a08ea2de28..2f7cc823bae 100644
--- a/ktor-client/ktor-client-core/common/test/DefaultRequestTest.kt
+++ b/ktor-client/ktor-client-core/common/test/DefaultRequestTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.*
 import io.ktor.client.engine.mock.*
 import io.ktor.client.plugins.*
@@ -8,10 +12,6 @@ import io.ktor.test.dispatcher.*
 import io.ktor.util.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class DefaultRequestTest {
 
     @Test
diff --git a/ktor-client/ktor-client-core/common/test/FormDslTest.kt b/ktor-client/ktor-client-core/common/test/FormDslTest.kt
index 76aa8330123..95f8d6f27ce 100644
--- a/ktor-client/ktor-client-core/common/test/FormDslTest.kt
+++ b/ktor-client/ktor-client-core/common/test/FormDslTest.kt
@@ -1,11 +1,11 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.request.forms.*
 import io.ktor.http.*
 import kotlin.test.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 class FormDslTest {
 
     @Test
diff --git a/ktor-client/ktor-client-core/common/test/HttpStatementTest.kt b/ktor-client/ktor-client-core/common/test/HttpStatementTest.kt
index 9cb7e387966..33754c945ab 100644
--- a/ktor-client/ktor-client-core/common/test/HttpStatementTest.kt
+++ b/ktor-client/ktor-client-core/common/test/HttpStatementTest.kt
@@ -1,12 +1,12 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.*
 import io.ktor.client.request.*
 import io.ktor.client.statement.*
 import kotlin.test.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 class HttpStatementTest {
 
     @Test
diff --git a/ktor-client/ktor-client-core/common/test/MultiPartFormDataContentTest.kt b/ktor-client/ktor-client-core/common/test/MultiPartFormDataContentTest.kt
index 31953e57577..cfded8308cf 100644
--- a/ktor-client/ktor-client-core/common/test/MultiPartFormDataContentTest.kt
+++ b/ktor-client/ktor-client-core/common/test/MultiPartFormDataContentTest.kt
@@ -1,16 +1,15 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.request.forms.*
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.charsets.*
-import io.ktor.utils.io.core.*
 import kotlinx.coroutines.*
 import kotlinx.io.*
 import kotlin.test.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 class MultiPartFormDataContentTest {
 
     @OptIn(InternalAPI::class)
diff --git a/ktor-client/ktor-client-core/common/test/TestEngine.kt b/ktor-client/ktor-client-core/common/test/TestEngine.kt
index 6f34a15ddb1..b7fa9614313 100644
--- a/ktor-client/ktor-client-core/common/test/TestEngine.kt
+++ b/ktor-client/ktor-client-core/common/test/TestEngine.kt
@@ -1,13 +1,13 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.engine.*
 import io.ktor.client.request.*
 import io.ktor.utils.io.*
 import kotlinx.coroutines.*
 import kotlin.coroutines.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 internal object TestEngine : HttpClientEngine {
     override val dispatcher: CoroutineDispatcher
         get() = Dispatchers.Default
diff --git a/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibDom.kt b/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibDom.kt
index da5f34d3bfa..6de06849fc5 100644
--- a/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibDom.kt
+++ b/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibDom.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.fetch
@@ -11,17 +11,17 @@ import kotlin.js.Promise
 public external fun fetch(input: String, init: RequestInit? = definedExternally): Promise<org.w3c.fetch.Response>
 
 public external interface Request : Body {
-    /* "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached" */
+    // "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached"
     public var cache: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "omit" | "same-origin" | "include" */
+    // "omit" | "same-origin" | "include"
     public var credentials: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "" | "audio" | "audioworklet" | "document" | "embed" | "font" | "image" | "manifest" | "object" | "paintworklet" | "report" | "script" | "sharedworker" | "style" | "track" | "video" | "worker" | "xslt" */
+    // "" | "audio" | "audioworklet" | "document" | "embed" | "font" | "image" | "manifest" | "object" | "paintworklet" | "report" | "script" | "sharedworker" | "style" | "track" | "video" | "worker" | "xslt"
     public var destination: dynamic
         get() = definedExternally
         set(value) = definedExternally
@@ -32,18 +32,18 @@ public external interface Request : Body {
     public var keepalive: Boolean
     public var method: String
 
-    /* "navigate" | "same-origin" | "no-cors" | "cors" */
+    // "navigate" | "same-origin" | "no-cors" | "cors"
     public var mode: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "follow" | "error" | "manual" */
+    // "follow" | "error" | "manual"
     public var redirect: dynamic
         get() = definedExternally
         set(value) = definedExternally
     public var referrer: String
 
-    /* "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url" */
+    // "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url"
     public var referrerPolicy: dynamic
         get() = definedExternally
         set(value) = definedExternally
@@ -63,7 +63,7 @@ public external interface Response : Body {
     public var statusText: String
     public var trailer: Promise<Headers>
 
-    /* "basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect" */
+    // "basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect"
     public var type: dynamic
         get() = definedExternally
         set(value) = definedExternally
@@ -89,14 +89,14 @@ public external interface FormData {
     public fun append(name: String, value: Blob, fileName: String? = definedExternally)
     public fun delete(name: String)
 
-    /* File | String */
-    public fun get(name: String): dynamic
-    public fun getAll(name: String): Array<dynamic /* File | String */>
+    public fun get(name: String): dynamic // File | String
+    public fun getAll(name: String): Array<dynamic> // File | String
     public fun has(name: String): Boolean
     public fun set(name: String, value: String, fileName: String? = definedExternally)
     public fun set(name: String, value: Blob, fileName: String? = definedExternally)
     public fun forEach(
-        callbackfn: (value: dynamic /* File | String */, key: String, parent: FormData) -> Unit,
+        // value: File | String
+        callbackfn: (value: dynamic, key: String, parent: FormData) -> Unit,
         thisArg: Any? = definedExternally
     )
 }
@@ -121,7 +121,7 @@ public external interface ReadableStream<R> {
 
     public fun pipeTo(dest: WritableStream<R>, options: PipeOptions? = definedExternally): Promise<Unit>
 
-    /* JsTuple<ReadableStream<R>, ReadableStream<R>> */
+    // JsTuple<ReadableStream<R>, ReadableStream<R>>
     public fun tee(): dynamic
 }
 
@@ -190,22 +190,22 @@ public external interface Headers {
 }
 
 public external interface RequestInit {
-    /* Blob | ArrayBufferView | ArrayBuffer | FormData | URLSearchParams | ReadableStream<Uint8Array> | String */
+    // Blob | ArrayBufferView | ArrayBuffer | FormData | URLSearchParams | ReadableStream<Uint8Array> | String
     public var body: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached" */
+    // "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached"
     public var cache: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "omit" | "same-origin" | "include" */
+    // "omit" | "same-origin" | "include"
     public var credentials: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* Headers | Array<Array<String>> | Record<String, String> */
+    // Headers | Array<Array<String>> | Record<String, String>
     public var headers: dynamic
         get() = definedExternally
         set(value) = definedExternally
@@ -222,12 +222,12 @@ public external interface RequestInit {
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "navigate" | "same-origin" | "no-cors" | "cors" */
+    // "navigate" | "same-origin" | "no-cors" | "cors"
     public var mode: dynamic
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "follow" | "error" | "manual" */
+    // "follow" | "error" | "manual"
     public var redirect: dynamic
         get() = definedExternally
         set(value) = definedExternally
@@ -235,7 +235,7 @@ public external interface RequestInit {
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url" */
+    // "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url"
     public var referrerPolicy: dynamic
         get() = definedExternally
         set(value) = definedExternally
diff --git a/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibEs5.kt b/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibEs5.kt
index bb2d31bd329..625917e7d63 100644
--- a/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibEs5.kt
+++ b/ktor-client/ktor-client-core/js/src/io/ktor/client/fetch/LibEs5.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.fetch
@@ -30,7 +30,7 @@ public external interface Uint8Array {
     public var byteLength: Number
     public var byteOffset: Number
 
-    public fun copyWithin(target: Number, start: Number, end: Number? = definedExternally): Uint8Array /* this */
+    public fun copyWithin(target: Number, start: Number, end: Number? = definedExternally): Uint8Array // this
     public fun every(
         callbackfn: (value: Number, index: Number, array: Uint8Array) -> Any,
         thisArg: Any? = definedExternally
@@ -40,7 +40,7 @@ public external interface Uint8Array {
         value: Number,
         start: Number? = definedExternally,
         end: Number? = definedExternally
-    ): Uint8Array /* this */
+    ): Uint8Array // this
 
     public fun filter(
         callbackfn: (value: Number, index: Number, array: Uint8Array) -> Any,
@@ -101,7 +101,7 @@ public external interface Uint8Array {
         thisArg: Any? = definedExternally
     ): Boolean
 
-    public fun sort(compareFn: ((a: Number, b: Number) -> Number)? = definedExternally): Uint8Array /* this */
+    public fun sort(compareFn: ((a: Number, b: Number) -> Number)? = definedExternally): Uint8Array // this
     public fun subarray(begin: Number? = definedExternally, end: Number? = definedExternally): Uint8Array
     public fun toLocaleString(): String
     override fun toString(): String
diff --git a/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/ProxyConfigJs.kt b/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/ProxyConfigJs.kt
index 7443308f410..73008b88c00 100644
--- a/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/ProxyConfigJs.kt
+++ b/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/ProxyConfigJs.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine
 
 import io.ktor.http.*
diff --git a/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/js/Js.kt b/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/js/Js.kt
index a579421500b..76d19cd4e10 100644
--- a/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/js/Js.kt
+++ b/ktor-client/ktor-client-core/jsAndWasmShared/src/io/ktor/client/engine/js/Js.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.js
@@ -28,5 +28,6 @@ public expect open class JsClientEngineConfig : HttpClientEngineConfig
 /**
  * Creates a [Js] client engine.
  */
+@Suppress("FunctionName")
 @JsName("JsClient")
 public fun JsClient(): HttpClientEngineFactory<JsClientEngineConfig> = Js
diff --git a/ktor-client/ktor-client-core/jvm/src/io/ktor/client/engine/ProxyConfigJvm.kt b/ktor-client/ktor-client-core/jvm/src/io/ktor/client/engine/ProxyConfigJvm.kt
index 7d580b9afc3..417f1f0a6b5 100644
--- a/ktor-client/ktor-client-core/jvm/src/io/ktor/client/engine/ProxyConfigJvm.kt
+++ b/ktor-client/ktor-client-core/jvm/src/io/ktor/client/engine/ProxyConfigJvm.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine
 
 import io.ktor.http.*
diff --git a/ktor-client/ktor-client-core/jvm/src/io/ktor/client/plugins/cache/storage/FileCacheStorage.kt b/ktor-client/ktor-client-core/jvm/src/io/ktor/client/plugins/cache/storage/FileCacheStorage.kt
index 40887edfb05..ffb13916159 100644
--- a/ktor-client/ktor-client-core/jvm/src/io/ktor/client/plugins/cache/storage/FileCacheStorage.kt
+++ b/ktor-client/ktor-client-core/jvm/src/io/ktor/client/plugins/cache/storage/FileCacheStorage.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.cache.storage
@@ -22,6 +22,7 @@ import java.security.*
  * @param directory directory to store cache data.
  * @param dispatcher dispatcher to use for file operations.
  */
+@Suppress("FunctionName")
 public fun FileStorage(
     directory: File,
     dispatcher: CoroutineDispatcher = Dispatchers.IO
diff --git a/ktor-client/ktor-client-core/posix/src/io/ktor/client/engine/ProxyConfigNative.kt b/ktor-client/ktor-client-core/posix/src/io/ktor/client/engine/ProxyConfigNative.kt
index 3e321a78887..92f67fc9783 100644
--- a/ktor-client/ktor-client-core/posix/src/io/ktor/client/engine/ProxyConfigNative.kt
+++ b/ktor-client/ktor-client-core/posix/src/io/ktor/client/engine/ProxyConfigNative.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine
 
 import io.ktor.http.*
diff --git a/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibDom.kt b/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibDom.kt
index f54fdf00e3d..1f88e909ade 100644
--- a/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibDom.kt
+++ b/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibDom.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.fetch
@@ -12,17 +12,17 @@ import kotlin.js.Promise
 public external fun fetch(input: String, init: RequestInit? = definedExternally): Promise<org.w3c.fetch.Response>
 
 public external interface Request : Body {
-    /* "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached" */
+    // "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached"
     public var cache: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "omit" | "same-origin" | "include" */
+    // "omit" | "same-origin" | "include"
     public var credentials: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "" | "audio" | "audioworklet" | "document" | "embed" | "font" | "image" | "manifest" | "object" | "paintworklet" | "report" | "script" | "sharedworker" | "style" | "track" | "video" | "worker" | "xslt" */
+    // "" | "audio" | "audioworklet" | "document" | "embed" | "font" | "image" | "manifest" | "object" | "paintworklet" | "report" | "script" | "sharedworker" | "style" | "track" | "video" | "worker" | "xslt"
     public var destination: JsAny?
         get() = definedExternally
         set(value) = definedExternally
@@ -33,18 +33,18 @@ public external interface Request : Body {
     public var keepalive: Boolean
     public var method: String
 
-    /* "navigate" | "same-origin" | "no-cors" | "cors" */
+    // "navigate" | "same-origin" | "no-cors" | "cors"
     public var mode: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "follow" | "error" | "manual" */
+    // "follow" | "error" | "manual"
     public var redirect: JsAny?
         get() = definedExternally
         set(value) = definedExternally
     public var referrer: String
 
-    /* "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url" */
+    // "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url"
     public var referrerPolicy: JsAny?
         get() = definedExternally
         set(value) = definedExternally
@@ -64,7 +64,7 @@ public external interface Response : Body {
     public var statusText: String
     public var trailer: Promise<Headers>
 
-    /* "basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect" */
+    // "basic" | "cors" | "default" | "error" | "opaque" | "opaqueredirect"
     public var type: JsAny?
         get() = definedExternally
         set(value) = definedExternally
@@ -90,14 +90,14 @@ public external interface FormData : JsAny {
     public fun append(name: String, value: Blob, fileName: String? = definedExternally)
     public fun delete(name: String)
 
-    /* File | String */
-    public fun get(name: String): JsAny?
-    public fun getAll(name: String): ArrayLike<JsAny?> /* File | String */
+    public fun get(name: String): JsAny? // File | String
+    public fun getAll(name: String): ArrayLike<JsAny?> // File | String
     public fun has(name: String): Boolean
     public fun set(name: String, value: String, fileName: String? = definedExternally)
     public fun set(name: String, value: Blob, fileName: String? = definedExternally)
     public fun forEach(
-        callbackfn: (value: JsAny? /* File | String */, key: String, parent: FormData) -> Unit,
+        // value: File | String
+        callbackfn: (value: JsAny?, key: String, parent: FormData) -> Unit,
         thisArg: JsAny? = definedExternally
     )
 }
@@ -122,7 +122,7 @@ public external interface ReadableStream<R : JsAny?> : JsAny {
 
     public fun pipeTo(dest: WritableStream<R>, options: PipeOptions? = definedExternally): Promise<JsAny?>
 
-    /* JsTuple<ReadableStream<R>, ReadableStream<R>> */
+    // JsTuple<ReadableStream<R>, ReadableStream<R>>
     public fun tee(): JsAny?
 }
 
@@ -191,22 +191,22 @@ public external interface Headers : JsAny {
 }
 
 public external interface RequestInit : JsAny {
-    /* Blob | ArrayBufferView | ArrayBuffer | FormData | URLSearchParams | ReadableStream<Uint8Array> | String */
+    // Blob | ArrayBufferView | ArrayBuffer | FormData | URLSearchParams | ReadableStream<Uint8Array> | String
     public var body: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached" */
+    // "default" | "no-store" | "reload" | "no-cache" | "force-cache" | "only-if-cached"
     public var cache: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "omit" | "same-origin" | "include" */
+    // "omit" | "same-origin" | "include"
     public var credentials: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* Headers | Array<Array<String>> | Record<String, String> */
+    // Headers | Array<Array<String>> | Record<String, String>
     public var headers: JsAny?
         get() = definedExternally
         set(value) = definedExternally
@@ -223,12 +223,12 @@ public external interface RequestInit : JsAny {
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "navigate" | "same-origin" | "no-cors" | "cors" */
+    // "navigate" | "same-origin" | "no-cors" | "cors"
     public var mode: JsAny?
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "follow" | "error" | "manual" */
+    // "follow" | "error" | "manual"
     public var redirect: JsAny?
         get() = definedExternally
         set(value) = definedExternally
@@ -236,7 +236,7 @@ public external interface RequestInit : JsAny {
         get() = definedExternally
         set(value) = definedExternally
 
-    /* "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url" */
+    // "" | "no-referrer" | "no-referrer-when-downgrade" | "same-origin" | "origin" | "strict-origin" | "origin-when-cross-origin" | "strict-origin-when-cross-origin" | "unsafe-url"
     public var referrerPolicy: JsAny?
         get() = definedExternally
         set(value) = definedExternally
diff --git a/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibEs5.kt b/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibEs5.kt
index f54464daf2b..086cc79868b 100644
--- a/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibEs5.kt
+++ b/ktor-client/ktor-client-core/wasmJs/src/io/ktor/client/fetch/LibEs5.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.fetch
@@ -34,7 +34,7 @@ public external interface Uint8Array : JsAny {
         target: JsNumber,
         start: JsNumber,
         end: JsNumber? = definedExternally
-    ): Uint8Array /* this */
+    ): Uint8Array // this
 
     public fun every(
         callbackfn: (value: JsNumber, index: JsNumber, array: Uint8Array) -> JsAny,
@@ -45,7 +45,7 @@ public external interface Uint8Array : JsAny {
         value: JsNumber,
         start: JsNumber? = definedExternally,
         end: JsNumber? = definedExternally
-    ): Uint8Array /* this */
+    ): Uint8Array // this
 
     public fun filter(
         callbackfn: (value: JsNumber, index: JsNumber, array: Uint8Array) -> JsAny,
@@ -147,7 +147,7 @@ public external interface Uint8Array : JsAny {
         thisArg: JsAny? = definedExternally
     ): Boolean
 
-    public fun sort(compareFn: ((a: JsNumber, b: JsNumber) -> JsNumber)? = definedExternally): Uint8Array /* this */
+    public fun sort(compareFn: ((a: JsNumber, b: JsNumber) -> JsNumber)? = definedExternally): Uint8Array // this
 
     public fun subarray(begin: JsNumber? = definedExternally, end: JsNumber? = definedExternally): Uint8Array
 
diff --git a/ktor-client/ktor-client-curl/desktop/src/io/ktor/client/engine/curl/internal/CurlAdapters.kt b/ktor-client/ktor-client-curl/desktop/src/io/ktor/client/engine/curl/internal/CurlAdapters.kt
index ca25667c919..6cfb7418c49 100644
--- a/ktor-client/ktor-client-curl/desktop/src/io/ktor/client/engine/curl/internal/CurlAdapters.kt
+++ b/ktor-client/ktor-client-curl/desktop/src/io/ktor/client/engine/curl/internal/CurlAdapters.kt
@@ -1,11 +1,10 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.curl.internal
 
 import io.ktor.client.engine.*
-import io.ktor.client.engine.curl.*
 import io.ktor.client.request.*
 import io.ktor.http.*
 import io.ktor.utils.io.*
@@ -82,6 +81,6 @@ internal fun UInt.fromCurl(): HttpProtocolVersion = when (this) {
     CURL_HTTP_VERSION_1_0 -> HttpProtocolVersion.HTTP_1_0
     CURL_HTTP_VERSION_1_1 -> HttpProtocolVersion.HTTP_1_1
     CURL_HTTP_VERSION_2_0 -> HttpProtocolVersion.HTTP_2_0
-    /* old curl fallback */
+    // old curl fallback
     else -> HttpProtocolVersion.HTTP_1_1
 }
diff --git a/ktor-client/ktor-client-darwin-legacy/darwin/test/DarwinLegacyEngineTest.kt b/ktor-client/ktor-client-darwin-legacy/darwin/test/DarwinLegacyEngineTest.kt
index 5ee463c6365..fd3d68e610b 100644
--- a/ktor-client/ktor-client-darwin-legacy/darwin/test/DarwinLegacyEngineTest.kt
+++ b/ktor-client/ktor-client-darwin-legacy/darwin/test/DarwinLegacyEngineTest.kt
@@ -1,3 +1,6 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 import io.ktor.client.*
 import io.ktor.client.engine.darwin.*
@@ -12,10 +15,6 @@ import platform.Foundation.NSHTTPCookieStorage.Companion.sharedHTTPCookieStorage
 import kotlin.coroutines.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class DarwinLegacyEngineTest {
 
     val testCoroutineContext: CoroutineContext = Dispatchers.Default
diff --git a/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinSession.kt b/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinSession.kt
index d599c78919f..25386fcca24 100644
--- a/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinSession.kt
+++ b/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinSession.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine.darwin.internal
 
 import io.ktor.client.engine.darwin.*
diff --git a/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinWebsocketSession.kt b/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinWebsocketSession.kt
index 00de3dc5093..5880c402c8d 100644
--- a/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinWebsocketSession.kt
+++ b/ktor-client/ktor-client-darwin/darwin/src/io/ktor/client/engine/darwin/internal/DarwinWebsocketSession.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.darwin.internal
@@ -100,17 +100,21 @@ internal class DarwinWebsocketSession(
                         ) { error ->
                             if (error == null) {
                                 continuation.resume(Unit)
-                            } else continuation.resumeWithException(DarwinHttpRequestException(error))
+                            } else {
+                                continuation.resumeWithException(DarwinHttpRequestException(error))
+                            }
                         }
                     }
                 }
 
                 FrameType.BINARY -> {
-                    suspendCancellableCoroutine<Unit> { continuation ->
+                    suspendCancellableCoroutine { continuation ->
                         task.sendMessage(NSURLSessionWebSocketMessage(frame.data.toNSData())) { error ->
                             if (error == null) {
                                 continuation.resume(Unit)
-                            } else continuation.resumeWithException(DarwinHttpRequestException(error))
+                            } else {
+                                continuation.resumeWithException(DarwinHttpRequestException(error))
+                            }
                         }
                     }
                 }
diff --git a/ktor-server/ktor-server-tests/jvmAndNix/test/io/ktor/tests/server/plugins/CORSTest.kt b/ktor-client/ktor-client-js/js/.gitkeep
similarity index 100%
rename from ktor-server/ktor-server-tests/jvmAndNix/test/io/ktor/tests/server/plugins/CORSTest.kt
rename to ktor-client/ktor-client-js/js/.gitkeep
diff --git a/ktor-client/ktor-client-js/js/src/Js.kt b/ktor-client/ktor-client-js/js/src/Js.kt
deleted file mode 100644
index 9d9ed90fbfa..00000000000
--- a/ktor-client/ktor-client-js/js/src/Js.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-/*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
diff --git a/ktor-utils/jsAndWasmShared/test/io.ktor.util/KtorSimpleLoggerTest.kt b/ktor-client/ktor-client-js/wasmJs/.gitkeep
similarity index 100%
rename from ktor-utils/jsAndWasmShared/test/io.ktor.util/KtorSimpleLoggerTest.kt
rename to ktor-client/ktor-client-js/wasmJs/.gitkeep
diff --git a/ktor-client/ktor-client-js/wasmJs/src/Wasm.kt b/ktor-client/ktor-client-js/wasmJs/src/Wasm.kt
deleted file mode 100644
index e88e11fb9d9..00000000000
--- a/ktor-client/ktor-client-js/wasmJs/src/Wasm.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-/*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
diff --git a/ktor-client/ktor-client-mock/common/src/io/ktor/client/engine/mock/MockEngine.kt b/ktor-client/ktor-client-mock/common/src/io/ktor/client/engine/mock/MockEngine.kt
index 17750020def..081525483b3 100644
--- a/ktor-client/ktor-client-mock/common/src/io/ktor/client/engine/mock/MockEngine.kt
+++ b/ktor-client/ktor-client-mock/common/src/io/ktor/client/engine/mock/MockEngine.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.mock
@@ -25,7 +25,7 @@ public class MockEngine(override val config: MockEngineConfig) : HttpClientEngin
     private val mutex = SynchronizedObject()
     private val contextState: CompletableJob = Job()
 
-    private val _requestsHistory: MutableList<HttpRequestData> = mutableListOf()
+    private val _requestHistory: MutableList<HttpRequestData> = mutableListOf()
     private val _responseHistory: MutableList<HttpResponseData> = mutableListOf()
 
     private var invocationCount: Int = 0
@@ -39,7 +39,7 @@ public class MockEngine(override val config: MockEngineConfig) : HttpClientEngin
     /**
      * History of executed requests.
      */
-    public val requestHistory: List<HttpRequestData> get() = _requestsHistory
+    public val requestHistory: List<HttpRequestData> get() = _requestHistory
 
     /**
      * History of sent responses.
@@ -67,7 +67,7 @@ public class MockEngine(override val config: MockEngineConfig) : HttpClientEngin
         }
 
         synchronized(mutex) {
-            _requestsHistory.add(data)
+            _requestHistory.add(data)
             _responseHistory.add(response)
         }
 
diff --git a/ktor-client/ktor-client-mock/common/test/MockUtilsTest.kt b/ktor-client/ktor-client-mock/common/test/MockUtilsTest.kt
index 0f567d5b897..5e12702c587 100644
--- a/ktor-client/ktor-client-mock/common/test/MockUtilsTest.kt
+++ b/ktor-client/ktor-client-mock/common/test/MockUtilsTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.engine.mock
 
 import io.ktor.http.content.*
@@ -5,10 +9,6 @@ import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class MockUtilsTest {
 
     @Test
diff --git a/ktor-client/ktor-client-okhttp/jvm/src/io/ktor/client/engine/okhttp/OkHttpSSESession.kt b/ktor-client/ktor-client-okhttp/jvm/src/io/ktor/client/engine/okhttp/OkHttpSSESession.kt
index f62eab234ee..eddd4858589 100644
--- a/ktor-client/ktor-client-okhttp/jvm/src/io/ktor/client/engine/okhttp/OkHttpSSESession.kt
+++ b/ktor-client/ktor-client-okhttp/jvm/src/io/ktor/client/engine/okhttp/OkHttpSSESession.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.engine.okhttp
@@ -70,8 +70,9 @@ internal class OkHttpSSESession(
 
             response != null && response.headers[HttpHeaders.ContentType]
                 ?.let { ContentType.parse(it) }?.withoutParameters() != ContentType.Text.EventStream ->
+                @Suppress("ktlint:standard:max-line-length")
                 SSEClientException(
-                    message = "Content type must be ${ContentType.Text.EventStream} but was ${response.headers[HttpHeaders.ContentType]}" // ktlint-disable max-line-length
+                    message = "Content type must be ${ContentType.Text.EventStream} but was ${response.headers[HttpHeaders.ContentType]}"
                 )
 
             else -> SSEClientException(message = "Unexpected error occurred in OkHttpSSESession")
diff --git a/ktor-client/ktor-client-plugins/ktor-client-auth/build.gradle.kts b/ktor-client/ktor-client-plugins/ktor-client-auth/build.gradle.kts
index 84423b6effb..3e75aed1ce7 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-auth/build.gradle.kts
+++ b/ktor-client/ktor-client-plugins/ktor-client-auth/build.gradle.kts
@@ -1,8 +1,8 @@
-import test.server.*
-
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
+import test.server.*
 
 description = "Ktor client Auth support"
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/Auth.kt b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/Auth.kt
index 1fd57fa6d25..1bdc315d6f1 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/Auth.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/Auth.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.auth
@@ -156,6 +156,7 @@ public val Auth: ClientPlugin<AuthConfig> = createClientPlugin("Auth", ::AuthCon
 /**
  * Install [Auth] plugin.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.Auth(block: AuthConfig.() -> Unit) {
     install(Auth, block)
 }
diff --git a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BasicAuthProvider.kt b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BasicAuthProvider.kt
index 83b96974702..1e62ef8e70c 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BasicAuthProvider.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BasicAuthProvider.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.auth.providers
@@ -20,7 +20,7 @@ import io.ktor.utils.io.core.*
 @KtorDsl
 public fun AuthConfig.basic(block: BasicAuthConfig.() -> Unit) {
     with(BasicAuthConfig().apply(block)) {
-        this@basic.providers.add(BasicAuthProvider(_credentials, realm, _sendWithoutRequest))
+        this@basic.providers.add(BasicAuthProvider(credentials, realm, _sendWithoutRequest))
     }
 }
 
@@ -52,11 +52,11 @@ public class BasicAuthConfig {
      */
     public var realm: String? = null
 
-    @Suppress("DEPRECATION_ERROR")
+    @Suppress("DEPRECATION_ERROR", "PropertyName")
     internal var _sendWithoutRequest: (HttpRequestBuilder) -> Boolean = { sendWithoutRequest }
 
     @Suppress("DEPRECATION_ERROR")
-    internal var _credentials: suspend () -> BasicAuthCredentials? = {
+    internal var credentials: suspend () -> BasicAuthCredentials? = {
         BasicAuthCredentials(username = username, password = password)
     }
 
@@ -71,7 +71,7 @@ public class BasicAuthConfig {
      * Allows you to specify authentication credentials.
      */
     public fun credentials(block: suspend () -> BasicAuthCredentials?) {
-        _credentials = block
+        credentials = block
     }
 }
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BearerAuthProvider.kt b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BearerAuthProvider.kt
index 33fb1c2c056..879cb47929d 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BearerAuthProvider.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/BearerAuthProvider.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2020 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.auth.providers
@@ -17,7 +17,7 @@ import io.ktor.utils.io.*
  */
 public fun AuthConfig.bearer(block: BearerAuthConfig.() -> Unit) {
     with(BearerAuthConfig().apply(block)) {
-        this@bearer.providers.add(BearerAuthProvider(_refreshTokens, _loadTokens, _sendWithoutRequest, realm))
+        this@bearer.providers.add(BearerAuthProvider(refreshTokens, loadTokens, sendWithoutRequest, realm))
     }
 }
 
@@ -48,9 +48,9 @@ public class RefreshTokensParams(
  */
 @KtorDsl
 public class BearerAuthConfig {
-    internal var _refreshTokens: suspend RefreshTokensParams.() -> BearerTokens? = { null }
-    internal var _loadTokens: suspend () -> BearerTokens? = { null }
-    internal var _sendWithoutRequest: (HttpRequestBuilder) -> Boolean = { true }
+    internal var refreshTokens: suspend RefreshTokensParams.() -> BearerTokens? = { null }
+    internal var loadTokens: suspend () -> BearerTokens? = { null }
+    internal var sendWithoutRequest: (HttpRequestBuilder) -> Boolean = { true }
 
     public var realm: String? = null
 
@@ -58,7 +58,7 @@ public class BearerAuthConfig {
      * Configures a callback that refreshes a token when the 401 status code is received.
      */
     public fun refreshTokens(block: suspend RefreshTokensParams.() -> BearerTokens?) {
-        _refreshTokens = block
+        refreshTokens = block
     }
 
     /**
@@ -66,14 +66,14 @@ public class BearerAuthConfig {
      * Note: Using the same client instance here to make a request will result in a deadlock.
      */
     public fun loadTokens(block: suspend () -> BearerTokens?) {
-        _loadTokens = block
+        loadTokens = block
     }
 
     /**
      * Sends credentials without waiting for [HttpStatusCode.Unauthorized].
      */
     public fun sendWithoutRequest(block: (HttpRequestBuilder) -> Boolean) {
-        _sendWithoutRequest = block
+        sendWithoutRequest = block
     }
 }
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/DigestAuthProvider.kt b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/DigestAuthProvider.kt
index 1d57c85e752..6e1e5001dc3 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/DigestAuthProvider.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-auth/common/src/io/ktor/client/plugins/auth/providers/DigestAuthProvider.kt
@@ -9,7 +9,6 @@ import io.ktor.client.request.*
 import io.ktor.client.statement.*
 import io.ktor.http.*
 import io.ktor.http.auth.*
-import io.ktor.http.auth.HeaderValueEncoding
 import io.ktor.util.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.charsets.*
@@ -22,7 +21,7 @@ import kotlinx.atomicfu.*
 public fun AuthConfig.digest(block: DigestAuthConfig.() -> Unit) {
     val config = DigestAuthConfig().apply(block)
     with(config) {
-        this@digest.providers += DigestAuthProvider(_credentials, realm, algorithmName)
+        this@digest.providers += DigestAuthProvider(credentials, realm, algorithmName)
     }
 }
 
@@ -52,7 +51,7 @@ public class DigestAuthConfig {
     public var realm: String? = null
 
     @Suppress("DEPRECATION_ERROR")
-    internal var _credentials: suspend () -> DigestAuthCredentials? = {
+    internal var credentials: suspend () -> DigestAuthCredentials? = {
         DigestAuthCredentials(username = username, password = password)
     }
 
@@ -60,7 +59,7 @@ public class DigestAuthConfig {
      * Allows you to specify authentication credentials.
      */
     public fun credentials(block: suspend () -> DigestAuthCredentials?) {
-        _credentials = block
+        credentials = block
     }
 }
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/build.gradle.kts b/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/build.gradle.kts
index a00b3189ace..45bd658f8b1 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/build.gradle.kts
+++ b/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/build.gradle.kts
@@ -2,12 +2,6 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-import org.jetbrains.kotlin.gradle.targets.jvm.tasks.*
-
-/*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 description = "Common tests for client content negotiation"
 
 plugins {
diff --git a/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/jvm/src/io/ktor/client/plugins/contentnegotiation/tests/AbstractClientContentNegotiationTest.kt b/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/jvm/src/io/ktor/client/plugins/contentnegotiation/tests/AbstractClientContentNegotiationTest.kt
index 2d5e39426b7..06f031d0139 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/jvm/src/io/ktor/client/plugins/contentnegotiation/tests/AbstractClientContentNegotiationTest.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-content-negotiation/ktor-client-content-negotiation-tests/jvm/src/io/ktor/client/plugins/contentnegotiation/tests/AbstractClientContentNegotiationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.client.plugins.contentnegotiation.tests
 
 import com.fasterxml.jackson.annotation.*
@@ -95,7 +96,8 @@ abstract class AbstractClientContentNegotiationTest : TestWithKtor() {
                 Response.serializer(ListSerializer(User.serializer()))
             )
         }
-        get("/users-x") { // route for testing custom content type, namely "application/x-${contentSubtype}"
+        // route for testing custom content type, namely "application/x-${contentSubtype}"
+        get("/users-x") {
             call.respond(
                 """{"ok":true,"result":[{"name":"x","age":10},{"name":"y","age":45}]}""",
                 customContentType,
diff --git a/ktor-client/ktor-client-plugins/ktor-client-encoding/common/src/ContentEncoding.kt b/ktor-client/ktor-client-plugins/ktor-client-encoding/common/src/ContentEncoding.kt
index 1b26092c504..ca876d6ec59 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-encoding/common/src/ContentEncoding.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-encoding/common/src/ContentEncoding.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.plugins.compression
 
@@ -26,7 +26,9 @@ private val LOGGER = KtorSimpleLogger("io.ktor.client.plugins.compression.Conten
 public class ContentEncodingConfig {
 
     public enum class Mode(internal val request: Boolean, internal val response: Boolean) {
-        CompressRequest(true, false), DecompressResponse(false, true), All(true, true)
+        CompressRequest(true, false),
+        DecompressResponse(false, true),
+        All(true, true),
     }
 
     internal val encoders: MutableMap<String, ContentEncoder> = CaseInsensitiveMap()
@@ -213,6 +215,7 @@ internal object ReceiveStateHook : ClientHook<suspend (HttpResponse) -> HttpResp
  *
  * @param block: a [ContentEncoding] configuration.
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.ContentEncoding(
     mode: ContentEncodingConfig.Mode = ContentEncodingConfig.Mode.DecompressResponse,
     block: ContentEncodingConfig.() -> Unit = {
diff --git a/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonPlugin.kt b/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonPlugin.kt
index bacc893efe3..0830659513c 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonPlugin.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonPlugin.kt
@@ -232,6 +232,7 @@ public class JsonPlugin internal constructor(
 /**
  * Install [JsonPlugin].
  */
+@Suppress("FunctionName")
 @Deprecated(
     "Please use ContentNegotiation plugin: https://ktor.io/docs/migration-to-20x.html#serialization-client",
     level = DeprecationLevel.ERROR
diff --git a/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonSerializer.kt b/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonSerializer.kt
index 223cf7861f2..4ed1badd3f8 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonSerializer.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-json/common/src/io/ktor/client/plugins/json/JsonSerializer.kt
@@ -12,8 +12,9 @@ import io.ktor.utils.io.core.*
 /**
  * Client json serializer.
  */
+@Suppress("ktlint:standard:max-line-length")
 @Deprecated(
-    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client", // ktlint-disable max-line-length
+    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client",
     level = DeprecationLevel.ERROR
 )
 public interface JsonSerializer {
diff --git a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-gson/jvm/src/io/ktor/client/plugins/gson/GsonSerializer.kt b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-gson/jvm/src/io/ktor/client/plugins/gson/GsonSerializer.kt
index 516ab931b70..a507a765a92 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-gson/jvm/src/io/ktor/client/plugins/gson/GsonSerializer.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-gson/jvm/src/io/ktor/client/plugins/gson/GsonSerializer.kt
@@ -15,8 +15,9 @@ import io.ktor.utils.io.core.*
 /**
  * [JsonSerializer] using [Gson] as backend.
  */
+@Suppress("ktlint:standard:max-line-length")
 @Deprecated(
-    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client", // ktlint-disable max-line-length
+    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client",
     level = DeprecationLevel.ERROR
 )
 public class GsonSerializer(block: GsonBuilder.() -> Unit = {}) : JsonSerializer {
diff --git a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-jackson/jvm/src/io/ktor/client/plugins/jackson/JacksonSerializer.kt b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-jackson/jvm/src/io/ktor/client/plugins/jackson/JacksonSerializer.kt
index c8007793877..33942958e80 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-jackson/jvm/src/io/ktor/client/plugins/jackson/JacksonSerializer.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-jackson/jvm/src/io/ktor/client/plugins/jackson/JacksonSerializer.kt
@@ -14,8 +14,9 @@ import io.ktor.http.content.*
 import io.ktor.util.reflect.*
 import io.ktor.utils.io.core.*
 
+@Suppress("ktlint:standard:max-line-length")
 @Deprecated(
-    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client", // ktlint-disable max-line-length
+    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client",
     level = DeprecationLevel.ERROR
 )
 public class JacksonSerializer(
diff --git a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-serialization/common/src/io/ktor/client/plugins/kotlinx/serializer/KotlinxSerializer.kt b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-serialization/common/src/io/ktor/client/plugins/kotlinx/serializer/KotlinxSerializer.kt
index 28fbbf856c0..0822a6fbcd9 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-serialization/common/src/io/ktor/client/plugins/kotlinx/serializer/KotlinxSerializer.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-json/ktor-client-serialization/common/src/io/ktor/client/plugins/kotlinx/serializer/KotlinxSerializer.kt
@@ -19,8 +19,9 @@ import kotlinx.serialization.modules.*
 /**
  * A [JsonSerializer] implemented for kotlinx [Serializable] classes.
  */
+@Suppress("ktlint:standard:max-line-length")
 @Deprecated(
-    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client", // ktlint-disable max-line-length
+    "Please use ContentNegotiation plugin and its converters: https://ktor.io/docs/migration-to-20x.html#serialization-client",
     level = DeprecationLevel.ERROR
 )
 public class KotlinxSerializer(
diff --git a/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/KtorMDCContext.kt b/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/KtorMDCContext.kt
index d0131ca9cdd..a3a84222c9f 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/KtorMDCContext.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/KtorMDCContext.kt
@@ -7,5 +7,6 @@ package io.ktor.client.plugins.logging
 import io.ktor.utils.io.*
 import kotlin.coroutines.*
 
+@Suppress("FunctionName")
 @InternalAPI
 public expect fun MDCContext(): CoroutineContext.Element
diff --git a/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/Logging.kt b/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/Logging.kt
index df08d200cbe..2665b76d500 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/Logging.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-logging/common/src/io/ktor/client/plugins/logging/Logging.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.plugins.logging
@@ -242,6 +242,7 @@ public val Logging: ClientPlugin<LoggingConfig> = createClientPlugin("Logging",
 /**
  * Configures and installs [Logging] in [HttpClient].
  */
+@Suppress("FunctionName")
 public fun HttpClientConfig<*>.Logging(block: LoggingConfig.() -> Unit = {}) {
     install(Logging, block)
 }
diff --git a/ktor-client/ktor-client-plugins/ktor-client-logging/jsAndWasmShared/src/io/ktor/client/plugins/logging/KtorMDCContext.jsAndWasmShared.kt b/ktor-client/ktor-client-plugins/ktor-client-logging/jsAndWasmShared/src/io/ktor/client/plugins/logging/KtorMDCContext.jsAndWasmShared.kt
index 44ed24d4d55..8571a6315b1 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-logging/jsAndWasmShared/src/io/ktor/client/plugins/logging/KtorMDCContext.jsAndWasmShared.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-logging/jsAndWasmShared/src/io/ktor/client/plugins/logging/KtorMDCContext.jsAndWasmShared.kt
@@ -7,6 +7,7 @@ package io.ktor.client.plugins.logging
 import io.ktor.utils.io.*
 import kotlin.coroutines.*
 
+@Suppress("FunctionName")
 @InternalAPI
 public actual fun MDCContext(): CoroutineContext.Element = MDCContextElement
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-logging/jvm/src/io/ktor/client/plugins/logging/KtorMDCContext.jvm.kt b/ktor-client/ktor-client-plugins/ktor-client-logging/jvm/src/io/ktor/client/plugins/logging/KtorMDCContext.jvm.kt
index 85f830518a7..db83ca21e54 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-logging/jvm/src/io/ktor/client/plugins/logging/KtorMDCContext.jvm.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-logging/jvm/src/io/ktor/client/plugins/logging/KtorMDCContext.jvm.kt
@@ -5,9 +5,9 @@
 package io.ktor.client.plugins.logging
 
 import io.ktor.utils.io.*
-import kotlinx.coroutines.slf4j.*
 import kotlin.coroutines.*
 
+@Suppress("FunctionName")
 @InternalAPI
 public actual fun MDCContext(): CoroutineContext.Element {
     return kotlinx.coroutines.slf4j.MDCContext()
diff --git a/ktor-client/ktor-client-plugins/ktor-client-logging/posix/src/io/ktor/client/plugins/logging/KtorMDCContext.posix.kt b/ktor-client/ktor-client-plugins/ktor-client-logging/posix/src/io/ktor/client/plugins/logging/KtorMDCContext.posix.kt
index 44ed24d4d55..8571a6315b1 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-logging/posix/src/io/ktor/client/plugins/logging/KtorMDCContext.posix.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-logging/posix/src/io/ktor/client/plugins/logging/KtorMDCContext.posix.kt
@@ -7,6 +7,7 @@ package io.ktor.client.plugins.logging
 import io.ktor.utils.io.*
 import kotlin.coroutines.*
 
+@Suppress("FunctionName")
 @InternalAPI
 public actual fun MDCContext(): CoroutineContext.Element = MDCContextElement
 
diff --git a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketRemoteTest.kt b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketRemoteTest.kt
index f9f694f60e9..9e7a527cc98 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketRemoteTest.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketRemoteTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.tests.plugins
 
 import io.ktor.client.plugins.*
diff --git a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
index fa39d86ba80..2e15d5f5843 100644
--- a/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
+++ b/ktor-client/ktor-client-plugins/ktor-client-websockets/common/test/io/ktor/client/tests/plugins/WebSocketTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests.plugins
@@ -34,7 +34,8 @@ class WebSocketTest {
                 path = "/websocket"
             ) {
             }
-        } catch (_: Throwable) {}
+        } catch (_: Throwable) {
+        }
 
         assertEquals(443, port)
     }
diff --git a/ktor-client/ktor-client-tests/build.gradle.kts b/ktor-client/ktor-client-tests/build.gradle.kts
index bb37cd747f9..f958b354c65 100644
--- a/ktor-client/ktor-client-tests/build.gradle.kts
+++ b/ktor-client/ktor-client-tests/build.gradle.kts
@@ -4,10 +4,6 @@
 
 import test.server.*
 
-/*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
-
 description = "Common tests for client"
 
 plugins {
diff --git a/ktor-client/ktor-client-tests/common/src/io/ktor/client/tests/utils/CommonClientTestUtils.kt b/ktor-client/ktor-client-tests/common/src/io/ktor/client/tests/utils/CommonClientTestUtils.kt
index 59ac996b784..1dd64ca5266 100644
--- a/ktor-client/ktor-client-tests/common/src/io/ktor/client/tests/utils/CommonClientTestUtils.kt
+++ b/ktor-client/ktor-client-tests/common/src/io/ktor/client/tests/utils/CommonClientTestUtils.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 @file:Suppress("NO_EXPLICIT_RETURN_TYPE_IN_API_MODE_WARNING", "KDocMissingDocumentation")
@@ -148,6 +148,6 @@ fun TestClientBuilder<*>.test(block: suspend TestInfo.(client: HttpClient) -> Un
     test = block
 }
 
-fun TestClientBuilder<*>.after(block: suspend (client: HttpClient) -> Unit) { // ktlint-disable no-unit-return
+fun TestClientBuilder<*>.after(block: suspend (client: HttpClient) -> Unit) {
     after = block
 }
diff --git a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/HttpTimeoutTest.kt b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/HttpTimeoutTest.kt
index 7b603940353..18c0af4b9c8 100644
--- a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/HttpTimeoutTest.kt
+++ b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/HttpTimeoutTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests
@@ -440,7 +440,6 @@ class HttpTimeoutTest : ClientLoader() {
                 try {
                     client.get("http://localhost:11").body<String>()
                 } catch (_: ConnectTimeoutException) {
-                    /* Ignore. */
                 }
             }
         }
diff --git a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/LoggingMockedTests.kt b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/LoggingMockedTests.kt
index 28facc13bd3..399fad24101 100644
--- a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/LoggingMockedTests.kt
+++ b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/LoggingMockedTests.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.client.tests
 
@@ -18,6 +18,7 @@ import io.ktor.utils.io.core.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.*
 import kotlin.test.*
+import kotlin.time.Duration.Companion.seconds
 
 class LoggingMockedTests {
 
@@ -299,7 +300,6 @@ class LoggingMockedTests {
         }
     }
 
-    @OptIn(InternalAPI::class)
     @Test
     fun testCanStream() = testWithEngine(MockEngine) {
         val channel = ByteChannel(autoFlush = true)
@@ -332,7 +332,8 @@ class LoggingMockedTests {
 
             channel.writeStringUtf8("Hello world!\n")
 
-            withTimeout(5_000) { // the bug will cause this to timeout
+            // the bug will cause this to timeout
+            withTimeout(5.seconds) {
                 content.collect {
                     channel.close()
                 }
diff --git a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/MockedTests.kt b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/MockedTests.kt
index ae0d6578031..68a57e11fa0 100644
--- a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/MockedTests.kt
+++ b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/MockedTests.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests
@@ -48,11 +48,13 @@ class MockedTests {
 
             engine {
                 // these differ by one char at the end
+                @Suppress("ktlint:standard:max-line-length")
                 val longJSONString =
-                    """{"author": "H. P. Lovecraft", "name": "The Nameless City", "text": "When I drew nigh the nameless city I knew it was accursed. I was traveling in a parched and terrible valley under the moon, and afar I saw it protruding uncannily above the sands as parts of a corpse may protrude from an ill-made grave. Fear spoke from the age-worn stones of this hoary survivor of the deluge, this great-grandfather of the eldest pyramid; and a viewless aura repelled me and bade me retreat from antique and sinister secrets that no man should see, and no man else had dared to see..\nRemote in the desert of Araby lies the nameless city, crumbling and inarticulate, its low walls nearly hidden by the sands of uncounted ages. It must have been thus before the first stones of Memphis were laid, and while the bricks of Babylon were yet unbaked. There is no legend so old as to give it a name, or to recall that it was ever alive; but it is told of in whispers around campfires and muttered about by grandams in the tents of sheiks so that all the tribes shun it without wholly knowing why. It was of this place that Abdul Alhazred the mad poet dreamed of the night before he sang his unexplained couplet:\nThat is not dead which can eternal lie, / And with strange aeons even death may die.\nI should have known that the Arabs had good reason for shunning the nameless city, the city told of in strange tales but seen by no living man, yet I defied them and went into the untrodden waste with my camel. I alone have seen it, and that is why no other face bears such hideous lines of fear as mine; why no other man shivers so horribly when the night wind rattles the windows. When I came upon it in the ghastly stillness of unending sleep it looked at me, chilly from the rays of a cold moon amidst the desert's heat. And as I returned its look I forgot my triumph at finding it, and stopped still with my camel to wait for the dawn.\nFor hours I waited, till the east grew grey and the stars faded, and the grey turned to roseate light edged with gold. I heard a moaning and saw a storm of sand stirring among the antique stones though the sky was clear and the vast reaches of desert still. Then suddenly above the desert's far rim came the blazing edge of the sun, seen through the tiny sandstorm which was passing away, and in my fevered state I fancied that from some remote depth there came a crash of musical metal to hail the fiery disc as Memnon hails it from the banks of the Nile. My ears rang and my imagination seethed as I led my camel slowly across the sand to that unvocal place; that place which I alone of living men had seen.\nIn and out amongst the shapeless foundations of houses and places I wandered, finding never a carving or inscription to tell of these men, if men they were, who built this city and dwelt therein so long ago. The antiquity of the spot was unwholesome, and I longed to encounter some sign or device to prove that the city was indeed fashioned by mankind. There were certain proportions and dimensions in the ruins which I did not like. I had with me many tools, and dug much within the walls of the obliterated edifices; but progress was slow, and nothing significant was revealed. When night and the moon returned I felt a chill wind which brought new fear, so that I did not dare to remain in the city. And as I went outside the antique walls to sleep, a small sighing sandstorm gathered behind me, blowing over the grey stones though the moon was bright and most of the desert still.\nI awakened just at dawn from a pageant of horrible dreams, my ears ringing as from some metallic peal. I saw the sun peering redly through the last gusts of a little sandstorm that hovered over the nameless city, and marked the quietness of the rest of the landscape. Once more I ventured within those brooding ruins that swelled beneath the sand like an ogre under a coverlet, and again dug vainly for relics of the forgotten race. At noon I rested, and in the afternoon I spent much time tracing the walls and bygone streets, and the outlines of the nearly vanish..."}""" // ktlint-disable max-line-length
+                    """{"author": "H. P. Lovecraft", "name": "The Nameless City", "text": "When I drew nigh the nameless city I knew it was accursed. I was traveling in a parched and terrible valley under the moon, and afar I saw it protruding uncannily above the sands as parts of a corpse may protrude from an ill-made grave. Fear spoke from the age-worn stones of this hoary survivor of the deluge, this great-grandfather of the eldest pyramid; and a viewless aura repelled me and bade me retreat from antique and sinister secrets that no man should see, and no man else had dared to see..\nRemote in the desert of Araby lies the nameless city, crumbling and inarticulate, its low walls nearly hidden by the sands of uncounted ages. It must have been thus before the first stones of Memphis were laid, and while the bricks of Babylon were yet unbaked. There is no legend so old as to give it a name, or to recall that it was ever alive; but it is told of in whispers around campfires and muttered about by grandams in the tents of sheiks so that all the tribes shun it without wholly knowing why. It was of this place that Abdul Alhazred the mad poet dreamed of the night before he sang his unexplained couplet:\nThat is not dead which can eternal lie, / And with strange aeons even death may die.\nI should have known that the Arabs had good reason for shunning the nameless city, the city told of in strange tales but seen by no living man, yet I defied them and went into the untrodden waste with my camel. I alone have seen it, and that is why no other face bears such hideous lines of fear as mine; why no other man shivers so horribly when the night wind rattles the windows. When I came upon it in the ghastly stillness of unending sleep it looked at me, chilly from the rays of a cold moon amidst the desert's heat. And as I returned its look I forgot my triumph at finding it, and stopped still with my camel to wait for the dawn.\nFor hours I waited, till the east grew grey and the stars faded, and the grey turned to roseate light edged with gold. I heard a moaning and saw a storm of sand stirring among the antique stones though the sky was clear and the vast reaches of desert still. Then suddenly above the desert's far rim came the blazing edge of the sun, seen through the tiny sandstorm which was passing away, and in my fevered state I fancied that from some remote depth there came a crash of musical metal to hail the fiery disc as Memnon hails it from the banks of the Nile. My ears rang and my imagination seethed as I led my camel slowly across the sand to that unvocal place; that place which I alone of living men had seen.\nIn and out amongst the shapeless foundations of houses and places I wandered, finding never a carving or inscription to tell of these men, if men they were, who built this city and dwelt therein so long ago. The antiquity of the spot was unwholesome, and I longed to encounter some sign or device to prove that the city was indeed fashioned by mankind. There were certain proportions and dimensions in the ruins which I did not like. I had with me many tools, and dug much within the walls of the obliterated edifices; but progress was slow, and nothing significant was revealed. When night and the moon returned I felt a chill wind which brought new fear, so that I did not dare to remain in the city. And as I went outside the antique walls to sleep, a small sighing sandstorm gathered behind me, blowing over the grey stones though the moon was bright and most of the desert still.\nI awakened just at dawn from a pageant of horrible dreams, my ears ringing as from some metallic peal. I saw the sun peering redly through the last gusts of a little sandstorm that hovered over the nameless city, and marked the quietness of the rest of the landscape. Once more I ventured within those brooding ruins that swelled beneath the sand like an ogre under a coverlet, and again dug vainly for relics of the forgotten race. At noon I rested, and in the afternoon I spent much time tracing the walls and bygone streets, and the outlines of the nearly vanish..."}"""
 
+                @Suppress("ktlint:standard:max-line-length")
                 val longerJSONString =
-                    """{"author": "H. P. Lovecraft", "name": "The Nameless City", "text": "When I drew nigh the nameless city I knew it was accursed. I was traveling in a parched and terrible valley under the moon, and afar I saw it protruding uncannily above the sands as parts of a corpse may protrude from an ill-made grave. Fear spoke from the age-worn stones of this hoary survivor of the deluge, this great-grandfather of the eldest pyramid; and a viewless aura repelled me and bade me retreat from antique and sinister secrets that no man should see, and no man else had dared to see..\nRemote in the desert of Araby lies the nameless city, crumbling and inarticulate, its low walls nearly hidden by the sands of uncounted ages. It must have been thus before the first stones of Memphis were laid, and while the bricks of Babylon were yet unbaked. There is no legend so old as to give it a name, or to recall that it was ever alive; but it is told of in whispers around campfires and muttered about by grandams in the tents of sheiks so that all the tribes shun it without wholly knowing why. It was of this place that Abdul Alhazred the mad poet dreamed of the night before he sang his unexplained couplet:\nThat is not dead which can eternal lie, / And with strange aeons even death may die.\nI should have known that the Arabs had good reason for shunning the nameless city, the city told of in strange tales but seen by no living man, yet I defied them and went into the untrodden waste with my camel. I alone have seen it, and that is why no other face bears such hideous lines of fear as mine; why no other man shivers so horribly when the night wind rattles the windows. When I came upon it in the ghastly stillness of unending sleep it looked at me, chilly from the rays of a cold moon amidst the desert's heat. And as I returned its look I forgot my triumph at finding it, and stopped still with my camel to wait for the dawn.\nFor hours I waited, till the east grew grey and the stars faded, and the grey turned to roseate light edged with gold. I heard a moaning and saw a storm of sand stirring among the antique stones though the sky was clear and the vast reaches of desert still. Then suddenly above the desert's far rim came the blazing edge of the sun, seen through the tiny sandstorm which was passing away, and in my fevered state I fancied that from some remote depth there came a crash of musical metal to hail the fiery disc as Memnon hails it from the banks of the Nile. My ears rang and my imagination seethed as I led my camel slowly across the sand to that unvocal place; that place which I alone of living men had seen.\nIn and out amongst the shapeless foundations of houses and places I wandered, finding never a carving or inscription to tell of these men, if men they were, who built this city and dwelt therein so long ago. The antiquity of the spot was unwholesome, and I longed to encounter some sign or device to prove that the city was indeed fashioned by mankind. There were certain proportions and dimensions in the ruins which I did not like. I had with me many tools, and dug much within the walls of the obliterated edifices; but progress was slow, and nothing significant was revealed. When night and the moon returned I felt a chill wind which brought new fear, so that I did not dare to remain in the city. And as I went outside the antique walls to sleep, a small sighing sandstorm gathered behind me, blowing over the grey stones though the moon was bright and most of the desert still.\nI awakened just at dawn from a pageant of horrible dreams, my ears ringing as from some metallic peal. I saw the sun peering redly through the last gusts of a little sandstorm that hovered over the nameless city, and marked the quietness of the rest of the landscape. Once more I ventured within those brooding ruins that swelled beneath the sand like an ogre under a coverlet, and again dug vainly for relics of the forgotten race. At noon I rested, and in the afternoon I spent much time tracing the walls and bygone streets, and the outlines of the nearly vanishe..."}""" // ktlint-disable max-line-length
+                    """{"author": "H. P. Lovecraft", "name": "The Nameless City", "text": "When I drew nigh the nameless city I knew it was accursed. I was traveling in a parched and terrible valley under the moon, and afar I saw it protruding uncannily above the sands as parts of a corpse may protrude from an ill-made grave. Fear spoke from the age-worn stones of this hoary survivor of the deluge, this great-grandfather of the eldest pyramid; and a viewless aura repelled me and bade me retreat from antique and sinister secrets that no man should see, and no man else had dared to see..\nRemote in the desert of Araby lies the nameless city, crumbling and inarticulate, its low walls nearly hidden by the sands of uncounted ages. It must have been thus before the first stones of Memphis were laid, and while the bricks of Babylon were yet unbaked. There is no legend so old as to give it a name, or to recall that it was ever alive; but it is told of in whispers around campfires and muttered about by grandams in the tents of sheiks so that all the tribes shun it without wholly knowing why. It was of this place that Abdul Alhazred the mad poet dreamed of the night before he sang his unexplained couplet:\nThat is not dead which can eternal lie, / And with strange aeons even death may die.\nI should have known that the Arabs had good reason for shunning the nameless city, the city told of in strange tales but seen by no living man, yet I defied them and went into the untrodden waste with my camel. I alone have seen it, and that is why no other face bears such hideous lines of fear as mine; why no other man shivers so horribly when the night wind rattles the windows. When I came upon it in the ghastly stillness of unending sleep it looked at me, chilly from the rays of a cold moon amidst the desert's heat. And as I returned its look I forgot my triumph at finding it, and stopped still with my camel to wait for the dawn.\nFor hours I waited, till the east grew grey and the stars faded, and the grey turned to roseate light edged with gold. I heard a moaning and saw a storm of sand stirring among the antique stones though the sky was clear and the vast reaches of desert still. Then suddenly above the desert's far rim came the blazing edge of the sun, seen through the tiny sandstorm which was passing away, and in my fevered state I fancied that from some remote depth there came a crash of musical metal to hail the fiery disc as Memnon hails it from the banks of the Nile. My ears rang and my imagination seethed as I led my camel slowly across the sand to that unvocal place; that place which I alone of living men had seen.\nIn and out amongst the shapeless foundations of houses and places I wandered, finding never a carving or inscription to tell of these men, if men they were, who built this city and dwelt therein so long ago. The antiquity of the spot was unwholesome, and I longed to encounter some sign or device to prove that the city was indeed fashioned by mankind. There were certain proportions and dimensions in the ruins which I did not like. I had with me many tools, and dug much within the walls of the obliterated edifices; but progress was slow, and nothing significant was revealed. When night and the moon returned I felt a chill wind which brought new fear, so that I did not dare to remain in the city. And as I went outside the antique walls to sleep, a small sighing sandstorm gathered behind me, blowing over the grey stones though the moon was bright and most of the desert still.\nI awakened just at dawn from a pageant of horrible dreams, my ears ringing as from some metallic peal. I saw the sun peering redly through the last gusts of a little sandstorm that hovered over the nameless city, and marked the quietness of the rest of the landscape. Once more I ventured within those brooding ruins that swelled beneath the sand like an ogre under a coverlet, and again dug vainly for relics of the forgotten race. At noon I rested, and in the afternoon I spent much time tracing the walls and bygone streets, and the outlines of the nearly vanishe..."}"""
                 val responseHeaders = headersOf("Content-Type" to listOf(ContentType.Application.Json.toString()))
 
                 addHandler { request ->
diff --git a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/CacheTest.kt b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/CacheTest.kt
index 8e2bd721ac2..6fe9a02296b 100644
--- a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/CacheTest.kt
+++ b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/CacheTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.tests.plugins
 
 import io.ktor.client.call.*
diff --git a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/UserAgentTest.kt b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/UserAgentTest.kt
index 104c069cd2c..b52832098c7 100644
--- a/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/UserAgentTest.kt
+++ b/ktor-client/ktor-client-tests/common/test/io/ktor/client/tests/plugins/UserAgentTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.client.tests.plugins
 
 import io.ktor.client.call.*
diff --git a/ktor-client/ktor-client-tests/js/src/io/ktor/client/tests/utils/ClientLoaderJs.kt b/ktor-client/ktor-client-tests/js/src/io/ktor/client/tests/utils/ClientLoaderJs.kt
index cc158c7b8c6..d5641a97b8b 100644
--- a/ktor-client/ktor-client-tests/js/src/io/ktor/client/tests/utils/ClientLoaderJs.kt
+++ b/ktor-client/ktor-client-tests/js/src/io/ktor/client/tests/utils/ClientLoaderJs.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests.utils
diff --git a/ktor-client/ktor-client-tests/js/test/io/ktor/client/tests/utils/NodeFetchOptionsTest.kt b/ktor-client/ktor-client-tests/js/test/io/ktor/client/tests/utils/NodeFetchOptionsTest.kt
index b451b8094f5..560c0467050 100644
--- a/ktor-client/ktor-client-tests/js/test/io/ktor/client/tests/utils/NodeFetchOptionsTest.kt
+++ b/ktor-client/ktor-client-tests/js/test/io/ktor/client/tests/utils/NodeFetchOptionsTest.kt
@@ -1,19 +1,15 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests.utils
 
 import io.ktor.client.*
 import io.ktor.client.call.*
-import io.ktor.client.engine.*
 import io.ktor.client.engine.js.*
 import io.ktor.client.request.*
-import io.ktor.client.statement.*
 import io.ktor.test.dispatcher.*
 import io.ktor.util.*
-import kotlinx.coroutines.*
 import kotlin.test.*
 
 class NodeFetchOptionsTest {
diff --git a/ktor-client/ktor-client-tests/jvm/src/io/ktor/client/tests/utils/ClientLoaderJvm.kt b/ktor-client/ktor-client-tests/jvm/src/io/ktor/client/tests/utils/ClientLoaderJvm.kt
index 07ee187b3b0..b21b2e55cf2 100644
--- a/ktor-client/ktor-client-tests/jvm/src/io/ktor/client/tests/utils/ClientLoaderJvm.kt
+++ b/ktor-client/ktor-client-tests/jvm/src/io/ktor/client/tests/utils/ClientLoaderJvm.kt
@@ -83,8 +83,8 @@ actual abstract class ClientLoader actual constructor(val timeoutSeconds: Int) {
      * Issues to fix before unlock:
      * 1. Pinger & Ponger in ws
      * 2. Nonce generator
+     * Then @After should be added to the function
      */
-    // @After
     @OptIn(ExperimentalCoroutinesApi::class)
     fun waitForAllCoroutines() {
         check(DebugProbes.isInstalled) {
diff --git a/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/DefaultTransformJvmTest.kt b/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/DefaultTransformJvmTest.kt
index 95b072b8230..e0f159cfaec 100644
--- a/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/DefaultTransformJvmTest.kt
+++ b/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/DefaultTransformJvmTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests
@@ -15,10 +15,6 @@ import io.ktor.utils.io.*
 import java.io.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class DefaultTransformJvmTest {
 
     @Test
diff --git a/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/FileCacheTest.kt b/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/FileCacheTest.kt
index 6dc60c1ddb5..f6a402abc48 100644
--- a/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/FileCacheTest.kt
+++ b/ktor-client/ktor-client-tests/jvm/test/io/ktor/client/tests/FileCacheTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.client.tests
 
 import io.ktor.client.call.*
diff --git a/ktor-client/ktor-client-tests/wasmJs/src/io/ktor/client/tests/utils/ClientLoaderWasm.kt b/ktor-client/ktor-client-tests/wasmJs/src/io/ktor/client/tests/utils/ClientLoaderWasm.kt
index bac76c033d8..b84312a5920 100644
--- a/ktor-client/ktor-client-tests/wasmJs/src/io/ktor/client/tests/utils/ClientLoaderWasm.kt
+++ b/ktor-client/ktor-client-tests/wasmJs/src/io/ktor/client/tests/utils/ClientLoaderWasm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.client.tests.utils
diff --git a/ktor-http/common/src/io/ktor/http/Codecs.kt b/ktor-http/common/src/io/ktor/http/Codecs.kt
index d06095e3636..df732780731 100644
--- a/ktor-http/common/src/io/ktor/http/Codecs.kt
+++ b/ktor-http/common/src/io/ktor/http/Codecs.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.http
 
 import io.ktor.utils.io.charsets.*
diff --git a/ktor-http/common/src/io/ktor/http/URLBuilder.kt b/ktor-http/common/src/io/ktor/http/URLBuilder.kt
index 8e73ed58c11..721c4c2671c 100644
--- a/ktor-http/common/src/io/ktor/http/URLBuilder.kt
+++ b/ktor-http/common/src/io/ktor/http/URLBuilder.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.http
 
@@ -44,7 +44,9 @@ public class URLBuilder(
     public var protocolOrNull: URLProtocol? = protocol
     public var protocol: URLProtocol
         get() = protocolOrNull ?: URLProtocol.HTTP
-        set(value) { protocolOrNull = value }
+        set(value) {
+            protocolOrNull = value
+        }
 
     public var encodedUser: String? = user?.encodeURLParameter()
 
@@ -88,14 +90,13 @@ public class URLBuilder(
     /**
      * Build a URL string
      */
-    // note: 256 should fit 99.5% of all urls according to http://www.supermind.org/blog/740/average-length-of-a-url-part-2
     public fun buildString(): String {
         applyOrigin()
-        return appendTo(StringBuilder(256)).toString()
+        return appendTo(StringBuilder(INITIAL_CAPACITY)).toString()
     }
 
     override fun toString(): String {
-        return appendTo(StringBuilder(256)).toString()
+        return appendTo(StringBuilder(INITIAL_CAPACITY)).toString()
     }
 
     /**
@@ -127,6 +128,12 @@ public class URLBuilder(
     // Required to write external extension function
     public companion object {
         private val originUrl = Url(origin)
+
+        /**
+         * Initial capacity of StringBuilder.
+         * Note: 256 should fit 99.5% of all urls according to http://www.supermind.org/blog/740/average-length-of-a-url-part-2
+         */
+        private const val INITIAL_CAPACITY = 256
     }
 }
 
diff --git a/ktor-http/common/test/io/ktor/tests/http/CodecTest.kt b/ktor-http/common/test/io/ktor/tests/http/CodecTest.kt
index 669b9c49ad1..59240ce4752 100644
--- a/ktor-http/common/test/io/ktor/tests/http/CodecTest.kt
+++ b/ktor-http/common/test/io/ktor/tests/http/CodecTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.http
@@ -14,7 +14,7 @@ class CodecTest {
     private val urlPath = "/wikipedia/commons/9/9c/University_of_Illinois_at_Urbana\u2013Champaign_logo.svg"
     private val surrogateSymbolUrlPath = "/path/🐕"
 
-    @Test /*(timeout = 1000L)*/
+    @Test
     @Ignore
     fun testDecodeRandom() {
         val chars = "+%0123abc"
diff --git a/ktor-http/common/test/io/ktor/tests/http/HttpStatusCodeTest.kt b/ktor-http/common/test/io/ktor/tests/http/HttpStatusCodeTest.kt
index 46e047010a9..20c038baf35 100644
--- a/ktor-http/common/test/io/ktor/tests/http/HttpStatusCodeTest.kt
+++ b/ktor-http/common/test/io/ktor/tests/http/HttpStatusCodeTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.http
@@ -9,27 +9,27 @@ import kotlin.test.*
 
 class HttpStatusCodeTest {
     @Test
-    fun HttpStatusCodeAll() {
+    fun httpStatusCodeAll() {
         assertEquals(53, HttpStatusCode.allStatusCodes.size)
     }
 
     @Test
-    fun HttpStatusCodeFromValue() {
+    fun httpStatusCodeFromValue() {
         assertEquals(HttpStatusCode.NotFound, HttpStatusCode.fromValue(404))
     }
 
     @Test
-    fun HttpStatusCodeConstructed() {
+    fun httpStatusCodeConstructed() {
         assertEquals(HttpStatusCode.NotFound, HttpStatusCode(404, "Not Found"))
     }
 
     @Test
-    fun HttpStatusCodeWithDescription() {
+    fun httpStatusCodeWithDescription() {
         assertEquals(HttpStatusCode.NotFound, HttpStatusCode.NotFound.description("Missing Resource"))
     }
 
     @Test
-    fun HttpStatusCodeToString() {
+    fun httpStatusCodeToString() {
         assertEquals("404 Not Found", HttpStatusCode.NotFound.toString())
     }
 }
diff --git a/ktor-http/jvm/test/io/ktor/tests/http/URLBuilderTest.kt b/ktor-http/jvm/test/io/ktor/tests/http/URLBuilderTest.kt
index 84744d3d8ba..41baf99221c 100644
--- a/ktor-http/jvm/test/io/ktor/tests/http/URLBuilderTest.kt
+++ b/ktor-http/jvm/test/io/ktor/tests/http/URLBuilderTest.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.http
diff --git a/ktor-io/androidNative/src/Charset.androidNative.kt b/ktor-io/androidNative/src/Charset.androidNative.kt
index 6dea7dfa468..c345e25aa00 100644
--- a/ktor-io/androidNative/src/Charset.androidNative.kt
+++ b/ktor-io/androidNative/src/Charset.androidNative.kt
@@ -1,6 +1,7 @@
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.utils.io.charsets
 
 import io.ktor.utils.io.core.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/bits/ByteOrder.kt b/ktor-io/common/src/io/ktor/utils/io/bits/ByteOrder.kt
index 07c1b3a4204..a57e3f21829 100644
--- a/ktor-io/common/src/io/ktor/utils/io/bits/ByteOrder.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/bits/ByteOrder.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.bits
 
 /**
diff --git a/ktor-io/common/src/io/ktor/utils/io/charsets/Encoding.kt b/ktor-io/common/src/io/ktor/utils/io/charsets/Encoding.kt
index a985e86afb8..1fd20fcf549 100644
--- a/ktor-io/common/src/io/ktor/utils/io/charsets/Encoding.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/charsets/Encoding.kt
@@ -1,9 +1,12 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.charsets
 
 import io.ktor.utils.io.core.*
 import io.ktor.utils.io.core.internal.*
 import kotlinx.io.*
-import kotlinx.io.IOException
 
 public expect abstract class Charset {
     public abstract fun newEncoder(): CharsetEncoder
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Buffer.kt b/ktor-io/common/src/io/ktor/utils/io/core/Buffer.kt
index cf763d4fad4..f54fd85b51d 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Buffer.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Buffer.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 @file:Suppress("NOTHING_TO_INLINE")
 
 package io.ktor.utils.io.core
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/BufferAppend.kt b/ktor-io/common/src/io/ktor/utils/io/core/BufferAppend.kt
index 5c1bd6cc928..fa24dbdb8cb 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/BufferAppend.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/BufferAppend.kt
@@ -1,6 +1,10 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
-import io.ktor.utils.io.IO_DEPRECATION_MESSAGE
+import io.ktor.utils.io.*
 import kotlinx.io.Buffer
 import kotlin.math.*
 
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Buffers.kt b/ktor-io/common/src/io/ktor/utils/io/core/Buffers.kt
index 76d701844b6..0d13f2af7db 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Buffers.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Buffers.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 import kotlinx.io.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Builder.kt b/ktor-io/common/src/io/ktor/utils/io/core/Builder.kt
index 8deedc71ba8..88b25573e99 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Builder.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Builder.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 import kotlinx.io.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/ByteOrder.kt b/ktor-io/common/src/io/ktor/utils/io/core/ByteOrder.kt
index 80a7b5cabfc..4d5f749681d 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/ByteOrder.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/ByteOrder.kt
@@ -1,7 +1,12 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 public expect enum class ByteOrder {
-    BIG_ENDIAN, LITTLE_ENDIAN;
+    BIG_ENDIAN,
+    LITTLE_ENDIAN;
 
     public companion object {
         public fun nativeOrder(): ByteOrder
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/BytePacketBuilder.kt b/ktor-io/common/src/io/ktor/utils/io/core/BytePacketBuilder.kt
index 1570a3e31aa..ea4e3d4e428 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/BytePacketBuilder.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/BytePacketBuilder.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 @file:Suppress("RedundantModalityModifier")
 
 package io.ktor.utils.io.core
@@ -14,6 +18,7 @@ public typealias BytePacketBuilder = Sink
 @OptIn(InternalIoApi::class)
 public val Sink.size: Int get() = buffer.size.toInt()
 
+@Suppress("FunctionName")
 public fun BytePacketBuilder(): Sink = kotlinx.io.Buffer()
 
 public fun Sink.append(value: CharSequence, startIndex: Int = 0, endIndex: Int = value.length) {
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/ByteReadPacket.kt b/ktor-io/common/src/io/ktor/utils/io/core/ByteReadPacket.kt
index db384f0cdb6..4fc4b885125 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/ByteReadPacket.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/ByteReadPacket.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 @file:Suppress("RedundantModalityModifier", "FunctionName")
 
 package io.ktor.utils.io.core
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Copy.kt b/ktor-io/common/src/io/ktor/utils/io/core/Copy.kt
index fae935d2fcc..efb8933f388 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Copy.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Copy.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 import kotlinx.io.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Output.kt b/ktor-io/common/src/io/ktor/utils/io/core/Output.kt
index f7ee4b1b100..2d848a4e843 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Output.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Output.kt
@@ -1,6 +1,10 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
-import io.ktor.utils.io.IO_DEPRECATION_MESSAGE
+import io.ktor.utils.io.*
 
 /**
  * This shouldn't be implemented directly. Inherit [Output] instead.
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Packet.kt b/ktor-io/common/src/io/ktor/utils/io/core/Packet.kt
index c408f6fb287..df9543fed96 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Packet.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Packet.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 @file:Suppress("RedundantModalityModifier")
 
 package io.ktor.utils.io.core
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/Strings.kt b/ktor-io/common/src/io/ktor/utils/io/core/Strings.kt
index f5ecf206c4b..9a1d694f7b9 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/Strings.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/Strings.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 import io.ktor.utils.io.charsets.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/internal/ChunkBuffer.kt b/ktor-io/common/src/io/ktor/utils/io/core/internal/ChunkBuffer.kt
index 5106477abb9..2644e669fe8 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/internal/ChunkBuffer.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/internal/ChunkBuffer.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core.internal
 
 import io.ktor.utils.io.*
diff --git a/ktor-io/common/src/io/ktor/utils/io/core/internal/Numbers.kt b/ktor-io/common/src/io/ktor/utils/io/core/internal/Numbers.kt
index 1bbf3b9ff47..c92e26df217 100644
--- a/ktor-io/common/src/io/ktor/utils/io/core/internal/Numbers.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/core/internal/Numbers.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core.internal
 
 @PublishedApi
diff --git a/ktor-io/common/src/io/ktor/utils/io/pool/Pool.kt b/ktor-io/common/src/io/ktor/utils/io/pool/Pool.kt
index 75cd1a9640b..d5e79924433 100644
--- a/ktor-io/common/src/io/ktor/utils/io/pool/Pool.kt
+++ b/ktor-io/common/src/io/ktor/utils/io/pool/Pool.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.pool
 
 import kotlinx.atomicfu.*
diff --git a/ktor-io/common/test/ByteChannelTest.kt b/ktor-io/common/test/ByteChannelTest.kt
index 6965217b650..a5d9948eb4d 100644
--- a/ktor-io/common/test/ByteChannelTest.kt
+++ b/ktor-io/common/test/ByteChannelTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.core.*
@@ -5,10 +9,6 @@ import kotlinx.coroutines.*
 import kotlinx.io.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ByteChannelTest {
 
     @Test
diff --git a/ktor-io/common/test/ByteReadChannelOperationsTest.kt b/ktor-io/common/test/ByteReadChannelOperationsTest.kt
index 775c286fa54..45d8370df89 100644
--- a/ktor-io/common/test/ByteReadChannelOperationsTest.kt
+++ b/ktor-io/common/test/ByteReadChannelOperationsTest.kt
@@ -1,18 +1,17 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.core.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.test.runTest
 import kotlinx.io.*
-import kotlinx.io.IOException
 import kotlinx.io.bytestring.*
 import kotlin.test.*
 import kotlin.time.Duration.Companion.seconds
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ByteReadChannelOperationsTest {
 
     @Test
diff --git a/ktor-io/common/test/CoroutinesTest.kt b/ktor-io/common/test/CoroutinesTest.kt
index 337559f707d..f4a1a23873d 100644
--- a/ktor-io/common/test/CoroutinesTest.kt
+++ b/ktor-io/common/test/CoroutinesTest.kt
@@ -1,12 +1,12 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import kotlinx.coroutines.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class CoroutinesTest {
 
     @OptIn(DelicateCoroutinesApi::class)
diff --git a/ktor-io/common/test/ReadUtf8LineTest.kt b/ktor-io/common/test/ReadUtf8LineTest.kt
index 83ee8b96a07..049fc4a1d3b 100644
--- a/ktor-io/common/test/ReadUtf8LineTest.kt
+++ b/ktor-io/common/test/ReadUtf8LineTest.kt
@@ -1,13 +1,13 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.charsets.*
 import kotlinx.coroutines.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ReadUtf8LineTest {
 
     @Test
diff --git a/ktor-io/common/test/WriterReaderTest.kt b/ktor-io/common/test/WriterReaderTest.kt
index 295b1c308f3..e97ab995af9 100644
--- a/ktor-io/common/test/WriterReaderTest.kt
+++ b/ktor-io/common/test/WriterReaderTest.kt
@@ -1,13 +1,13 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.test.dispatcher.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.CancellationException
 import kotlinx.coroutines.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class WriterReaderTest {
 
     @OptIn(DelicateCoroutinesApi::class)
diff --git a/ktor-io/js/src/io/ktor/utils/io/charsets/TextEncoder.js.kt b/ktor-io/js/src/io/ktor/utils/io/charsets/TextEncoder.js.kt
index 5a265e1bf49..74d5625e18f 100644
--- a/ktor-io/js/src/io/ktor/utils/io/charsets/TextEncoder.js.kt
+++ b/ktor-io/js/src/io/ktor/utils/io/charsets/TextEncoder.js.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.charsets
 
 import org.khronos.webgl.*
diff --git a/ktor-io/js/src/io/ktor/utils/io/core/ByteOrderJS.kt b/ktor-io/js/src/io/ktor/utils/io/core/ByteOrderJS.kt
index 8e201eedd13..016ba35a60f 100644
--- a/ktor-io/js/src/io/ktor/utils/io/core/ByteOrderJS.kt
+++ b/ktor-io/js/src/io/ktor/utils/io/core/ByteOrderJS.kt
@@ -2,13 +2,13 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.utils.io.core
 
 import org.khronos.webgl.*
 
 public actual enum class ByteOrder {
-    BIG_ENDIAN, LITTLE_ENDIAN;
+    BIG_ENDIAN,
+    LITTLE_ENDIAN;
 
     public actual companion object {
         private val native: ByteOrder
diff --git a/ktor-io/jsAndWasmShared/src/io/ktor/utils/io/charsets/ISO88591.kt b/ktor-io/jsAndWasmShared/src/io/ktor/utils/io/charsets/ISO88591.kt
index c755fe65309..e0555d34a51 100644
--- a/ktor-io/jsAndWasmShared/src/io/ktor/utils/io/charsets/ISO88591.kt
+++ b/ktor-io/jsAndWasmShared/src/io/ktor/utils/io/charsets/ISO88591.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.charsets
 
 import kotlinx.io.*
diff --git a/ktor-io/jvm/src/io/ktor/utils/io/core/BufferPrimitivesJvm.kt b/ktor-io/jvm/src/io/ktor/utils/io/core/BufferPrimitivesJvm.kt
index 1ce739f2186..57efee9506c 100644
--- a/ktor-io/jvm/src/io/ktor/utils/io/core/BufferPrimitivesJvm.kt
+++ b/ktor-io/jvm/src/io/ktor/utils/io/core/BufferPrimitivesJvm.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.core
 
 import kotlinx.io.*
diff --git a/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Reading.kt b/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Reading.kt
index 4640d1d91af..4c890f0d34d 100644
--- a/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Reading.kt
+++ b/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Reading.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.jvm.javaio
 
 import io.ktor.utils.io.*
@@ -10,7 +14,6 @@ import kotlinx.io.EOFException
 import kotlinx.io.IOException
 import java.io.*
 import java.nio.*
-import java.nio.channels.*
 import kotlin.coroutines.*
 
 /**
diff --git a/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Writing.kt b/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Writing.kt
index 3a356b81c4f..be84138613e 100644
--- a/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Writing.kt
+++ b/ktor-io/jvm/src/io/ktor/utils/io/jvm/javaio/Writing.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.utils.io.jvm.javaio
 
 import io.ktor.utils.io.*
diff --git a/ktor-io/jvm/test/ByteChannelConcurrentTest.kt b/ktor-io/jvm/test/ByteChannelConcurrentTest.kt
index ca8bfd502ac..609c0bbe12b 100644
--- a/ktor-io/jvm/test/ByteChannelConcurrentTest.kt
+++ b/ktor-io/jvm/test/ByteChannelConcurrentTest.kt
@@ -7,10 +7,6 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.test.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ByteChannelConcurrentTest {
 
     @OptIn(DelicateCoroutinesApi::class)
diff --git a/ktor-io/jvm/test/ByteReadChannelOperationsJvmTest.kt b/ktor-io/jvm/test/ByteReadChannelOperationsJvmTest.kt
index c9ccd46a195..7b6514c37c3 100644
--- a/ktor-io/jvm/test/ByteReadChannelOperationsJvmTest.kt
+++ b/ktor-io/jvm/test/ByteReadChannelOperationsJvmTest.kt
@@ -1,11 +1,11 @@
-import io.ktor.utils.io.*
-import kotlinx.coroutines.*
-import kotlin.test.*
-
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+import io.ktor.utils.io.*
+import kotlinx.coroutines.*
+import kotlin.test.*
+
 class ByteReadChannelOperationsJvmTest {
 
     @Test
diff --git a/ktor-io/jvm/test/ByteReadChannelReadTest.jvm.kt b/ktor-io/jvm/test/ByteReadChannelReadTest.jvm.kt
index 047a9de82dc..3728e1b3f47 100644
--- a/ktor-io/jvm/test/ByteReadChannelReadTest.jvm.kt
+++ b/ktor-io/jvm/test/ByteReadChannelReadTest.jvm.kt
@@ -1,13 +1,12 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.utils.io.*
-import kotlinx.coroutines.*
 import kotlinx.coroutines.test.*
 import java.nio.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ByteReadChannelReadTest {
 
     @Test
diff --git a/ktor-io/jvm/test/ByteReadPacketExtensionsJvmTest.kt b/ktor-io/jvm/test/ByteReadPacketExtensionsJvmTest.kt
index f9f764261ef..b5bb11b5ab9 100644
--- a/ktor-io/jvm/test/ByteReadPacketExtensionsJvmTest.kt
+++ b/ktor-io/jvm/test/ByteReadPacketExtensionsJvmTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.utils.io.core.*
 import kotlinx.coroutines.test.*
 import kotlinx.io.*
@@ -7,10 +11,6 @@ import kotlin.random.*
 import kotlin.test.*
 import kotlin.text.String
 
-/*
- * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class ByteReadPacketExtensionsJvmTest {
 
     @Test
diff --git a/ktor-io/jvm/test/LookAheadSessionTest.kt b/ktor-io/jvm/test/LookAheadSessionTest.kt
index 7209bac1dae..27a95166b4c 100644
--- a/ktor-io/jvm/test/LookAheadSessionTest.kt
+++ b/ktor-io/jvm/test/LookAheadSessionTest.kt
@@ -1,11 +1,11 @@
-import io.ktor.utils.io.*
-import kotlinx.coroutines.*
-import kotlin.test.*
-
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+import io.ktor.utils.io.*
+import kotlinx.coroutines.*
+import kotlin.test.*
+
 class LookAheadSessionTest {
 
     @Test
diff --git a/ktor-io/linux/src/CharsetLinux.kt b/ktor-io/linux/src/CharsetLinux.kt
index 083389a066c..5bd00bf6f2f 100644
--- a/ktor-io/linux/src/CharsetLinux.kt
+++ b/ktor-io/linux/src/CharsetLinux.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.utils.io.charsets
 
 import io.ktor.utils.io.core.*
diff --git a/ktor-io/mingwX64/src/CharsetMingw.kt b/ktor-io/mingwX64/src/CharsetMingw.kt
index 000554af04e..8c3a5892311 100644
--- a/ktor-io/mingwX64/src/CharsetMingw.kt
+++ b/ktor-io/mingwX64/src/CharsetMingw.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.utils.io.charsets
 
 import io.ktor.utils.io.core.*
diff --git a/ktor-io/posix/src/io/ktor/utils/io/core/ByteOrderNative.kt b/ktor-io/posix/src/io/ktor/utils/io/core/ByteOrderNative.kt
index 15d5bf70511..56a23ed58a5 100644
--- a/ktor-io/posix/src/io/ktor/utils/io/core/ByteOrderNative.kt
+++ b/ktor-io/posix/src/io/ktor/utils/io/core/ByteOrderNative.kt
@@ -2,13 +2,13 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.utils.io.core
 
 import kotlin.experimental.*
 
 public actual enum class ByteOrder {
-    BIG_ENDIAN, LITTLE_ENDIAN;
+    BIG_ENDIAN,
+    LITTLE_ENDIAN;
 
     public actual companion object {
         @OptIn(ExperimentalNativeApi::class)
diff --git a/ktor-io/posix/src/io/ktor/utils/io/locks/Synchronized.kt b/ktor-io/posix/src/io/ktor/utils/io/locks/Synchronized.kt
index 023197000fe..a0c7850fe07 100644
--- a/ktor-io/posix/src/io/ktor/utils/io/locks/Synchronized.kt
+++ b/ktor-io/posix/src/io/ktor/utils/io/locks/Synchronized.kt
@@ -148,8 +148,9 @@ public actual open class SynchronizedObject {
         val currentThreadId = pthread_self()
         while (true) {
             val state = lock.value
+            @Suppress("ktlint:standard:max-line-length")
             require(currentThreadId == state.ownerThreadId) {
-                "Thin lock may be only released by the owner thread, expected: ${state.ownerThreadId}, real: $currentThreadId" // ktlint-disable max-line-length
+                "Thin lock may be only released by the owner thread, expected: ${state.ownerThreadId}, real: $currentThreadId"
             }
             when (state.status) {
                 Status.THIN -> {
diff --git a/ktor-io/wasmJs/src/io/ktor/utils/io/core/ByteOrder.wasmJs.kt b/ktor-io/wasmJs/src/io/ktor/utils/io/core/ByteOrder.wasmJs.kt
index 091922de291..016ba35a60f 100644
--- a/ktor-io/wasmJs/src/io/ktor/utils/io/core/ByteOrder.wasmJs.kt
+++ b/ktor-io/wasmJs/src/io/ktor/utils/io/core/ByteOrder.wasmJs.kt
@@ -7,7 +7,8 @@ package io.ktor.utils.io.core
 import org.khronos.webgl.*
 
 public actual enum class ByteOrder {
-    BIG_ENDIAN, LITTLE_ENDIAN;
+    BIG_ENDIAN,
+    LITTLE_ENDIAN;
 
     public actual companion object {
         private val native: ByteOrder
diff --git a/ktor-network/androidNative/src/io/ktor/network/util/SocketUtils.androidNative.kt b/ktor-network/androidNative/src/io/ktor/network/util/SocketUtils.androidNative.kt
index 5fc38c42575..d9afe21a9ee 100644
--- a/ktor-network/androidNative/src/io/ktor/network/util/SocketUtils.androidNative.kt
+++ b/ktor-network/androidNative/src/io/ktor/network/util/SocketUtils.androidNative.kt
@@ -2,6 +2,8 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import io.ktor.network.interop.*
diff --git a/ktor-network/androidNative32/src/SocketUtils.androidNative32.kt b/ktor-network/androidNative32/src/SocketUtils.androidNative32.kt
index a513f2508b7..b78117d4237 100644
--- a/ktor-network/androidNative32/src/SocketUtils.androidNative32.kt
+++ b/ktor-network/androidNative32/src/SocketUtils.androidNative32.kt
@@ -2,13 +2,14 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
-import kotlinx.cinterop.ByteVar
 import platform.posix.*
 
-@OptIn(UnsafeNumber::class, ExperimentalForeignApi::class)
+@OptIn(ExperimentalForeignApi::class)
 internal actual fun ktor_recvfrom(
     __fd: Int,
     __buf: CValuesRef<ByteVar>?,
diff --git a/ktor-network/androidNative64/src/SocketUtils.androidNative64.kt b/ktor-network/androidNative64/src/SocketUtils.androidNative64.kt
index 3bb52983ee4..eb229ebb639 100644
--- a/ktor-network/androidNative64/src/SocketUtils.androidNative64.kt
+++ b/ktor-network/androidNative64/src/SocketUtils.androidNative64.kt
@@ -2,14 +2,14 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
-import kotlinx.cinterop.ByteVar
-import kotlinx.cinterop.convert
 import platform.posix.*
 
-@OptIn(UnsafeNumber::class, ExperimentalForeignApi::class)
+@OptIn(ExperimentalForeignApi::class)
 internal actual fun ktor_recvfrom(
     __fd: Int,
     __buf: CValuesRef<ByteVar>?,
diff --git a/ktor-network/darwin/src/io/ktor/network/util/SocketUtils.darwin.kt b/ktor-network/darwin/src/io/ktor/network/util/SocketUtils.darwin.kt
index 84fafce9473..ecae8d694fe 100644
--- a/ktor-network/darwin/src/io/ktor/network/util/SocketUtils.darwin.kt
+++ b/ktor-network/darwin/src/io/ktor/network/util/SocketUtils.darwin.kt
@@ -1,6 +1,9 @@
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/ios/src/io/ktor/network/util/SocketUtilsIos.kt b/ktor-network/ios/src/io/ktor/network/util/SocketUtilsIos.kt
index 56192cd3cb5..5a6a1e3caa3 100644
--- a/ktor-network/ios/src/io/ktor/network/util/SocketUtilsIos.kt
+++ b/ktor-network/ios/src/io/ktor/network/util/SocketUtilsIos.kt
@@ -1,6 +1,9 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/jvm/src/io/ktor/network/selector/JvmSelector.kt b/ktor-network/jvm/src/io/ktor/network/selector/JvmSelector.kt
index 17f88b51970..9b9723de242 100644
--- a/ktor-network/jvm/src/io/ktor/network/selector/JvmSelector.kt
+++ b/ktor-network/jvm/src/io/ktor/network/selector/JvmSelector.kt
@@ -1,4 +1,7 @@
-// ktlint-disable filename
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.selector
 
 import kotlinx.coroutines.*
diff --git a/ktor-network/jvm/src/io/ktor/network/selector/LockFreeMPSCQueue.kt b/ktor-network/jvm/src/io/ktor/network/selector/LockFreeMPSCQueue.kt
index 56c6638738d..0d1e6093664 100644
--- a/ktor-network/jvm/src/io/ktor/network/selector/LockFreeMPSCQueue.kt
+++ b/ktor-network/jvm/src/io/ktor/network/selector/LockFreeMPSCQueue.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.network.selector
 
 import kotlinx.atomicfu.*
@@ -20,34 +21,34 @@ private typealias Core<E> = LockFreeMPSCQueueCore<E>
  * ```
  */
 internal class LockFreeMPSCQueue<E : Any> {
-    private val _cur = atomic(Core<E>(Core.INITIAL_CAPACITY))
+    private val curRef = atomic(Core<E>(Core.INITIAL_CAPACITY))
 
     // Note: it is not atomic w.r.t. remove operation (remove can transiently fail when isEmpty is false)
-    val isEmpty: Boolean get() = _cur.value.isEmpty
+    val isEmpty: Boolean get() = curRef.value.isEmpty
 
     fun close() {
-        _cur.loop { cur ->
+        curRef.loop { cur ->
             if (cur.close()) return // closed this copy
-            _cur.compareAndSet(cur, cur.next()) // move to next
+            curRef.compareAndSet(cur, cur.next()) // move to next
         }
     }
 
     fun addLast(element: E): Boolean {
-        _cur.loop { cur ->
+        curRef.loop { cur ->
             when (cur.addLast(element)) {
                 Core.ADD_SUCCESS -> return true
                 Core.ADD_CLOSED -> return false
-                Core.ADD_FROZEN -> _cur.compareAndSet(cur, cur.next()) // move to next
+                Core.ADD_FROZEN -> curRef.compareAndSet(cur, cur.next()) // move to next
             }
         }
     }
 
     @Suppress("UNCHECKED_CAST")
     fun removeFirstOrNull(): E? {
-        _cur.loop { cur ->
+        curRef.loop { cur ->
             val result = cur.removeFirstOrNull()
             if (result !== Core.REMOVE_FROZEN) return result as E?
-            _cur.compareAndSet(cur, cur.next())
+            curRef.compareAndSet(cur, cur.next())
         }
     }
 }
@@ -60,8 +61,8 @@ internal class LockFreeMPSCQueue<E : Any> {
  */
 private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     private val mask = capacity - 1
-    private val _next = atomic<Core<E>?>(null)
-    private val _state = atomic(0L)
+    private val nextRef = atomic<Core<E>?>(null)
+    private val stateRef = atomic(0L)
     private val array = AtomicReferenceArray<Any?>(capacity)
 
     init {
@@ -70,10 +71,10 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     }
 
     // Note: it is not atomic w.r.t. remove operation (remove can transiently fail when isEmpty is false)
-    val isEmpty: Boolean get() = _state.value.withState { head, tail -> head == tail }
+    val isEmpty: Boolean get() = stateRef.value.withState { head, tail -> head == tail }
 
     fun close(): Boolean {
-        _state.update { state ->
+        stateRef.update { state ->
             if (state and CLOSED_MASK != 0L) return true // ok - already closed
             if (state and FROZEN_MASK != 0L) return false // frozen -- try next
             state or CLOSED_MASK // try set closed bit
@@ -83,20 +84,20 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
 
     // ADD_CLOSED | ADD_FROZEN | ADD_SUCCESS
     fun addLast(element: E): Int {
-        _state.loop { state ->
+        stateRef.loop { state ->
             if (state and (FROZEN_MASK or CLOSED_MASK) != 0L) return state.addFailReason() // cannot add
             state.withState { head, tail ->
                 // there could be one REMOVE element beyond head that we cannot stump up,
                 // so we check for full queue with an extra margin of one element
                 if ((tail + 2) and mask == head and mask) return ADD_FROZEN // overfull, so do freeze & copy
                 val newTail = (tail + 1) and MAX_CAPACITY_MASK
-                if (_state.compareAndSet(state, state.updateTail(newTail))) {
+                if (stateRef.compareAndSet(state, state.updateTail(newTail))) {
                     // successfully added
                     array[tail and mask] = element
                     // could have been frozen & copied before this item was set -- correct it by filling placeholder
                     var cur = this
                     while (true) {
-                        if (cur._state.value and FROZEN_MASK == 0L) break // all fine -- not frozen yet
+                        if (cur.stateRef.value and FROZEN_MASK == 0L) break // all fine -- not frozen yet
                         cur = cur.next().fillPlaceholder(tail, element) ?: break
                     }
                     return ADD_SUCCESS // added successfully
@@ -129,7 +130,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     // SINGLE CONSUMER
     // REMOVE_FROZEN | null (EMPTY) | E (SUCCESS)
     fun removeFirstOrNull(): Any? {
-        _state.loop { state ->
+        stateRef.loop { state ->
             if (state and FROZEN_MASK != 0L) return REMOVE_FROZEN // frozen -- cannot modify
             state.withState { head, tail ->
                 if ((tail and mask) == (head and mask)) return null // empty
@@ -138,7 +139,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
                 if (element is Placeholder) return null // same story -- consider it not added yet
                 // we cannot put null into array here, because copying thread could replace it with Placeholder and that is a disaster
                 val newHead = (head + 1) and MAX_CAPACITY_MASK
-                if (_state.compareAndSet(state, state.updateHead(newHead))) {
+                if (stateRef.compareAndSet(state, state.updateHead(newHead))) {
                     array[head and mask] = null // now can safely put null (state was updated)
                     return element // successfully removed in fast-path
                 }
@@ -153,14 +154,14 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     }
 
     private fun removeSlowPath(oldHead: Int, newHead: Int): Core<E>? {
-        _state.loop { state ->
+        stateRef.loop { state ->
             state.withState { head, _ ->
                 check(head == oldHead) { "This queue can have only one consumer" }
                 if (state and FROZEN_MASK != 0L) {
                     // state was already frozen, so removed element was copied to next
                     return next() // continue to correct head in next
                 }
-                if (_state.compareAndSet(state, state.updateHead(newHead))) {
+                if (stateRef.compareAndSet(state, state.updateHead(newHead))) {
                     array[head and mask] = null // now can safely put null (state was updated)
                     return null
                 }
@@ -171,15 +172,15 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     fun next(): LockFreeMPSCQueueCore<E> = allocateOrGetNextCopy(markFrozen())
 
     private fun markFrozen(): Long =
-        _state.updateAndGet { state ->
+        stateRef.updateAndGet { state ->
             if (state and FROZEN_MASK != 0L) return state // already marked
             state or FROZEN_MASK
         }
 
     private fun allocateOrGetNextCopy(state: Long): Core<E> {
-        _next.loop { next ->
+        nextRef.loop { next ->
             if (next != null) return next // already allocated & copied
-            _next.compareAndSet(null, allocateNextCopy(state))
+            nextRef.compareAndSet(null, allocateNextCopy(state))
         }
     }
 
@@ -192,7 +193,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
                 next.array[index and next.mask] = array[index and mask] ?: Placeholder(index)
                 index++
             }
-            next._state.value = state wo FROZEN_MASK
+            next.stateRef.value = state wo FROZEN_MASK
         }
         return next
     }
diff --git a/ktor-network/jvm/src/io/ktor/network/selector/SelectableJvm.kt b/ktor-network/jvm/src/io/ktor/network/selector/SelectableJvm.kt
index 6a43975defc..b76375228a9 100644
--- a/ktor-network/jvm/src/io/ktor/network/selector/SelectableJvm.kt
+++ b/ktor-network/jvm/src/io/ktor/network/selector/SelectableJvm.kt
@@ -1,4 +1,7 @@
-// ktlint-disable filename
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.selector
 
 import kotlinx.atomicfu.*
diff --git a/ktor-network/jvm/src/io/ktor/network/sockets/SocketAddressJvm.kt b/ktor-network/jvm/src/io/ktor/network/sockets/SocketAddressJvm.kt
index ae11b7bbf72..e7dd82ab464 100644
--- a/ktor-network/jvm/src/io/ktor/network/sockets/SocketAddressJvm.kt
+++ b/ktor-network/jvm/src/io/ktor/network/sockets/SocketAddressJvm.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.network.sockets
@@ -56,7 +56,8 @@ public actual class InetSocketAddress internal constructor(
 }
 
 public actual class UnixSocketAddress internal constructor(
-    override val address: java.net.SocketAddress // actually: java.net.UnixDomainSocketAddress
+    // actually: java.net.UnixDomainSocketAddress
+    override val address: java.net.SocketAddress
 ) : SocketAddress() {
 
     init {
diff --git a/ktor-network/jvmAndPosix/src/io/ktor/network/selector/Selectable.kt b/ktor-network/jvmAndPosix/src/io/ktor/network/selector/Selectable.kt
index c3a9024ee26..5d035b5c8ae 100644
--- a/ktor-network/jvmAndPosix/src/io/ktor/network/selector/Selectable.kt
+++ b/ktor-network/jvmAndPosix/src/io/ktor/network/selector/Selectable.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.selector
 
 import kotlinx.coroutines.*
diff --git a/ktor-network/jvmAndPosix/src/io/ktor/network/selector/SelectorManagerCommon.kt b/ktor-network/jvmAndPosix/src/io/ktor/network/selector/SelectorManagerCommon.kt
index 72790f980ae..fd4984bda25 100644
--- a/ktor-network/jvmAndPosix/src/io/ktor/network/selector/SelectorManagerCommon.kt
+++ b/ktor-network/jvmAndPosix/src/io/ktor/network/selector/SelectorManagerCommon.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.selector
 
 import io.ktor.utils.io.core.*
@@ -39,7 +43,10 @@ public expect interface SelectorManager : CoroutineScope, Closeable {
  * Select interest kind.
  */
 public expect enum class SelectInterest {
-    READ, WRITE, ACCEPT, CONNECT;
+    READ,
+    WRITE,
+    ACCEPT,
+    CONNECT;
 
     public companion object {
         public val AllInterests: Array<SelectInterest>
diff --git a/ktor-network/jvmAndPosix/src/io/ktor/network/sockets/Builders.kt b/ktor-network/jvmAndPosix/src/io/ktor/network/sockets/Builders.kt
index bc80354e9b0..81c4a1306c1 100644
--- a/ktor-network/jvmAndPosix/src/io/ktor/network/sockets/Builders.kt
+++ b/ktor-network/jvmAndPosix/src/io/ktor/network/sockets/Builders.kt
@@ -1,6 +1,7 @@
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.network.sockets
 
 import io.ktor.network.selector.*
diff --git a/ktor-network/ktor-network-tls/jvm/src/io/ktor/network/tls/Hashes.kt b/ktor-network/ktor-network-tls/jvm/src/io/ktor/network/tls/Hashes.kt
index 570edb438b4..e02853b133a 100644
--- a/ktor-network/ktor-network-tls/jvm/src/io/ktor/network/tls/Hashes.kt
+++ b/ktor-network/ktor-network-tls/jvm/src/io/ktor/network/tls/Hashes.kt
@@ -1,7 +1,9 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.tls
 
 import javax.crypto.*
diff --git a/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/ConnectionTest.kt b/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/ConnectionTest.kt
index f214c1db900..6bb77794df8 100644
--- a/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/ConnectionTest.kt
+++ b/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/ConnectionTest.kt
@@ -1,8 +1,7 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable experimental:argument-list-wrapping
 package io.ktor.network.tls
 
 import io.ktor.network.selector.*
@@ -25,8 +24,6 @@ import java.security.*
 import java.security.cert.*
 import javax.net.ssl.*
 import kotlin.test.*
-import kotlin.test.Ignore
-import kotlin.test.Test
 
 @Suppress("UNCHECKED_CAST")
 @CoroutinesTimeout(20_000)
diff --git a/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/HostnameUtilsTest.kt b/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/HostnameUtilsTest.kt
index dfb6fc2e87d..d668fa0593d 100644
--- a/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/HostnameUtilsTest.kt
+++ b/ktor-network/ktor-network-tls/jvm/test/io/ktor/network/tls/HostnameUtilsTest.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.tls
 
 import io.mockk.*
diff --git a/ktor-network/ktor-network-tls/jvmAndPosix/src/io/ktor/network/tls/extensions/SignatureAlgorithm.kt b/ktor-network/ktor-network-tls/jvmAndPosix/src/io/ktor/network/tls/extensions/SignatureAlgorithm.kt
index d1a700860fe..d170233d516 100644
--- a/ktor-network/ktor-network-tls/jvmAndPosix/src/io/ktor/network/tls/extensions/SignatureAlgorithm.kt
+++ b/ktor-network/ktor-network-tls/jvmAndPosix/src/io/ktor/network/tls/extensions/SignatureAlgorithm.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.network.tls.extensions
 
@@ -8,16 +8,13 @@ import io.ktor.network.tls.*
 import io.ktor.utils.io.core.*
 import kotlinx.io.*
 
-/**
- * See also: [https://www.iana.org/assignments/tls-parameters/tls-parameters.txt]
- */
+// See also: https://www.iana.org/assignments/tls-parameters/tls-parameters.txt
 
 /**
  * Hash algorithms
  * @property code numeric hash algorithm code
  * @property openSSLName is a name used in openssl for this algorithm
  */
-
 public enum class HashAlgorithm(public val code: Byte, public val openSSLName: String, public val macName: String) {
     NONE(0, "", ""),
     MD5(1, "MD5", "HmacMD5"),
@@ -43,7 +40,6 @@ public enum class HashAlgorithm(public val code: Byte, public val openSSLName: S
  * Signature algorithms
  * @property code numeric algorithm codes
  */
-
 public enum class SignatureAlgorithm(public val code: Byte) {
     ANON(0),
     RSA(1),
@@ -69,7 +65,6 @@ public enum class SignatureAlgorithm(public val code: Byte) {
  * @property sign algorithm.
  * @property oid [object identifier](https://en.wikipedia.org/wiki/Object_identifier).
  */
-
 public data class HashAndSign(val hash: HashAlgorithm, val sign: SignatureAlgorithm, val oid: OID? = null) {
     /**
      * String representation of this algorithms pair
@@ -79,7 +74,7 @@ public data class HashAndSign(val hash: HashAlgorithm, val sign: SignatureAlgori
     public companion object
 }
 
-@Suppress("CONFLICTING_OVERLOADS")
+@Suppress("CONFLICTING_OVERLOADS", "ktlint:standard:function-naming")
 internal fun HashAndSign(hashValue: Byte, signValue: Byte, oidValue: String? = null): HashAndSign? {
     val hash = HashAlgorithm.byCode(hashValue)
     val sign = SignatureAlgorithm.byCode(signValue) ?: return null
@@ -91,7 +86,6 @@ internal fun HashAndSign(hashValue: Byte, signValue: Byte, oidValue: String? = n
 /**
  * List of supported combinations of hash and signature algorithms
  */
-
 public val SupportedSignatureAlgorithms: List<HashAndSign> = listOf(
     HashAndSign(HashAlgorithm.SHA384, SignatureAlgorithm.ECDSA, OID.ECDSAwithSHA384Encryption),
     HashAndSign(HashAlgorithm.SHA256, SignatureAlgorithm.ECDSA, OID.ECDSAwithSHA256Encryption),
diff --git a/ktor-network/ktor-network-tls/ktor-network-tls-certificates/jvm/src/io/ktor/network/tls/certificates/Certificates.kt b/ktor-network/ktor-network-tls/ktor-network-tls-certificates/jvm/src/io/ktor/network/tls/certificates/Certificates.kt
index 08d306311be..5dbca80f59a 100644
--- a/ktor-network/ktor-network-tls/ktor-network-tls-certificates/jvm/src/io/ktor/network/tls/certificates/Certificates.kt
+++ b/ktor-network/ktor-network-tls/ktor-network-tls-certificates/jvm/src/io/ktor/network/tls/certificates/Certificates.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.network.tls.certificates
@@ -8,8 +8,6 @@ import io.ktor.network.tls.*
 import io.ktor.network.tls.extensions.*
 import io.ktor.utils.io.core.*
 import kotlinx.io.*
-import kotlinx.io.Sink
-import kotlinx.io.writeUByte
 import java.io.*
 import java.math.*
 import java.net.*
@@ -115,7 +113,9 @@ internal fun generateX509Certificate(
 }
 
 public enum class KeyType {
-    CA, Server, Client
+    CA,
+    Server,
+    Client,
 }
 
 /**
diff --git a/ktor-network/ktor-network-tls/posix/src/io/ktor/network/tls/TLSConfigNative.kt b/ktor-network/ktor-network-tls/posix/src/io/ktor/network/tls/TLSConfigNative.kt
index f3bf682429c..3b7954fd388 100644
--- a/ktor-network/ktor-network-tls/posix/src/io/ktor/network/tls/TLSConfigNative.kt
+++ b/ktor-network/ktor-network-tls/posix/src/io/ktor/network/tls/TLSConfigNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.network.tls
diff --git a/ktor-network/linux/src/io/ktor/network/util/SocketUtils.linux.kt b/ktor-network/linux/src/io/ktor/network/util/SocketUtils.linux.kt
index 4830261db76..10fb68d58ce 100644
--- a/ktor-network/linux/src/io/ktor/network/util/SocketUtils.linux.kt
+++ b/ktor-network/linux/src/io/ktor/network/util/SocketUtils.linux.kt
@@ -2,6 +2,8 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/macos/src/io/ktor/network/util/SocketUtilsMacos.kt b/ktor-network/macos/src/io/ktor/network/util/SocketUtilsMacos.kt
index a3c439ee97d..2e1004d6730 100644
--- a/ktor-network/macos/src/io/ktor/network/util/SocketUtilsMacos.kt
+++ b/ktor-network/macos/src/io/ktor/network/util/SocketUtilsMacos.kt
@@ -1,6 +1,9 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/nix/src/io/ktor/network/selector/SelectUtilsNix.kt b/ktor-network/nix/src/io/ktor/network/selector/SelectUtilsNix.kt
index 0b4874a47f1..6c4bafa3293 100644
--- a/ktor-network/nix/src/io/ktor/network/selector/SelectUtilsNix.kt
+++ b/ktor-network/nix/src/io/ktor/network/selector/SelectUtilsNix.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.network.selector
 
 import io.ktor.network.interop.*
diff --git a/ktor-network/nix/src/io/ktor/network/util/SocketUtils.nix.kt b/ktor-network/nix/src/io/ktor/network/util/SocketUtils.nix.kt
index fbce018be44..4730c749b7c 100644
--- a/ktor-network/nix/src/io/ktor/network/util/SocketUtils.nix.kt
+++ b/ktor-network/nix/src/io/ktor/network/util/SocketUtils.nix.kt
@@ -2,6 +2,8 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/posix/src/io/ktor/network/selector/SelectUtils.kt b/ktor-network/posix/src/io/ktor/network/selector/SelectUtils.kt
index 6cc52efe37e..65961afcdf3 100644
--- a/ktor-network/posix/src/io/ktor/network/selector/SelectUtils.kt
+++ b/ktor-network/posix/src/io/ktor/network/selector/SelectUtils.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.network.selector
 
 import kotlinx.coroutines.*
diff --git a/ktor-network/posix/src/io/ktor/network/selector/SelectorManager.kt b/ktor-network/posix/src/io/ktor/network/selector/SelectorManager.kt
index 55746637530..55b1ed24050 100644
--- a/ktor-network/posix/src/io/ktor/network/selector/SelectorManager.kt
+++ b/ktor-network/posix/src/io/ktor/network/selector/SelectorManager.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.network.selector
 
@@ -40,7 +40,10 @@ public actual interface SelectorManager : CoroutineScope, Closeable {
  */
 @Suppress("KDocMissingDocumentation", "NO_EXPLICIT_VISIBILITY_IN_API_MODE_WARNING")
 public actual enum class SelectInterest {
-    READ, WRITE, ACCEPT, CONNECT;
+    READ,
+    WRITE,
+    ACCEPT,
+    CONNECT;
 
     public actual companion object {
         public actual val AllInterests: Array<SelectInterest>
diff --git a/ktor-network/posix/src/io/ktor/network/selector/WorkerSelectorManager.kt b/ktor-network/posix/src/io/ktor/network/selector/WorkerSelectorManager.kt
index fe7c2cf4360..7f36cbac0e2 100644
--- a/ktor-network/posix/src/io/ktor/network/selector/WorkerSelectorManager.kt
+++ b/ktor-network/posix/src/io/ktor/network/selector/WorkerSelectorManager.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.selector
 
 import kotlinx.coroutines.*
diff --git a/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt b/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt
index 77dd5379cbb..6f175e6e883 100644
--- a/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt
+++ b/ktor-network/posix/src/io/ktor/network/sockets/DatagramSocketNative.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.network.sockets
@@ -23,12 +23,12 @@ internal class DatagramSocketNative(
     private val remote: SocketAddress?,
     parent: CoroutineContext = EmptyCoroutineContext
 ) : BoundDatagramSocket, ConnectedDatagramSocket, CoroutineScope {
-    private val _context: CompletableJob = Job(parent[Job])
+    private val context: CompletableJob = Job(parent[Job])
 
-    override val coroutineContext: CoroutineContext = parent + Dispatchers.Unconfined + _context
+    override val coroutineContext: CoroutineContext = parent + Dispatchers.Unconfined + context
 
     override val socketContext: Job
-        get() = _context
+        get() = context
 
     override val localAddress: SocketAddress
         get() = getLocalAddress(descriptor).toSocketAddress()
@@ -61,8 +61,8 @@ internal class DatagramSocketNative(
 
     override fun close() {
         receiver.cancel()
-        _context.complete()
-        _context.invokeOnCompletion {
+        context.complete()
+        context.invokeOnCompletion {
             ktor_shutdown(descriptor, ShutdownCommands.Both)
             // Descriptor is closed by the selector manager
             selector.notifyClosed(selectable)
diff --git a/ktor-network/posix/src/io/ktor/network/sockets/SocketAddressNative.kt b/ktor-network/posix/src/io/ktor/network/sockets/SocketAddressNative.kt
index 9fef0d9e069..366d00b31e7 100644
--- a/ktor-network/posix/src/io/ktor/network/sockets/SocketAddressNative.kt
+++ b/ktor-network/posix/src/io/ktor/network/sockets/SocketAddressNative.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.network.sockets
 
 public actual sealed class SocketAddress
diff --git a/ktor-network/posix/src/io/ktor/network/sockets/TCPSocketNative.kt b/ktor-network/posix/src/io/ktor/network/sockets/TCPSocketNative.kt
index f4bad145d32..50895a2a291 100644
--- a/ktor-network/posix/src/io/ktor/network/sockets/TCPSocketNative.kt
+++ b/ktor-network/posix/src/io/ktor/network/sockets/TCPSocketNative.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.network.sockets
 
@@ -18,12 +18,12 @@ internal class TCPSocketNative(
     override val localAddress: SocketAddress,
     parent: CoroutineContext = EmptyCoroutineContext
 ) : Socket, CoroutineScope {
-    private val _context: CompletableJob = Job(parent[Job])
+    private val context: CompletableJob = Job(parent[Job])
 
-    override val coroutineContext: CoroutineContext = parent + Dispatchers.Unconfined + _context
+    override val coroutineContext: CoroutineContext = parent + Dispatchers.Unconfined + context
 
     override val socketContext: Job
-        get() = _context
+        get() = context
 
     override fun attachForReading(channel: ByteChannel): WriterJob =
         attachForReadingImpl(channel, descriptor, selectable, selector)
@@ -32,8 +32,8 @@ internal class TCPSocketNative(
         attachForWritingImpl(channel, descriptor, selectable, selector)
 
     override fun close() {
-        _context.complete()
-        _context.invokeOnCompletion {
+        context.complete()
+        context.invokeOnCompletion {
             ktor_shutdown(descriptor, ShutdownCommands.Both)
             // Descriptor is closed by the selector manager
             selector.notifyClosed(selectable)
diff --git a/ktor-network/posix/src/io/ktor/network/util/SocketUtils.kt b/ktor-network/posix/src/io/ktor/network/util/SocketUtils.kt
index afe694a670b..b62ac1c2b99 100644
--- a/ktor-network/posix/src/io/ktor/network/util/SocketUtils.kt
+++ b/ktor-network/posix/src/io/ktor/network/util/SocketUtils.kt
@@ -1,7 +1,9 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import io.ktor.utils.io.bits.*
diff --git a/ktor-network/tvos/src/io/ktor/network/util/SocketUtilsTvos.kt b/ktor-network/tvos/src/io/ktor/network/util/SocketUtilsTvos.kt
index 33725ad7923..1290cf499eb 100644
--- a/ktor-network/tvos/src/io/ktor/network/util/SocketUtilsTvos.kt
+++ b/ktor-network/tvos/src/io/ktor/network/util/SocketUtilsTvos.kt
@@ -1,6 +1,9 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/watchos/src/io/ktor/network/util/SocketUtilsWatchos.kt b/ktor-network/watchos/src/io/ktor/network/util/SocketUtilsWatchos.kt
index 97f84b0a1a8..73925d11c41 100644
--- a/ktor-network/watchos/src/io/ktor/network/util/SocketUtilsWatchos.kt
+++ b/ktor-network/watchos/src/io/ktor/network/util/SocketUtilsWatchos.kt
@@ -1,6 +1,9 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-network/windows/src/io/ktor/network/util/SocketUtilsWindows.kt b/ktor-network/windows/src/io/ktor/network/util/SocketUtilsWindows.kt
index 01babff7ac9..df65f333fbd 100644
--- a/ktor-network/windows/src/io/ktor/network/util/SocketUtilsWindows.kt
+++ b/ktor-network/windows/src/io/ktor/network/util/SocketUtilsWindows.kt
@@ -2,6 +2,8 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+@file:Suppress("FunctionName")
+
 package io.ktor.network.util
 
 import kotlinx.cinterop.*
diff --git a/ktor-server/common/src/Stub.kt b/ktor-server/common/src/Stub.kt
index 1525c247cbe..d0706de3a1a 100644
--- a/ktor-server/common/src/Stub.kt
+++ b/ktor-server/common/src/Stub.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server
 
 internal fun stub() {
diff --git a/ktor-server/ktor-server-cio/jvm/test/io/ktor/tests/server/cio/IntegrationTest.kt b/ktor-server/ktor-server-cio/jvm/test/io/ktor/tests/server/cio/IntegrationTest.kt
index 925c6e7cfac..e8d7b991d39 100644
--- a/ktor-server/ktor-server-cio/jvm/test/io/ktor/tests/server/cio/IntegrationTest.kt
+++ b/ktor-server/ktor-server-cio/jvm/test/io/ktor/tests/server/cio/IntegrationTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.server.cio
@@ -38,7 +38,10 @@ class IntegrationTest {
         s.invokeOnCompletion { t ->
             if (t != null) {
                 server.completeExceptionally(t)
-            } else server.complete(@OptIn(ExperimentalCoroutinesApi::class) s.getCompleted())
+            } else {
+                @OptIn(ExperimentalCoroutinesApi::class)
+                server.complete(s.getCompleted())
+            }
         }
 
         j.invokeOnCompletion {
diff --git a/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt b/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
index 678d9dabd11..7ab47ceed65 100644
--- a/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
+++ b/ktor-server/ktor-server-cio/jvmAndPosix/src/io/ktor/server/cio/backend/ServerPipeline.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.cio.backend
@@ -12,11 +12,10 @@ import io.ktor.util.cio.*
 import io.ktor.utils.io.*
 import io.ktor.utils.io.charsets.*
 import io.ktor.utils.io.core.*
-import io.ktor.utils.io.errors.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.CancellationException
 import kotlinx.coroutines.channels.*
-import kotlinx.io.IOException
+import kotlinx.io.*
 import kotlin.time.*
 
 /**
@@ -64,7 +63,8 @@ public fun CoroutineScope.startServerConnectionPipeline(
                 throw io
             } catch (cancelled: CancellationException) {
                 throw cancelled
-            } catch (parseFailed: Throwable) { // try to write 400 Bad Request
+            } catch (parseFailed: Throwable) {
+                // try to write 400 Bad Request
                 respondBadRequest(actorChannel)
                 break // end pipeline loop
             }
@@ -176,7 +176,8 @@ public fun CoroutineScope.startServerConnectionPipeline(
 
             if (isLastHttpRequest(version, connectionOptions)) break
         }
-    } catch (cause: IOException) { // already handled
+    } catch (cause: IOException) {
+        // already handled
         coroutineContext.cancel()
     } finally {
         actorChannel.close()
diff --git a/ktor-server/ktor-server-cio/jvmAndPosix/test/io/ktor/tests/server/cio/CIOEngineTest.kt b/ktor-server/ktor-server-cio/jvmAndPosix/test/io/ktor/tests/server/cio/CIOEngineTest.kt
index 32ee17291db..c2072804580 100644
--- a/ktor-server/ktor-server-cio/jvmAndPosix/test/io/ktor/tests/server/cio/CIOEngineTest.kt
+++ b/ktor-server/ktor-server-cio/jvmAndPosix/test/io/ktor/tests/server/cio/CIOEngineTest.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.server.cio
diff --git a/ktor-server/ktor-server-config-yaml/jvm/src/io/ktor/server/config/yaml/YamlConfigJvm.kt b/ktor-server/ktor-server-config-yaml/jvm/src/io/ktor/server/config/yaml/YamlConfigJvm.kt
index a86aaf08ff5..cb2b8f7945b 100644
--- a/ktor-server/ktor-server-config-yaml/jvm/src/io/ktor/server/config/yaml/YamlConfigJvm.kt
+++ b/ktor-server/ktor-server-config-yaml/jvm/src/io/ktor/server/config/yaml/YamlConfigJvm.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.config.yaml
@@ -13,6 +13,7 @@ import java.io.*
  * On JVM, loads a configuration from application resources, if exist; otherwise, reads a configuration from a file.
  * On Native, always reads a configuration from a file.
  */
+@Suppress("ktlint:standard:function-naming")
 public actual fun YamlConfig(path: String?): YamlConfig? {
     val resolvedPath = when {
         path == null -> DEFAULT_YAML_FILENAME
diff --git a/ktor-server/ktor-server-config-yaml/jvmAndPosix/src/io/ktor/server/config/yaml/YamlConfig.kt b/ktor-server/ktor-server-config-yaml/jvmAndPosix/src/io/ktor/server/config/yaml/YamlConfig.kt
index 15e38de624c..33106c618b3 100644
--- a/ktor-server/ktor-server-config-yaml/jvmAndPosix/src/io/ktor/server/config/yaml/YamlConfig.kt
+++ b/ktor-server/ktor-server-config-yaml/jvmAndPosix/src/io/ktor/server/config/yaml/YamlConfig.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.config.yaml
 
 import io.ktor.server.config.*
@@ -27,6 +28,7 @@ public class YamlConfigLoader : ConfigLoader {
  * On JVM, loads a configuration from application resources, if exists; otherwise, reads a configuration from a file.
  * On Native, always reads a configuration from a file.
  */
+@Suppress("ktlint:standard:function-naming")
 public expect fun YamlConfig(path: String?): YamlConfig?
 
 /**
diff --git a/ktor-server/ktor-server-config-yaml/posix/src/io/ktor/server/config/yaml/YamlConfigNix.kt b/ktor-server/ktor-server-config-yaml/posix/src/io/ktor/server/config/yaml/YamlConfigNix.kt
index 642eeb3f657..a8216697bef 100644
--- a/ktor-server/ktor-server-config-yaml/posix/src/io/ktor/server/config/yaml/YamlConfigNix.kt
+++ b/ktor-server/ktor-server-config-yaml/posix/src/io/ktor/server/config/yaml/YamlConfigNix.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.config.yaml
@@ -16,7 +16,7 @@ private fun init() {
     addConfigLoader(YamlConfigLoader())
 }
 
-@Suppress("DEPRECATION")
+@Suppress("DEPRECATION", "unused")
 @OptIn(ExperimentalStdlibApi::class)
 @EagerInitialization
 private val initHook = init()
@@ -26,6 +26,7 @@ private val initHook = init()
  * On JVM, loads a configuration from application resources, if exist; otherwise, reads a configuration from a file.
  * On Native, always reads a configuration from a file.
  */
+@Suppress("ktlint:standard:function-naming")
 public actual fun YamlConfig(path: String?): YamlConfig? {
     val resolvedPath = when {
         path != null && path.endsWith(".yaml") -> path
diff --git a/ktor-server/ktor-server-core/common/src/io/ktor/server/application/CommonApplicationEnvironment.kt b/ktor-server/ktor-server-core/common/src/io/ktor/server/application/CommonApplicationEnvironment.kt
index 7660479dc70..f2fb3fd3805 100644
--- a/ktor-server/ktor-server-core/common/src/io/ktor/server/application/CommonApplicationEnvironment.kt
+++ b/ktor-server/ktor-server-core/common/src/io/ktor/server/application/CommonApplicationEnvironment.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.server.application
 
diff --git a/ktor-server/ktor-server-core/common/src/io/ktor/server/application/KtorCallContexts.kt b/ktor-server/ktor-server-core/common/src/io/ktor/server/application/KtorCallContexts.kt
index 606b1c85d63..641478b9c1f 100644
--- a/ktor-server/ktor-server-core/common/src/io/ktor/server/application/KtorCallContexts.kt
+++ b/ktor-server/ktor-server-core/common/src/io/ktor/server/application/KtorCallContexts.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.application
 
 import io.ktor.server.response.*
diff --git a/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/BaseApplicationResponse.kt b/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/BaseApplicationResponse.kt
index c5eb0e69d2c..b5c25dc2698 100644
--- a/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/BaseApplicationResponse.kt
+++ b/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/BaseApplicationResponse.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
@@ -10,7 +9,6 @@ import io.ktor.http.content.*
 import io.ktor.server.application.*
 import io.ktor.server.engine.internal.*
 import io.ktor.server.http.*
-import io.ktor.server.plugins.*
 import io.ktor.server.response.*
 import io.ktor.util.*
 import io.ktor.util.cio.*
@@ -21,7 +19,7 @@ import kotlinx.coroutines.*
 public abstract class BaseApplicationResponse(
     final override val call: PipelineCall
 ) : PipelineResponse {
-    private var _status: HttpStatusCode? = null
+    private var status: HttpStatusCode? = null
 
     override val isCommitted: Boolean
         get() = responded
@@ -33,9 +31,9 @@ public abstract class BaseApplicationResponse(
         ResponseCookies(this)
     }
 
-    override fun status(): HttpStatusCode? = _status
+    override fun status(): HttpStatusCode? = status
     override fun status(value: HttpStatusCode) {
-        _status = value
+        status = value
         setStatus(value)
     }
 
diff --git a/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/EmbeddedServer.kt b/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/EmbeddedServer.kt
index 36138c1f71c..8ff29daec65 100644
--- a/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/EmbeddedServer.kt
+++ b/ktor-server/ktor-server-core/common/src/io/ktor/server/engine/EmbeddedServer.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
@@ -78,7 +78,8 @@ public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Conf
 /**
  * Creates an embedded server with the given [factory], listening on [host]:[port].
  */
-public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Configuration> CoroutineScope.embeddedServer( // ktlint-disable max-line-length
+@Suppress("ktlint:standard:max-line-length")
+public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Configuration> CoroutineScope.embeddedServer(
     factory: ApplicationEngineFactory<TEngine, TConfiguration>,
     port: Int = 80,
     host: String = "0.0.0.0",
@@ -104,7 +105,8 @@ public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Conf
 /**
  * Creates an embedded server with the given [factory], listening on given [connectors].
  */
-public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Configuration> CoroutineScope.embeddedServer( // ktlint-disable max-line-length
+@Suppress("ktlint:standard:max-line-length")
+public fun <TEngine : ApplicationEngine, TConfiguration : ApplicationEngine.Configuration> CoroutineScope.embeddedServer(
     factory: ApplicationEngineFactory<TEngine, TConfiguration>,
     vararg connectors: EngineConnectorConfig = arrayOf(),
     watchPaths: List<String> = listOf(WORKING_DIRECTORY_PATH),
diff --git a/ktor-server/ktor-server-core/common/src/io/ktor/server/routing/RoutingResolveContext.kt b/ktor-server/ktor-server-core/common/src/io/ktor/server/routing/RoutingResolveContext.kt
index 3f638fcc923..8d26667ca37 100644
--- a/ktor-server/ktor-server-core/common/src/io/ktor/server/routing/RoutingResolveContext.kt
+++ b/ktor-server/ktor-server-core/common/src/io/ktor/server/routing/RoutingResolveContext.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.routing
@@ -187,7 +187,9 @@ public class RoutingResolveContext(
 
             val partQuality = if (part.quality == RouteSelectorEvaluation.qualityTransparent) {
                 RouteSelectorEvaluation.qualityConstant
-            } else part.quality
+            } else {
+                part.quality
+            }
 
             quality = minOf(quality, partQuality)
         }
diff --git a/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/application/ApplicationEnvironment.jsAndWasmShared.kt b/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/application/ApplicationEnvironment.jsAndWasmShared.kt
index bac01c336c8..15ec46cad12 100644
--- a/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/application/ApplicationEnvironment.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/application/ApplicationEnvironment.jsAndWasmShared.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.application
diff --git a/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/engine/ApplicationEngineEnvironment.jsAndWasmShared.kt b/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/engine/ApplicationEngineEnvironment.jsAndWasmShared.kt
index e72c097406e..e9f704e6b81 100644
--- a/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/engine/ApplicationEngineEnvironment.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-core/jsAndWasmShared/src/io/ktor/server/engine/ApplicationEngineEnvironment.jsAndWasmShared.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
diff --git a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/ApplicationEnvironmentJvm.kt b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/ApplicationEnvironmentJvm.kt
index d6d022d4788..58512371801 100644
--- a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/ApplicationEnvironmentJvm.kt
+++ b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/ApplicationEnvironmentJvm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
@@ -10,7 +9,6 @@ import io.ktor.server.application.*
 import io.ktor.server.config.*
 import io.ktor.utils.io.*
 import org.slf4j.*
-import kotlin.coroutines.*
 
 /**
  * Builder for configuring the environment of the Ktor application.
diff --git a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/EmbeddedServerJvm.kt b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/EmbeddedServerJvm.kt
index 0e8b31c045d..a97d8059040 100644
--- a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/EmbeddedServerJvm.kt
+++ b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/engine/EmbeddedServerJvm.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
@@ -44,7 +44,7 @@ actual constructor(
     public actual val engineConfig: TConfiguration = engineFactory.configuration(engineConfigBlock)
     private val applicationInstanceLock = ReentrantReadWriteLock()
     private var recreateInstance: Boolean = false
-    private var _applicationClassLoader: ClassLoader? = null
+    private var applicationClassLoader: ClassLoader? = null
     private var packageWatchKeys = emptyList<WatchKey>()
 
     private val configuredWatchPath = environment.config.propertyOrNull("ktor.deployment.watch")?.getList().orEmpty()
@@ -56,7 +56,7 @@ actual constructor(
 
     private val modulesNames: List<String> = configModulesNames
 
-    private var _applicationInstance: Application? = Application(
+    private var applicationInstance: Application? = Application(
         environment,
         rootConfig.developmentMode,
         rootConfig.rootPath,
@@ -88,13 +88,13 @@ actual constructor(
         applicationInstanceLock.write {
             destroyApplication()
             val (application, classLoader) = createApplication()
-            _applicationInstance = application
-            _applicationClassLoader = classLoader
+            applicationInstance = application
+            applicationClassLoader = classLoader
         }
     }
 
     private fun currentApplication(): Application = applicationInstanceLock.read {
-        val currentApplication = _applicationInstance ?: error("EmbeddedServer was stopped")
+        val currentApplication = applicationInstance ?: error("EmbeddedServer was stopped")
 
         if (!rootConfig.developmentMode) {
             return@read currentApplication
@@ -125,11 +125,11 @@ actual constructor(
         applicationInstanceLock.write {
             destroyApplication()
             val (application, classLoader) = createApplication()
-            _applicationInstance = application
-            _applicationClassLoader = classLoader
+            applicationInstance = application
+            applicationClassLoader = classLoader
         }
 
-        return@read _applicationInstance ?: error("EmbeddedServer was stopped")
+        return@read applicationInstance ?: error("EmbeddedServer was stopped")
     }
 
     private fun createApplication(): Pair<Application, ClassLoader> {
@@ -199,16 +199,16 @@ actual constructor(
     }
 
     private fun destroyApplication() {
-        val currentApplication = _applicationInstance
-        val applicationClassLoader = _applicationClassLoader
-        _applicationInstance = null
-        _applicationClassLoader = null
+        val currentApplication = applicationInstance
+        val currentApplicationClassLoader = applicationClassLoader
+        applicationInstance = null
+        applicationClassLoader = null
 
         if (currentApplication != null) {
             safeRaiseEvent(ApplicationStopping, currentApplication)
             try {
                 currentApplication.dispose()
-                (applicationClassLoader as? OverridingClassLoader)?.close()
+                (currentApplicationClassLoader as? OverridingClassLoader)?.close()
             } catch (e: Throwable) {
                 environment.log.error("Failed to destroy application instance.", e)
             }
@@ -277,8 +277,8 @@ actual constructor(
 
                 throw cause
             }
-            _applicationInstance = application
-            _applicationClassLoader = classLoader
+            applicationInstance = application
+            applicationClassLoader = classLoader
         }
 
         CoroutineScope(application.coroutineContext).launch {
@@ -313,7 +313,7 @@ actual constructor(
     }
 
     private fun instantiateAndConfigureApplication(currentClassLoader: ClassLoader): Application {
-        val newInstance = if (recreateInstance || _applicationInstance == null) {
+        val newInstance = if (recreateInstance || applicationInstance == null) {
             Application(
                 environment,
                 rootConfig.developmentMode,
@@ -324,7 +324,7 @@ actual constructor(
             )
         } else {
             recreateInstance = true
-            _applicationInstance!!
+            applicationInstance!!
         }
 
         safeRaiseEvent(ApplicationStarting, newInstance)
diff --git a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/http/content/LocalFileContent.kt b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/http/content/LocalFileContent.kt
index c441d452572..abf59447551 100644
--- a/ktor-server/ktor-server-core/jvm/src/io/ktor/server/http/content/LocalFileContent.kt
+++ b/ktor-server/ktor-server-core/jvm/src/io/ktor/server/http/content/LocalFileContent.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.http.content
@@ -53,6 +53,7 @@ public fun LocalFileContent(
 /**
  * Creates an instance of [LocalPathContent] for a path designated by [relativePath] in a [baseDir]
  */
+@Suppress("FunctionName")
 @Deprecated(
     "Use LocalPathContent instead",
     ReplaceWith("LocalPathContent(baseDir, relativePath, contentType)", "io.ktor.server.http.content.LocalPathContent")
diff --git a/ktor-server/ktor-server-core/posix/src/io/ktor/server/application/NixApplicationEnvironment.kt b/ktor-server/ktor-server-core/posix/src/io/ktor/server/application/NixApplicationEnvironment.kt
index bac01c336c8..15ec46cad12 100644
--- a/ktor-server/ktor-server-core/posix/src/io/ktor/server/application/NixApplicationEnvironment.kt
+++ b/ktor-server/ktor-server-core/posix/src/io/ktor/server/application/NixApplicationEnvironment.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.application
diff --git a/ktor-server/ktor-server-core/posix/src/io/ktor/server/engine/ApplicationEngineEnvironmentNix.kt b/ktor-server/ktor-server-core/posix/src/io/ktor/server/engine/ApplicationEngineEnvironmentNix.kt
index 34f065be23e..e9f704e6b81 100644
--- a/ktor-server/ktor-server-core/posix/src/io/ktor/server/engine/ApplicationEngineEnvironmentNix.kt
+++ b/ktor-server/ktor-server-core/posix/src/io/ktor/server/engine/ApplicationEngineEnvironmentNix.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.engine
@@ -10,7 +9,6 @@ import io.ktor.server.application.*
 import io.ktor.server.config.*
 import io.ktor.util.logging.*
 import io.ktor.utils.io.*
-import kotlin.coroutines.*
 
 /**
  * Engine environment configuration builder
diff --git a/ktor-server/ktor-server-host-common/common/src/Stub.kt b/ktor-server/ktor-server-host-common/common/src/Stub.kt
index 0d2c79738f9..c48ad0f3564 100644
--- a/ktor-server/ktor-server-host-common/common/src/Stub.kt
+++ b/ktor-server/ktor-server-host-common/common/src/Stub.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.host.common
 
 internal fun stub() {
diff --git a/ktor-server/ktor-server-jetty-jakarta/jvm/src/io/ktor/server/jetty/jakarta/Embedded.kt b/ktor-server/ktor-server-jetty-jakarta/jvm/src/io/ktor/server/jetty/jakarta/Embedded.kt
index c5f6f87d851..32b8f0003d4 100644
--- a/ktor-server/ktor-server-jetty-jakarta/jvm/src/io/ktor/server/jetty/jakarta/Embedded.kt
+++ b/ktor-server/ktor-server-jetty-jakarta/jvm/src/io/ktor/server/jetty/jakarta/Embedded.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.jetty.jakarta
diff --git a/ktor-server/ktor-server-jetty/jvm/src/io/ktor/server/jetty/Embedded.kt b/ktor-server/ktor-server-jetty/jvm/src/io/ktor/server/jetty/Embedded.kt
index 4471028735d..cb50a95e4b9 100644
--- a/ktor-server/ktor-server-jetty/jvm/src/io/ktor/server/jetty/Embedded.kt
+++ b/ktor-server/ktor-server-jetty/jvm/src/io/ktor/server/jetty/Embedded.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.jetty
diff --git a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/CIO.kt b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/CIO.kt
index 54af222a316..ef6e390f842 100644
--- a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/CIO.kt
+++ b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/CIO.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.netty
@@ -33,7 +33,9 @@ public suspend fun <T> Future<T>.suspendAwait(): T {
 private val wrappingErrorHandler = { t: Throwable, c: Continuation<*> ->
     if (t is IOException) {
         c.resumeWithException(ChannelWriteException("Write operation future failed", t))
-    } else c.resumeWithException(t)
+    } else {
+        c.resumeWithException(t)
+    }
 }
 
 /**
diff --git a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/Embedded.kt b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/Embedded.kt
index 7568d9cc53b..84d91913ec7 100644
--- a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/Embedded.kt
+++ b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/Embedded.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.netty
diff --git a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/NettyDirectEncoder.kt b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/NettyDirectEncoder.kt
index 0efe027fc05..21ac50dd28e 100644
--- a/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/NettyDirectEncoder.kt
+++ b/ktor-server/ktor-server-netty/jvm/src/io/ktor/server/netty/NettyDirectEncoder.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.netty
@@ -20,6 +20,8 @@ internal class NettyDirectEncoder : MessageToByteEncoder<HttpContent>() {
             Unpooled.EMPTY_BUFFER
         } else if (preferDirect) {
             ctx.alloc().ioBuffer(size)
-        } else ctx.alloc().heapBuffer(size)
+        } else {
+            ctx.alloc().heapBuffer(size)
+        }
     }
 }
diff --git a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/AuthenticationContext.kt b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/AuthenticationContext.kt
index 6bdff4d5aab..4f47f8edfdc 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/AuthenticationContext.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/AuthenticationContext.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.auth
@@ -17,8 +17,9 @@ public class AuthenticationContext(call: ApplicationCall) {
     public var call: ApplicationCall = call
         private set
 
-    private val _errors = HashMap<Any, AuthenticationFailedCause>()
+    private val errors = HashMap<Any, AuthenticationFailedCause>()
 
+    @Suppress("PropertyName")
     internal val _principal: CombinedPrincipal = CombinedPrincipal()
 
     /**
@@ -36,19 +37,19 @@ public class AuthenticationContext(call: ApplicationCall) {
      * All registered errors during auth procedure (only [AuthenticationFailedCause.Error]).
      */
     public val allErrors: List<AuthenticationFailedCause.Error>
-        get() = _errors.values.filterIsInstance<AuthenticationFailedCause.Error>()
+        get() = errors.values.filterIsInstance<AuthenticationFailedCause.Error>()
 
     /**
      * All authentication failures during auth procedure including missing or invalid credentials.
      */
     public val allFailures: List<AuthenticationFailedCause>
-        get() = _errors.values.toList()
+        get() = errors.values.toList()
 
     /**
      * Appends an error to the errors list. Overwrites if already registered for the same [key].
      */
     public fun error(key: Any, cause: AuthenticationFailedCause) {
-        _errors[key] = cause
+        errors[key] = cause
     }
 
     /**
diff --git a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/OAuthCommon.kt b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/OAuthCommon.kt
index 017b8de3488..4a5e22c5b4c 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/OAuthCommon.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/OAuthCommon.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.auth
@@ -14,7 +14,8 @@ import io.ktor.util.*
  */
 
 public enum class OAuthVersion {
-    V10a, V20
+    V10a,
+    V20,
 }
 
 /**
diff --git a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/Principal.kt b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/Principal.kt
index 9bfe75a99c0..240a5be8963 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/Principal.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/Principal.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.auth
@@ -31,7 +31,9 @@ internal class CombinedPrincipal {
             .firstOrNull { (name, principal) ->
                 if (provider != null) {
                     name == provider && klass.isInstance(principal)
-                } else klass.isInstance(principal)
+                } else {
+                    klass.isInstance(principal)
+                }
             }?.second as? T
     }
 
diff --git a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/SessionAuth.kt b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/SessionAuth.kt
index e9941e3fc97..8ad18b78764 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/SessionAuth.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-auth/common/src/io/ktor/server/auth/SessionAuth.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.auth
@@ -38,7 +38,9 @@ public class SessionAuthenticationProvider<T : Any> private constructor(
             val cause =
                 if (session == null) {
                     AuthenticationFailedCause.NoCredentials
-                } else AuthenticationFailedCause.InvalidCredentials
+                } else {
+                    AuthenticationFailedCause.InvalidCredentials
+                }
 
             @Suppress("NAME_SHADOWING")
             context.challenge(SessionAuthChallengeKey, cause) { challenge, call ->
diff --git a/ktor-server/ktor-server-plugins/ktor-server-auth/common/test/io/ktor/tests/auth/OAuth2Test.kt b/ktor-server/ktor-server-plugins/ktor-server-auth/common/test/io/ktor/tests/auth/OAuth2Test.kt
index 16a387b771a..340c50a6cd0 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-auth/common/test/io/ktor/tests/auth/OAuth2Test.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-auth/common/test/io/ktor/tests/auth/OAuth2Test.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.auth
@@ -349,7 +349,7 @@ class OAuth2Test {
                     call.authentication.allFailures.all {
                         it is OAuth2RedirectError && it.error == "access_denied"
                     }
-                } // ktlint-disable max-line-length
+                }
             }
         }
         val call = noRedirectsClient().get(
diff --git a/ktor-server/ktor-server-plugins/ktor-server-body-limit/common/test/io/ktor/server/plugins/bodylimit/RequestBodyLimitTest.kt b/ktor-server/ktor-server-plugins/ktor-server-body-limit/common/test/io/ktor/server/plugins/bodylimit/RequestBodyLimitTest.kt
index d27d23a840e..25a173465dd 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-body-limit/common/test/io/ktor/server/plugins/bodylimit/RequestBodyLimitTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-body-limit/common/test/io/ktor/server/plugins/bodylimit/RequestBodyLimitTest.kt
@@ -1,6 +1,7 @@
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.plugins.bodylimit
 
 import io.ktor.client.request.*
diff --git a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/CallLoggingConfig.kt b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/CallLoggingConfig.kt
index 87100810ccb..354858456b8 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/CallLoggingConfig.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/CallLoggingConfig.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.calllogging
@@ -135,5 +135,7 @@ public class CallLoggingConfig {
     private fun colored(value: Any, color: Ansi.Color): String =
         if (isColorsEnabled) {
             Ansi.ansi().fg(color).a(value).reset().toString()
-        } else value.toString() // ignore color
+        } else {
+            value.toString() // ignore color
+        }
 }
diff --git a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/MDCHook.kt b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/MDCHook.kt
index ddb745cf0ab..35d9310a375 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/MDCHook.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/src/io/ktor/server/plugins/calllogging/MDCHook.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.calllogging
@@ -9,6 +9,7 @@ import io.ktor.server.response.*
 import io.ktor.util.*
 import io.ktor.util.pipeline.*
 
+@Suppress("FunctionName")
 internal fun MDCHook(phase: PipelinePhase) = object : Hook<suspend (ApplicationCall, suspend () -> Unit) -> Unit> {
     override fun install(
         pipeline: ApplicationCallPipeline,
diff --git a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/test/io/ktor/server/plugins/calllogging/CallLoggingTest.kt b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/test/io/ktor/server/plugins/calllogging/CallLoggingTest.kt
index 36d8d67cf55..f2873d553ba 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/test/io/ktor/server/plugins/calllogging/CallLoggingTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-call-logging/jvm/test/io/ktor/server/plugins/calllogging/CallLoggingTest.kt
@@ -520,9 +520,10 @@ class CallLoggingTest {
 
         client.get("/").apply {
             assertEquals(HttpStatusCode.BadRequest, status)
+            @Suppress("ktlint:standard:max-line-length")
             assertContains(
                 messages,
-                "DEBUG: Unhandled: GET - /. Exception class io.ktor.server.plugins.BadRequestException: Message of exception" // ktlint-disable max-line-length
+                "DEBUG: Unhandled: GET - /. Exception class io.ktor.server.plugins.BadRequestException: Message of exception"
             )
         }
     }
diff --git a/ktor-server/ktor-server-plugins/ktor-server-compression/jvm/src/io/ktor/server/plugins/compression/Config.kt b/ktor-server/ktor-server-plugins/ktor-server-compression/jvm/src/io/ktor/server/plugins/compression/Config.kt
index 6bc4326a4c0..9a52c269aa6 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-compression/jvm/src/io/ktor/server/plugins/compression/Config.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-compression/jvm/src/io/ktor/server/plugins/compression/Config.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.compression
@@ -49,7 +49,9 @@ public data class CompressionEncoderConfig(
 public class CompressionConfig : ConditionsHolderBuilder {
 
     public enum class Mode(internal val request: Boolean, internal val response: Boolean) {
-        CompressResponse(false, true), DecompressRequest(true, false), All(true, true)
+        CompressResponse(false, true),
+        DecompressRequest(true, false),
+        All(true, true),
     }
 
     /**
diff --git a/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/common/test/RequestConverterTest.kt b/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/common/test/RequestConverterTest.kt
index 35d9a102d7c..c6867223d3a 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/common/test/RequestConverterTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/common/test/RequestConverterTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.contentnegotiation
@@ -78,8 +78,9 @@ class RequestConverterTest {
         }.bodyAsText()
 
         try {
+            @Suppress("ktlint:standard:max-line-length")
             assertEquals(
-                "Cannot transform this request's content to io.ktor.server.plugins.contentnegotiation.NonSerializableClass", // ktlint-disable max-line-length
+                "Cannot transform this request's content to io.ktor.server.plugins.contentnegotiation.NonSerializableClass",
                 responseFoo
             )
         } catch (cause: Throwable) {
diff --git a/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/jvm/test/ContentNegotiationJvmTest.kt b/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/jvm/test/ContentNegotiationJvmTest.kt
index d5030193b62..4cbcf2de77b 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/jvm/test/ContentNegotiationJvmTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-content-negotiation/jvm/test/ContentNegotiationJvmTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.plugins.contentnegotiation
 
 import io.ktor.client.request.*
diff --git a/ktor-server/ktor-server-plugins/ktor-server-cors/common/src/io/ktor/server/plugins/cors/CORS.kt b/ktor-server/ktor-server-plugins/ktor-server-cors/common/src/io/ktor/server/plugins/cors/CORS.kt
index 9eecb1d38cc..dc6765585d0 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-cors/common/src/io/ktor/server/plugins/cors/CORS.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-cors/common/src/io/ktor/server/plugins/cors/CORS.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.cors
@@ -155,7 +155,9 @@ internal fun PluginBuilder<CORSConfig>.buildPlugin() {
 }
 
 private enum class OriginCheckResult {
-    OK, SkipCORS, Failed
+    OK,
+    SkipCORS,
+    Failed,
 }
 
 private fun checkOrigin(
diff --git a/ktor-server/ktor-server-plugins/ktor-server-default-headers/common/src/io/ktor/server/plugins/defaultheaders/DefaultHeaders.kt b/ktor-server/ktor-server-plugins/ktor-server-default-headers/common/src/io/ktor/server/plugins/defaultheaders/DefaultHeaders.kt
index 19f7abd6ee7..aa765cecc00 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-default-headers/common/src/io/ktor/server/plugins/defaultheaders/DefaultHeaders.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-default-headers/common/src/io/ktor/server/plugins/defaultheaders/DefaultHeaders.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.server.plugins.defaultheaders
 
@@ -43,13 +43,7 @@ public class DefaultHeadersConfig {
         public fun now(): Long
     }
 
-    private val _cachedDateText = atomic("")
-
-    internal var cachedDateText: String
-        get() = _cachedDateText.value
-        set(value) {
-            _cachedDateText.value = value
-        }
+    internal var cachedDateText: String by atomic("")
 }
 
 /**
diff --git a/ktor-server/ktor-server-plugins/ktor-server-double-receive/common/src/io/ktor/server/plugins/doublereceive/ByteArrayCache.kt b/ktor-server/ktor-server-plugins/ktor-server-double-receive/common/src/io/ktor/server/plugins/doublereceive/ByteArrayCache.kt
index 169bf3e32c6..f93f92c70cc 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-double-receive/common/src/io/ktor/server/plugins/doublereceive/ByteArrayCache.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-double-receive/common/src/io/ktor/server/plugins/doublereceive/ByteArrayCache.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.doublereceive
diff --git a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jsAndWasmShared/src/io/ktor/server/plugins/doublereceive/FileCache.jsAndWasmShared.kt b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jsAndWasmShared/src/io/ktor/server/plugins/doublereceive/FileCache.jsAndWasmShared.kt
index 4648d18e5f2..e78d3b14e28 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jsAndWasmShared/src/io/ktor/server/plugins/doublereceive/FileCache.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jsAndWasmShared/src/io/ktor/server/plugins/doublereceive/FileCache.jsAndWasmShared.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.doublereceive
diff --git a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/src/io/ktor/server/plugins/doublereceive/FileCacheJvm.kt b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/src/io/ktor/server/plugins/doublereceive/FileCacheJvm.kt
index 30b9a1ffa7a..0783e8fd0c4 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/src/io/ktor/server/plugins/doublereceive/FileCacheJvm.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/src/io/ktor/server/plugins/doublereceive/FileCacheJvm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.doublereceive
diff --git a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/test/DoubleReceiveTestJvm.kt b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/test/DoubleReceiveTestJvm.kt
index c8e574236de..865278ad703 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/test/DoubleReceiveTestJvm.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-double-receive/jvm/test/DoubleReceiveTestJvm.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.server.plugins.doublereceive.*
 import io.ktor.utils.io.*
 import kotlinx.coroutines.*
@@ -5,10 +9,6 @@ import kotlinx.io.*
 import kotlin.coroutines.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class DoubleReceiveTestJvm {
 
     @Test
diff --git a/ktor-server/ktor-server-plugins/ktor-server-double-receive/posix/src/io/ktor/server/plugins/doublereceive/FileCacheNix.kt b/ktor-server/ktor-server-plugins/ktor-server-double-receive/posix/src/io/ktor/server/plugins/doublereceive/FileCacheNix.kt
index 4648d18e5f2..e78d3b14e28 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-double-receive/posix/src/io/ktor/server/plugins/doublereceive/FileCacheNix.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-double-receive/posix/src/io/ktor/server/plugins/doublereceive/FileCacheNix.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.doublereceive
diff --git a/ktor-server/ktor-server-plugins/ktor-server-request-validation/common/test/io/ktor/server/plugins/requestvalidation/RequestValidationTest.kt b/ktor-server/ktor-server-plugins/ktor-server-request-validation/common/test/io/ktor/server/plugins/requestvalidation/RequestValidationTest.kt
index a3b0f129442..f001df1c323 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-request-validation/common/test/io/ktor/server/plugins/requestvalidation/RequestValidationTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-request-validation/common/test/io/ktor/server/plugins/requestvalidation/RequestValidationTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.plugins.requestvalidation
@@ -23,12 +23,16 @@ class RequestValidationTest {
             validate<CharSequence> {
                 if (!it.startsWith("+")) {
                     ValidationResult.Invalid(listOf("$it should start with \"+\""))
-                } else ValidationResult.Valid
+                } else {
+                    ValidationResult.Valid
+                }
             }
             validate<String> {
                 if (!it.endsWith("!")) {
                     ValidationResult.Invalid(listOf("$it should end with \"!\""))
-                } else ValidationResult.Valid
+                } else {
+                    ValidationResult.Valid
+                }
             }
         }
         install(StatusPages) {
@@ -96,7 +100,9 @@ class RequestValidationTest {
                     val intValue = it.decodeToString(0, 0 + it.size).toInt()
                     if (intValue < 0) {
                         ValidationResult.Invalid("Value is negative")
-                    } else ValidationResult.Valid
+                    } else {
+                        ValidationResult.Valid
+                    }
                 }
             }
         }
diff --git a/ktor-server/ktor-server-plugins/ktor-server-resources/common/test/io/ktor/tests/resources/ResourcesTest.kt b/ktor-server/ktor-server-plugins/ktor-server-resources/common/test/io/ktor/tests/resources/ResourcesTest.kt
index e54e1e4cc30..0ed0acd64a4 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-resources/common/test/io/ktor/tests/resources/ResourcesTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-resources/common/test/io/ktor/tests/resources/ResourcesTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.resources
@@ -413,7 +413,9 @@ class ResourcesTest {
     }
 
     enum class resourceEnum {
-        A, B, C
+        A,
+        B,
+        C,
     }
 
     @Resource("/")
diff --git a/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionData.kt b/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionData.kt
index c7a5b912f6a..f431b146132 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionData.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionData.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.sessions
@@ -161,7 +161,7 @@ internal suspend fun <S : Any> SessionProviderData<S>.sendSessionData(call: Appl
         }
 
         incoming && oldValue == null -> {
-            /* Deleted session should be cleared off */
+            // Deleted session should be cleared off
             provider.transport.clear(call)
             provider.tracker.clear(call)
         }
diff --git a/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionTransportCookie.kt b/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionTransportCookie.kt
index 38003006731..ed6ee613ac9 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionTransportCookie.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-sessions/common/src/io/ktor/server/sessions/SessionTransportCookie.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.sessions
 
 import io.ktor.http.*
diff --git a/ktor-server/ktor-server-plugins/ktor-server-sessions/jvm/src/io/ktor/server/sessions/SessionSerializerReflection.kt b/ktor-server/ktor-server-plugins/ktor-server-sessions/jvm/src/io/ktor/server/sessions/SessionSerializerReflection.kt
index 2b07c2f9299..e22c345d6f1 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-sessions/jvm/src/io/ktor/server/sessions/SessionSerializerReflection.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-sessions/jvm/src/io/ktor/server/sessions/SessionSerializerReflection.kt
@@ -1,8 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable experimental:argument-list-wrapping
 package io.ktor.server.sessions
 
 import io.ktor.http.*
diff --git a/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/Webjars.kt b/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/Webjars.kt
index a275e9f4220..15ba18eec1b 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/Webjars.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/Webjars.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.server.webjars
 
 import io.ktor.http.*
diff --git a/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/WebjarsUtils.kt b/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/WebjarsUtils.kt
index c1a327d0d60..39559fa657f 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/WebjarsUtils.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-webjars/jvm/src/io/ktor/server/webjars/WebjarsUtils.kt
@@ -1,9 +1,5 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
-/*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.webjars
diff --git a/ktor-server/ktor-server-plugins/ktor-server-websockets/common/test/io/ktor/tests/websocket/RawWebSocketTest.kt b/ktor-server/ktor-server-plugins/ktor-server-websockets/common/test/io/ktor/tests/websocket/RawWebSocketTest.kt
index 21c4d4991bd..558102d089a 100644
--- a/ktor-server/ktor-server-plugins/ktor-server-websockets/common/test/io/ktor/tests/websocket/RawWebSocketTest.kt
+++ b/ktor-server/ktor-server-plugins/ktor-server-websockets/common/test/io/ktor/tests/websocket/RawWebSocketTest.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.tests.websocket
 
@@ -36,7 +36,7 @@ class RawWebSocketTest {
     }
 
     @AfterTest
-    fun _verifyErrors() {
+    fun verifyErrors() {
         if (errors.isEmpty()) return
 
         val error = IllegalStateException(
diff --git a/ktor-server/ktor-server-servlet-jakarta/jvm/src/io/ktor/server/servlet/jakarta/AsyncServlet.kt b/ktor-server/ktor-server-servlet-jakarta/jvm/src/io/ktor/server/servlet/jakarta/AsyncServlet.kt
index 10da3669163..aa0b5a815d8 100644
--- a/ktor-server/ktor-server-servlet-jakarta/jvm/src/io/ktor/server/servlet/jakarta/AsyncServlet.kt
+++ b/ktor-server/ktor-server-servlet-jakarta/jvm/src/io/ktor/server/servlet/jakarta/AsyncServlet.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.servlet.jakarta
@@ -64,7 +64,9 @@ public class AsyncServletApplicationRequest(
         if (!upgraded) {
             val contentLength = servletRequest.contentLength
             servletReader(servletRequest.inputStream, contentLength).channel
-        } else ByteReadChannel.Empty
+        } else {
+            ByteReadChannel.Empty
+        }
     }
 
     override val engineReceiveChannel: ByteReadChannel get() = inputStreamChannel
diff --git a/ktor-server/ktor-server-servlet/jvm/src/io/ktor/server/servlet/AsyncServlet.kt b/ktor-server/ktor-server-servlet/jvm/src/io/ktor/server/servlet/AsyncServlet.kt
index de5daf34bfa..df6447c9713 100644
--- a/ktor-server/ktor-server-servlet/jvm/src/io/ktor/server/servlet/AsyncServlet.kt
+++ b/ktor-server/ktor-server-servlet/jvm/src/io/ktor/server/servlet/AsyncServlet.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.server.servlet
 
@@ -64,7 +64,9 @@ public class AsyncServletApplicationRequest(
         if (!upgraded) {
             val contentLength = servletRequest.contentLength
             servletReader(servletRequest.inputStream, contentLength).channel
-        } else ByteReadChannel.Empty
+        } else {
+            ByteReadChannel.Empty
+        }
     }
 
     override val engineReceiveChannel: ByteReadChannel get() = inputStreamChannel
diff --git a/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt b/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
index fe9b632b017..c688ed37db0 100644
--- a/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-test-base/jsAndWasmShared/src/io/ktor/server/test/base/EngineTestBase.jsAndWasmShared.kt
@@ -68,7 +68,7 @@ actual constructor(
         parent: CoroutineContext = EmptyCoroutineContext,
         module: Application.() -> Unit
     ): EmbeddedServer<TEngine, TConfiguration> {
-        val _port = this.port
+        val savedPort = this.port
         val environment = applicationEnvironment {
             val delegate = KtorSimpleLogger("io.ktor.test")
             this.log = log ?: object : Logger by delegate {
@@ -89,7 +89,7 @@ actual constructor(
         }
 
         return embeddedServer(applicationEngineFactory, properties) {
-            connector { port = _port }
+            connector { port = savedPort }
             shutdownGracePeriod = 1000
             shutdownTimeout = 1000
         }
@@ -110,7 +110,7 @@ actual constructor(
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }
diff --git a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/BaseTestJvm.kt b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/BaseTestJvm.kt
index c193ced8e55..3c388152563 100644
--- a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/BaseTestJvm.kt
+++ b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/BaseTestJvm.kt
@@ -2,7 +2,6 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.server.test.base
 
 import io.ktor.junit.*
diff --git a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
index 5b008d8e6f9..86aef1f6bca 100644
--- a/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
+++ b/ktor-server/ktor-server-test-base/jvm/src/io/ktor/server/test/base/EngineTestBaseJvm.kt
@@ -2,7 +2,6 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.server.test.base
 
 import io.ktor.client.*
@@ -44,7 +43,6 @@ actual abstract class EngineTestBase<
 ) : BaseTest(), CoroutineScope {
     private val testJob = Job()
 
-    @OptIn(ExperimentalCoroutinesApi::class)
     protected val testDispatcher = Dispatchers.IO.limitedParallelism(32)
 
     protected val isUnderDebugger: Boolean =
@@ -113,7 +111,7 @@ actual abstract class EngineTestBase<
         parent: CoroutineContext = EmptyCoroutineContext,
         module: Application.() -> Unit
     ): EmbeddedServer<TEngine, TConfiguration> {
-        val _port = this.port
+        val savedPort = this.port
         val environment = applicationEnvironment {
             val delegate = LoggerFactory.getLogger("io.ktor.test")
             this.log = log ?: object : Logger by delegate {
@@ -139,7 +137,7 @@ actual abstract class EngineTestBase<
             shutdownGracePeriod = 1000
             shutdownTimeout = 1000
 
-            connector { port = _port }
+            connector { port = savedPort }
             if (enableSsl) {
                 sslConnector(keyStore, "mykey", { "changeit".toCharArray() }, { "changeit".toCharArray() }) {
                     this.port = sslPort
@@ -218,7 +216,7 @@ actual abstract class EngineTestBase<
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }
diff --git a/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt b/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
index b575aa151b8..6e8967fe3ce 100644
--- a/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
+++ b/ktor-server/ktor-server-test-base/posix/src/io/ktor/server/test/base/EngineTestBaseNix.kt
@@ -79,7 +79,7 @@ actual constructor(
         parent: CoroutineContext = EmptyCoroutineContext,
         module: Application.() -> Unit
     ): EmbeddedServer<TEngine, TConfiguration> {
-        val _port = this.port
+        val savedPort = this.port
         val environment = applicationEnvironment {
             val delegate = KtorSimpleLogger("io.ktor.test")
             this.log = log ?: object : Logger by delegate {
@@ -100,7 +100,7 @@ actual constructor(
         }
 
         return embeddedServer(applicationEngineFactory, properties) {
-            connector { port = _port }
+            connector { port = savedPort }
             shutdownGracePeriod = 1000
             shutdownTimeout = 1000
         }
@@ -121,7 +121,7 @@ actual constructor(
             starting.join()
             @OptIn(ExperimentalCoroutinesApi::class)
             starting.getCompletionExceptionOrNull()?.let { listOf(it) } ?: emptyList()
-        } catch (t: Throwable) { // InterruptedException?
+        } catch (t: Throwable) {
             starting.cancel()
             listOf(t)
         }
diff --git a/ktor-server/ktor-server-test-host/common/src/io/ktor/server/testing/TestApplication.kt b/ktor-server/ktor-server-test-host/common/src/io/ktor/server/testing/TestApplication.kt
index bd89b10a1c2..967682d4682 100644
--- a/ktor-server/ktor-server-test-host/common/src/io/ktor/server/testing/TestApplication.kt
+++ b/ktor-server/ktor-server-test-host/common/src/io/ktor/server/testing/TestApplication.kt
@@ -58,7 +58,10 @@ public class TestApplication internal constructor(
 ) : ClientProvider by builder {
 
     internal enum class State {
-        Created, Starting, Started, Stopped
+        Created,
+        Starting,
+        Started,
+        Stopped,
     }
 
     private val state = atomic(State.Created)
diff --git a/ktor-server/ktor-server-test-host/jsAndWasmShared/src/io/ktor/server/testing/client/TestHttpClientEngineBridge.jsAndWasmShared.kt b/ktor-server/ktor-server-test-host/jsAndWasmShared/src/io/ktor/server/testing/client/TestHttpClientEngineBridge.jsAndWasmShared.kt
index ddd907c0e1e..17d1d11bf97 100644
--- a/ktor-server/ktor-server-test-host/jsAndWasmShared/src/io/ktor/server/testing/client/TestHttpClientEngineBridge.jsAndWasmShared.kt
+++ b/ktor-server/ktor-server-test-host/jsAndWasmShared/src/io/ktor/server/testing/client/TestHttpClientEngineBridge.jsAndWasmShared.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.testing.client
diff --git a/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestEngineWebsocketSession.kt b/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestEngineWebsocketSession.kt
index 8a0234194a3..29ef02c0d07 100644
--- a/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestEngineWebsocketSession.kt
+++ b/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestEngineWebsocketSession.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.testing.client
@@ -33,7 +33,9 @@ internal class TestEngineWebsocketSession(
         outgoing.invokeOnClose {
             if (it != null) {
                 socketJob.completeExceptionally(it)
-            } else socketJob.complete()
+            } else {
+                socketJob.complete()
+            }
         }
         socketJob.join()
     }
diff --git a/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeJvm.kt b/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeJvm.kt
index 17f266f4f9a..7ff3be1d161 100644
--- a/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeJvm.kt
+++ b/ktor-server/ktor-server-test-host/jvm/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeJvm.kt
@@ -2,7 +2,6 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.server.testing.client
 
 import io.ktor.client.engine.*
diff --git a/ktor-server/ktor-server-test-host/posix/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeNix.kt b/ktor-server/ktor-server-test-host/posix/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeNix.kt
index b64c2a948f1..69a9964c3b9 100644
--- a/ktor-server/ktor-server-test-host/posix/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeNix.kt
+++ b/ktor-server/ktor-server-test-host/posix/src/io/ktor/server/testing/client/TestHttpClientEngineBridgeNix.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.testing.client
diff --git a/ktor-server/ktor-server-test-suites/jvm/src/io/ktor/server/testing/suites/SustainabilityTestSuite.kt b/ktor-server/ktor-server-test-suites/jvm/src/io/ktor/server/testing/suites/SustainabilityTestSuite.kt
index f50ebb82ed9..187f6852753 100644
--- a/ktor-server/ktor-server-test-suites/jvm/src/io/ktor/server/testing/suites/SustainabilityTestSuite.kt
+++ b/ktor-server/ktor-server-test-suites/jvm/src/io/ktor/server/testing/suites/SustainabilityTestSuite.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.server.testing.suites
 
@@ -510,7 +510,7 @@ abstract class SustainabilityTestSuite<TEngine : ApplicationEngine, TConfigurati
 
             dump()
 
-            /* use for debugging */
+            // Uncomment for debugging
 //        if (conns.any { !it.isDone }) {
 //             TimeUnit.SECONDS.sleep(500)
 //        }
@@ -664,7 +664,8 @@ abstract class SustainabilityTestSuite<TEngine : ApplicationEngine, TConfigurati
             }
         }
         ApplicationCallPipeline(environment = createTestEnvironment()).items
-            .filter { it != ApplicationCallPipeline.ApplicationPhase.Fallback } // fallback will reply with 404 and not 500
+            // fallback will reply with 404 and not 500
+            .filter { it != ApplicationCallPipeline.ApplicationPhase.Fallback }
             .forEach { phase ->
                 val server = createServer(log = logger) {
                     intercept(phase) {
diff --git a/ktor-server/ktor-server-tests/common/src/Stub.kt b/ktor-server/ktor-server-tests/common/src/Stub.kt
index b48bfaacd20..0ff3ed10564 100644
--- a/ktor-server/ktor-server-tests/common/src/Stub.kt
+++ b/ktor-server/ktor-server-tests/common/src/Stub.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.server.tests
 
 internal fun stub() {
diff --git a/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/plugins/ConditionalHeadersTests.kt b/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/plugins/ConditionalHeadersTests.kt
index 00b500ed172..08b2dad2b39 100644
--- a/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/plugins/ConditionalHeadersTests.kt
+++ b/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/plugins/ConditionalHeadersTests.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.server.plugins
diff --git a/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/routing/RoutingResolveTest.kt b/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/routing/RoutingResolveTest.kt
index eb1432b0b1d..34a8c6e3342 100644
--- a/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/routing/RoutingResolveTest.kt
+++ b/ktor-server/ktor-server-tests/common/test/io/ktor/tests/server/routing/RoutingResolveTest.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.tests.server.routing
@@ -7,7 +7,7 @@ package io.ktor.tests.server.routing
 import io.ktor.client.request.*
 import io.ktor.client.statement.*
 import io.ktor.http.*
-import io.ktor.server.application.Application
+import io.ktor.server.application.*
 import io.ktor.server.plugins.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
@@ -171,7 +171,7 @@ class RoutingResolveTest {
     }
 
     @Test
-    fun routing_with_foo() = testRouting() { root ->
+    fun routing_with_foo() = testRouting { root ->
         val fooEntry = root.handle(PathSegmentConstantRouteSelector("foo"))
 
         on("resolving /foo") {
diff --git a/ktor-server/ktor-server-tests/jvm/test/io/ktor/server/http/ApplicationRequestContentTestJvm.kt b/ktor-server/ktor-server-tests/jvm/test/io/ktor/server/http/ApplicationRequestContentTestJvm.kt
index b2b47d6f9f3..a75f2b33dcd 100644
--- a/ktor-server/ktor-server-tests/jvm/test/io/ktor/server/http/ApplicationRequestContentTestJvm.kt
+++ b/ktor-server/ktor-server-tests/jvm/test/io/ktor/server/http/ApplicationRequestContentTestJvm.kt
@@ -2,7 +2,6 @@
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
-// ktlint-disable filename
 package io.ktor.server.http
 
 import io.ktor.client.request.*
diff --git a/ktor-server/ktor-server-tomcat-jakarta/jvm/src/io/ktor/server/tomcat/jakarta/Embedded.kt b/ktor-server/ktor-server-tomcat-jakarta/jvm/src/io/ktor/server/tomcat/jakarta/Embedded.kt
index 9cf99f151bb..0f418a11c38 100644
--- a/ktor-server/ktor-server-tomcat-jakarta/jvm/src/io/ktor/server/tomcat/jakarta/Embedded.kt
+++ b/ktor-server/ktor-server-tomcat-jakarta/jvm/src/io/ktor/server/tomcat/jakarta/Embedded.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.tomcat.jakarta
diff --git a/ktor-server/ktor-server-tomcat/jvm/src/io/ktor/server/tomcat/Embedded.kt b/ktor-server/ktor-server-tomcat/jvm/src/io/ktor/server/tomcat/Embedded.kt
index 9325996582c..d6c2b3b1e3e 100644
--- a/ktor-server/ktor-server-tomcat/jvm/src/io/ktor/server/tomcat/Embedded.kt
+++ b/ktor-server/ktor-server-tomcat/jvm/src/io/ktor/server/tomcat/Embedded.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.server.tomcat
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonContentNegotiationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonContentNegotiationTest.kt
index e13e6f3f5bf..cacdf44f00c 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonContentNegotiationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonContentNegotiationTest.kt
@@ -1,11 +1,11 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.plugins.contentnegotiation.tests.*
 import io.ktor.serialization.gson.*
 import kotlin.test.*
 
-/*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class GsonContentNegotiationTest : JsonContentNegotiationTest(GsonConverter()) {
     @Ignore
     override fun testJsonWithNullValue() {}
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonWebsocketTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonWebsocketTest.kt
index 2c5d693215a..b03d171e6f5 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonWebsocketTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-gson/jvm/test/GsonWebsocketTest.kt
@@ -1,8 +1,8 @@
-import io.ktor.client.plugins.contentnegotiation.tests.*
-import io.ktor.serialization.gson.*
-
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+import io.ktor.client.plugins.contentnegotiation.tests.*
+import io.ktor.serialization.gson.*
+
 class GsonWebsocketTest : JsonWebsocketsTest(GsonWebsocketContentConverter())
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonContentNegotiationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonContentNegotiationTest.kt
index c2abb4b289e..900fca8d5a3 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonContentNegotiationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonContentNegotiationTest.kt
@@ -1,11 +1,11 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 import io.ktor.client.plugins.contentnegotiation.tests.*
 import io.ktor.http.*
 import io.ktor.serialization.jackson.*
 
-/*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
- */
-
 class JacksonContentNegotiationTest : JsonContentNegotiationTest(JacksonConverter()) {
     override val extraFieldResult = HttpStatusCode.BadRequest
 }
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonWebsocketTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonWebsocketTest.kt
index f8b8a376d29..1670d080ca4 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonWebsocketTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-jackson/jvm/test/JacksonWebsocketTest.kt
@@ -1,8 +1,8 @@
-import io.ktor.client.plugins.contentnegotiation.tests.*
-import io.ktor.serialization.jackson.*
-
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
+import io.ktor.client.plugins.contentnegotiation.tests.*
+import io.ktor.serialization.jackson.*
+
 class JacksonWebsocketTest : JsonWebsocketsTest(JacksonWebsocketContentConverter())
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborContextualSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborContextualSerializationTest.kt
index ba9e7d46055..f2760963682 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborContextualSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborContextualSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2020 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborSerializationTest.kt
index ed059822c28..fd2c51964a9 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/common/test/CborSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborClientKotlinxSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborClientKotlinxSerializationTest.kt
index 307a4975d3a..a1fb262589b 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborClientKotlinxSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborClientKotlinxSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.cbor
 
 import io.ktor.client.plugins.contentnegotiation.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborServerKotlinxSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborServerKotlinxSerializationTest.kt
index 39fd578d103..d88f0f4e301 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborServerKotlinxSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-cbor/jvm/test/CborServerKotlinxSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.serialization.kotlinx.test.cbor
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonContextualSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonContextualSerializationTest.kt
index 63be74d9ced..e331e6d60f6 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonContextualSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonContextualSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2020 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonSerializationTest.kt
index 1029795ec13..0b008a008b9 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/common/test/JsonSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.client.engine.mock.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationJsonJvmTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationJsonJvmTest.kt
index 579a737fa43..c230339c4aa 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationJsonJvmTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationJsonJvmTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.client.call.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationTest.kt
index e23918fc38a..7ef2684c450 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonClientKotlinxSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.client.plugins.contentnegotiation.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonServerKotlinxSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonServerKotlinxSerializationTest.kt
index 7170edbf1dd..f46595cc22b 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonServerKotlinxSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-json/jvm/test/JsonServerKotlinxSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.serialization.kotlinx.test.json
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-protobuf/common/src/io/ktor/serialization/kotlinx/protobuf/ProtoBufSupport.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-protobuf/common/src/io/ktor/serialization/kotlinx/protobuf/ProtoBufSupport.kt
index d7a4dabedbb..fc4ec323d6f 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-protobuf/common/src/io/ktor/serialization/kotlinx/protobuf/ProtoBufSupport.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-protobuf/common/src/io/ktor/serialization/kotlinx/protobuf/ProtoBufSupport.kt
@@ -1,3 +1,7 @@
+/*
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.serialization.kotlinx.protobuf
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractContextualSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractContextualSerializationTest.kt
index 11ac94f6221..1059dd3f274 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractContextualSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractContextualSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2020 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractSerializationTest.kt
index b570adf533e..ef51e3c1778 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/common/src/AbstractSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test
 
 import io.ktor.http.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/jvm/src/AbstractServerSerializationKotlinxTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/jvm/src/AbstractServerSerializationKotlinxTest.kt
index 4b9c6d696b2..67b0dd4e3d9 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/jvm/src/AbstractServerSerializationKotlinxTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/ktor-serialization-kotlinx-tests/jvm/src/AbstractServerSerializationKotlinxTest.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.kotlinx.test
 
 import io.ktor.serialization.test.*
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/posix/src/io/ktor/serialization/kotlinx/ExtensionsNative.kt b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/posix/src/io/ktor/serialization/kotlinx/ExtensionsNative.kt
index 61275cedfeb..955bd03ae3c 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/posix/src/io/ktor/serialization/kotlinx/ExtensionsNative.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-kotlinx/posix/src/io/ktor/serialization/kotlinx/ExtensionsNative.kt
@@ -6,6 +6,7 @@ package io.ktor.serialization.kotlinx
 
 import io.ktor.utils.io.*
 
+@Suppress("ObjectPropertyName")
 private val _providers: MutableList<KotlinxSerializationExtensionProvider> = mutableListOf()
 internal actual val providers: List<KotlinxSerializationExtensionProvider> = _providers
 
diff --git a/ktor-shared/ktor-serialization/ktor-serialization-tests/jvm/src/AbstractServerSerializationTest.kt b/ktor-shared/ktor-serialization/ktor-serialization-tests/jvm/src/AbstractServerSerializationTest.kt
index 511d3548b32..9233683cbd4 100644
--- a/ktor-shared/ktor-serialization/ktor-serialization-tests/jvm/src/AbstractServerSerializationTest.kt
+++ b/ktor-shared/ktor-serialization/ktor-serialization-tests/jvm/src/AbstractServerSerializationTest.kt
@@ -1,6 +1,7 @@
 /*
  * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.serialization.test
 
 import io.ktor.client.request.*
diff --git a/ktor-shared/ktor-websockets/jsAndWasmShared/src/io/ktor/websocket/FrameJs.kt b/ktor-shared/ktor-websockets/jsAndWasmShared/src/io/ktor/websocket/FrameJs.kt
index 151ce6b0e81..dd40a1e5ec7 100644
--- a/ktor-shared/ktor-websockets/jsAndWasmShared/src/io/ktor/websocket/FrameJs.kt
+++ b/ktor-shared/ktor-websockets/jsAndWasmShared/src/io/ktor/websocket/FrameJs.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.websocket
diff --git a/ktor-shared/ktor-websockets/posix/src/io/ktor/websocket/FrameNative.kt b/ktor-shared/ktor-websockets/posix/src/io/ktor/websocket/FrameNative.kt
index 0ba4945ca75..fbbe55569ac 100644
--- a/ktor-shared/ktor-websockets/posix/src/io/ktor/websocket/FrameNative.kt
+++ b/ktor-shared/ktor-websockets/posix/src/io/ktor/websocket/FrameNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.websocket
diff --git a/ktor-utils/common/src/io/ktor/util/CaseInsensitiveSet.kt b/ktor-utils/common/src/io/ktor/util/CaseInsensitiveSet.kt
index bd1c4058bf1..8c1da1e7ac2 100644
--- a/ktor-utils/common/src/io/ktor/util/CaseInsensitiveSet.kt
+++ b/ktor-utils/common/src/io/ktor/util/CaseInsensitiveSet.kt
@@ -1,6 +1,7 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
+
 package io.ktor.util
 
 import io.ktor.utils.io.*
diff --git a/ktor-utils/common/src/io/ktor/util/date/Date.kt b/ktor-utils/common/src/io/ktor/util/date/Date.kt
index 2d789cead0a..885b8fd076b 100644
--- a/ktor-utils/common/src/io/ktor/util/date/Date.kt
+++ b/ktor-utils/common/src/io/ktor/util/date/Date.kt
@@ -7,10 +7,7 @@ package io.ktor.util.date
 import kotlinx.serialization.*
 import kotlin.time.*
 
-/**
- * According to:
- * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/time.h.html
- */
+// According to: http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/time.h.html
 
 /**
  * Day of week
diff --git a/ktor-utils/common/src/io/ktor/util/internal/LockFreeLinkedList.kt b/ktor-utils/common/src/io/ktor/util/internal/LockFreeLinkedList.kt
index f0c27354d71..4c409ee0b68 100644
--- a/ktor-utils/common/src/io/ktor/util/internal/LockFreeLinkedList.kt
+++ b/ktor-utils/common/src/io/ktor/util/internal/LockFreeLinkedList.kt
@@ -1,19 +1,16 @@
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.internal
 
+import kotlinx.atomicfu.*
+import kotlin.jvm.*
+
 /*
- * Copyright 2016-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
- *
  * Copied from kotlinx.coroutines
  */
 
-import kotlinx.atomicfu.*
-import kotlin.jvm.*
-import kotlin.native.concurrent.*
-
 private typealias Node = LockFreeLinkedListNode
 
 @PublishedApi
@@ -77,16 +74,16 @@ private val NO_DECISION: Any = Symbol("NO_DECISION")
  * @suppress **This is unstable API and it is subject to change.**
  */
 public abstract class AtomicOp<in T> : OpDescriptor() {
-    private val _consensus = atomic<Any?>(NO_DECISION)
+    private val consensus = atomic<Any?>(NO_DECISION)
 
-    public val isDecided: Boolean get() = _consensus.value !== NO_DECISION
+    public val isDecided: Boolean get() = consensus.value !== NO_DECISION
 
     public fun tryDecide(decision: Any?): Boolean {
         check(decision !== NO_DECISION)
-        return _consensus.compareAndSet(NO_DECISION, decision)
+        return consensus.compareAndSet(NO_DECISION, decision)
     }
 
-    private fun decide(decision: Any?): Any? = if (tryDecide(decision)) decision else _consensus.value
+    private fun decide(decision: Any?): Any? = if (tryDecide(decision)) decision else consensus.value
 
     public abstract fun prepare(affected: T): Any? // `null` if Ok, or failure reason
 
@@ -95,8 +92,8 @@ public abstract class AtomicOp<in T> : OpDescriptor() {
     // returns `null` on success
     @Suppress("UNCHECKED_CAST")
     public final override fun perform(affected: Any?): Any? {
-        // make decision on status
-        var decision = this._consensus.value
+        // make a decision on status
+        var decision = consensus.value
         if (decision === NO_DECISION) {
             decision = decide(prepare(affected as T))
         }
@@ -145,10 +142,10 @@ public open class LockFreeLinkedListNode {
     private val _prev = atomic<Any>(this)
 
     // lazily cached removed ref to this
-    private val _removedRef = atomic<Removed?>(null)
+    private val removedRef = atomic<Removed?>(null)
 
     private fun removed(): Removed =
-        _removedRef.value ?: Removed(this).also { _removedRef.lazySet(it) }
+        removedRef.value ?: Removed(this).also { removedRef.lazySet(it) }
 
     @PublishedApi
     internal abstract class CondAddOp(
@@ -253,13 +250,22 @@ public open class LockFreeLinkedListNode {
         }
     }
 
+    /**
+     * Adds the specified [node] at the end of the list atomically if the previous node matches the given [predicate].
+     *
+     * @param node the node to be added
+     * @param predicate a function that evaluates the previous node
+     * @param condition an atomic condition that must be `true` for the node to be added
+     * @return `true` if the node was added, `false` otherwise
+     */
     public inline fun addLastIfPrevAndIf(
         node: Node,
-        predicate: (Node) -> Boolean, // prev node predicate
-        crossinline condition: () -> Boolean // atomically checked condition
+        predicate: (Node) -> Boolean,
+        crossinline condition: () -> Boolean,
     ): Boolean {
         val condAdd = makeCondAddOp(node, condition)
-        while (true) { // lock-free loop on prev.next
+        // lock-free loop on prev.next
+        while (true) {
             val prev = prev as Node // sentinel node is never removed, so prev is always defined
             if (!predicate(prev)) return false
             when (prev.tryCondAddNext(node, this, condAdd)) {
diff --git a/ktor-utils/common/src/io/ktor/util/pipeline/Pipeline.kt b/ktor-utils/common/src/io/ktor/util/pipeline/Pipeline.kt
index 1617d932e2b..a03265f5637 100644
--- a/ktor-utils/common/src/io/ktor/util/pipeline/Pipeline.kt
+++ b/ktor-utils/common/src/io/ktor/util/pipeline/Pipeline.kt
@@ -59,14 +59,7 @@ public open class Pipeline<TSubject : Any, TContext : Any>(
     public val isEmpty: Boolean
         get() = interceptorsQuantity == 0
 
-    private val _interceptors: AtomicRef<List<PipelineInterceptor<TSubject, TContext>>?> =
-        atomic(null)
-
-    private var interceptors: List<PipelineInterceptor<TSubject, TContext>>?
-        get() = _interceptors.value
-        set(value) {
-            _interceptors.value = value
-        }
+    private var interceptors: List<PipelineInterceptor<TSubject, TContext>>? by atomic(null)
 
     private var interceptorsListShared: Boolean = false
 
diff --git a/ktor-utils/js/src/io/ktor/util/PlatformUtils.js.kt b/ktor-utils/js/src/io/ktor/util/PlatformUtils.js.kt
index 55644611118..7ddcdb1518b 100644
--- a/ktor-utils/js/src/io/ktor/util/PlatformUtils.js.kt
+++ b/ktor-utils/js/src/io/ktor/util/PlatformUtils.js.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.util
 
diff --git a/ktor-utils/js/src/io/ktor/util/date/DateJs.kt b/ktor-utils/js/src/io/ktor/util/date/DateJs.kt
index 5036aa47356..15530a93039 100644
--- a/ktor-utils/js/src/io/ktor/util/date/DateJs.kt
+++ b/ktor-utils/js/src/io/ktor/util/date/DateJs.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.date
@@ -16,7 +16,7 @@ public actual fun GMTDate(timestamp: Long?): GMTDate {
     if (date.getTime().isNaN()) throw InvalidTimestampException(timestamp!!)
 
     with(date) {
-        /* from SUNDAY 0 -> MONDAY 0 */
+        // from SUNDAY 0 -> MONDAY 0
         val dayOfWeek = WeekDay.from((getUTCDay() + 6) % 7)
 
         val month = Month.from(getUTCMonth())
diff --git a/ktor-utils/jsAndWasmShared/src/io/ktor/util/CryptoJs.kt b/ktor-utils/jsAndWasmShared/src/io/ktor/util/CryptoJs.kt
index 9460e953f3e..144934773e3 100644
--- a/ktor-utils/jsAndWasmShared/src/io/ktor/util/CryptoJs.kt
+++ b/ktor-utils/jsAndWasmShared/src/io/ktor/util/CryptoJs.kt
@@ -1,6 +1,6 @@
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.util
 
@@ -40,6 +40,7 @@ public actual fun Digest(name: String): Digest = object : Digest {
 
 // Variable is renamed to `_crypto` so it wouldn't clash with existing `crypto` variable.
 // JS IR backend doesn't reserve names accessed inside js("") calls
+@Suppress("ObjectPropertyName")
 private val _crypto: Crypto = js("(globalThis ? globalThis.crypto : (window.crypto || window.msCrypto))")
 
 private external class Crypto {
diff --git a/ktor-utils/jsAndWasmShared/src/io/ktor/util/PlatformUtilsJs.kt b/ktor-utils/jsAndWasmShared/src/io/ktor/util/PlatformUtilsJs.kt
index 9f1f57d862d..871652d0c4b 100644
--- a/ktor-utils/jsAndWasmShared/src/io/ktor/util/PlatformUtilsJs.kt
+++ b/ktor-utils/jsAndWasmShared/src/io/ktor/util/PlatformUtilsJs.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.util
 
diff --git a/ktor-utils/jsAndWasmShared/src/io/ktor/util/collections/ConcurrentMapJs.kt b/ktor-utils/jsAndWasmShared/src/io/ktor/util/collections/ConcurrentMapJs.kt
index e27709fca72..ab18a4f3928 100644
--- a/ktor-utils/jsAndWasmShared/src/io/ktor/util/collections/ConcurrentMapJs.kt
+++ b/ktor-utils/jsAndWasmShared/src/io/ktor/util/collections/ConcurrentMapJs.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.collections
diff --git a/ktor-utils/jsAndWasmShared/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJs.kt b/ktor-utils/jsAndWasmShared/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJs.kt
index 37f3662e8bc..614a2d07d8c 100644
--- a/ktor-utils/jsAndWasmShared/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJs.kt
+++ b/ktor-utils/jsAndWasmShared/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJs.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.debug
diff --git a/ktor-utils/jsAndWasmShared/src/io/ktor/util/logging/LoggerJs.kt b/ktor-utils/jsAndWasmShared/src/io/ktor/util/logging/LoggerJs.kt
index 8ab1f6a5b32..43c72d4f78a 100644
--- a/ktor-utils/jsAndWasmShared/src/io/ktor/util/logging/LoggerJs.kt
+++ b/ktor-utils/jsAndWasmShared/src/io/ktor/util/logging/LoggerJs.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.logging
diff --git a/ktor-utils/jvm/src/io/ktor/util/collections/ConcurrentMapJvm.kt b/ktor-utils/jvm/src/io/ktor/util/collections/ConcurrentMapJvm.kt
index 7d1733836c6..be5b2ae05ed 100644
--- a/ktor-utils/jvm/src/io/ktor/util/collections/ConcurrentMapJvm.kt
+++ b/ktor-utils/jvm/src/io/ktor/util/collections/ConcurrentMapJvm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.collections
diff --git a/ktor-utils/jvm/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJvm.kt b/ktor-utils/jvm/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJvm.kt
index 13e668d6e20..04514410310 100644
--- a/ktor-utils/jvm/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJvm.kt
+++ b/ktor-utils/jvm/src/io/ktor/util/debug/IntellijIdeaDebugDetectorJvm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.debug
diff --git a/ktor-utils/jvm/src/io/ktor/util/logging/LoggerJvm.kt b/ktor-utils/jvm/src/io/ktor/util/logging/LoggerJvm.kt
index 1c1f8c7e5bf..d3eed5767e6 100644
--- a/ktor-utils/jvm/src/io/ktor/util/logging/LoggerJvm.kt
+++ b/ktor-utils/jvm/src/io/ktor/util/logging/LoggerJvm.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.logging
diff --git a/ktor-utils/posix/src/io/ktor/util/PlatformUtilsNative.kt b/ktor-utils/posix/src/io/ktor/util/PlatformUtilsNative.kt
index d715059313b..c3972f89d26 100644
--- a/ktor-utils/posix/src/io/ktor/util/PlatformUtilsNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/PlatformUtilsNative.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.util
 
diff --git a/ktor-utils/posix/src/io/ktor/util/collections/ConcurrentMapNative.kt b/ktor-utils/posix/src/io/ktor/util/collections/ConcurrentMapNative.kt
index f1275c5c38d..daa781ce2de 100644
--- a/ktor-utils/posix/src/io/ktor/util/collections/ConcurrentMapNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/collections/ConcurrentMapNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.collections
diff --git a/ktor-utils/posix/src/io/ktor/util/collections/LockFreeMPSCQueueNative.kt b/ktor-utils/posix/src/io/ktor/util/collections/LockFreeMPSCQueueNative.kt
index c4f9f317b6e..ca8d4de7995 100644
--- a/ktor-utils/posix/src/io/ktor/util/collections/LockFreeMPSCQueueNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/collections/LockFreeMPSCQueueNative.kt
@@ -1,6 +1,7 @@
 /*
- * Copyright 2014-2019 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
+
 package io.ktor.util.collections
 
 import io.ktor.utils.io.*
@@ -21,18 +22,18 @@ private typealias Core<E> = LockFreeMPSCQueueCore<E>
  */
 @InternalAPI
 public class LockFreeMPSCQueue<E : Any> {
-    private val _cur = atomic(Core<E>(Core.INITIAL_CAPACITY))
+    private val curRef = atomic(Core<E>(Core.INITIAL_CAPACITY))
     private val closed = atomic(0)
 
     // Note: it is not atomic w.r.t. remove operation (remove can transiently fail when isEmpty is false)
-    public val isEmpty: Boolean get() = _cur.value.isEmpty
+    public val isEmpty: Boolean get() = curRef.value.isEmpty
     public val isClosed: Boolean get() = closed.value == 1
 
     public fun close() {
         try {
-            _cur.loop { cur ->
+            curRef.loop { cur ->
                 if (cur.close()) return // closed this copy
-                _cur.compareAndSet(cur, cur.next()) // move to next
+                curRef.compareAndSet(cur, cur.next()) // move to next
             }
         } finally {
             if (!closed.compareAndSet(0, 1)) return
@@ -40,21 +41,21 @@ public class LockFreeMPSCQueue<E : Any> {
     }
 
     public fun addLast(element: E): Boolean {
-        _cur.loop { cur ->
+        curRef.loop { cur ->
             when (cur.addLast(element)) {
                 Core.ADD_SUCCESS -> return true
                 Core.ADD_CLOSED -> return false
-                Core.ADD_FROZEN -> _cur.compareAndSet(cur, cur.next()) // move to next
+                Core.ADD_FROZEN -> curRef.compareAndSet(cur, cur.next()) // move to next
             }
         }
     }
 
     @Suppress("UNCHECKED_CAST")
     public fun removeFirstOrNull(): E? {
-        _cur.loop { cur ->
+        curRef.loop { cur ->
             val result = cur.removeFirstOrNull()
             if (result !== Core.REMOVE_FROZEN) return result as E?
-            _cur.compareAndSet(cur, cur.next())
+            curRef.compareAndSet(cur, cur.next())
         }
     }
 }
@@ -67,8 +68,8 @@ public class LockFreeMPSCQueue<E : Any> {
  */
 private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     private val mask = capacity - 1
-    private val _next = atomic<Core<E>?>(null)
-    private val _state = atomic(0L)
+    private val nextRef = atomic<Core<E>?>(null)
+    private val stateRef = atomic(0L)
     private val array = atomicArrayOfNulls<Any?>(capacity)
 
     private fun setArrayValueHelper(index: Int, value: Any?) {
@@ -81,10 +82,10 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     }
 
     // Note: it is not atomic w.r.t. remove operation (remove can transiently fail when isEmpty is false)
-    val isEmpty: Boolean get() = _state.value.withState { head, tail -> head == tail }
+    val isEmpty: Boolean get() = stateRef.value.withState { head, tail -> head == tail }
 
     fun close(): Boolean {
-        _state.update { state ->
+        stateRef.update { state ->
             if (state and CLOSED_MASK != 0L) return true // ok - already closed
             if (state and FROZEN_MASK != 0L) return false // frozen -- try next
             state or CLOSED_MASK // try set closed bit
@@ -94,20 +95,20 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
 
     // ADD_CLOSED | ADD_FROZEN | ADD_SUCCESS
     fun addLast(element: E): Int {
-        _state.loop { state ->
+        stateRef.loop { state ->
             if (state and (FROZEN_MASK or CLOSED_MASK) != 0L) return state.addFailReason() // cannot add
             state.withState { head, tail ->
                 // there could be one REMOVE element beyond head that we cannot stump up,
                 // so we check for full queue with an extra margin of one element
                 if ((tail + 2) and mask == head and mask) return ADD_FROZEN // overfull, so do freeze & copy
                 val newTail = (tail + 1) and MAX_CAPACITY_MASK
-                if (_state.compareAndSet(state, state.updateTail(newTail))) {
+                if (stateRef.compareAndSet(state, state.updateTail(newTail))) {
                     // successfully added
                     array[tail and mask].value = element
                     // could have been frozen & copied before this item was set -- correct it by filling placeholder
                     var cur = this
                     while (true) {
-                        if (cur._state.value and FROZEN_MASK == 0L) break // all fine -- not frozen yet
+                        if (cur.stateRef.value and FROZEN_MASK == 0L) break // all fine -- not frozen yet
                         cur = cur.next().fillPlaceholder(tail, element) ?: break
                     }
                     return ADD_SUCCESS // added successfully
@@ -140,7 +141,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     // SINGLE CONSUMER
     // REMOVE_FROZEN | null (EMPTY) | E (SUCCESS)
     fun removeFirstOrNull(): Any? {
-        _state.loop { state ->
+        stateRef.loop { state ->
             if (state and FROZEN_MASK != 0L) return REMOVE_FROZEN // frozen -- cannot modify
             state.withState { head, tail ->
                 if ((tail and mask) == (head and mask)) return null // empty
@@ -149,7 +150,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
                 if (element is Placeholder) return null // same story -- consider it not added yet
                 // we cannot put null into array here, because copying thread could replace it with Placeholder and that is a disaster
                 val newHead = (head + 1) and MAX_CAPACITY_MASK
-                if (_state.compareAndSet(state, state.updateHead(newHead))) {
+                if (stateRef.compareAndSet(state, state.updateHead(newHead))) {
                     array[head and mask].value = null // now can safely put null (state was updated)
                     return element // successfully removed in fast-path
                 }
@@ -164,14 +165,14 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     }
 
     private fun removeSlowPath(oldHead: Int, newHead: Int): Core<E>? {
-        _state.loop { state ->
+        stateRef.loop { state ->
             state.withState { head, _ ->
                 check(head == oldHead) { "This queue can have only one consumer" }
                 if (state and FROZEN_MASK != 0L) {
                     // state was already frozen, so removed element was copied to next
                     return next() // continue to correct head in next
                 }
-                if (_state.compareAndSet(state, state.updateHead(newHead))) {
+                if (stateRef.compareAndSet(state, state.updateHead(newHead))) {
                     array[head and mask].value = null // now can safely put null (state was updated)
                     return null
                 }
@@ -182,15 +183,15 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
     fun next(): LockFreeMPSCQueueCore<E> = allocateOrGetNextCopy(markFrozen())
 
     private fun markFrozen(): Long =
-        _state.updateAndGet { state ->
+        stateRef.updateAndGet { state ->
             if (state and FROZEN_MASK != 0L) return state // already marked
             state or FROZEN_MASK
         }
 
     private fun allocateOrGetNextCopy(state: Long): Core<E> {
-        _next.loop { next ->
+        nextRef.loop { next ->
             if (next != null) return next // already allocated & copied
-            _next.compareAndSet(null, allocateNextCopy(state))
+            nextRef.compareAndSet(null, allocateNextCopy(state))
         }
     }
 
@@ -204,7 +205,7 @@ private class LockFreeMPSCQueueCore<E : Any>(private val capacity: Int) {
                 next.setArrayValueHelper(index and next.mask, value ?: Placeholder(index))
                 index++
             }
-            next._state.value = state wo FROZEN_MASK
+            next.stateRef.value = state wo FROZEN_MASK
         }
         return next
     }
diff --git a/ktor-utils/posix/src/io/ktor/util/debug/IntellijIdeaDebugDetectorNative.kt b/ktor-utils/posix/src/io/ktor/util/debug/IntellijIdeaDebugDetectorNative.kt
index 37f3662e8bc..614a2d07d8c 100644
--- a/ktor-utils/posix/src/io/ktor/util/debug/IntellijIdeaDebugDetectorNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/debug/IntellijIdeaDebugDetectorNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.debug
diff --git a/ktor-utils/posix/src/io/ktor/util/logging/LogLevelNative.kt b/ktor-utils/posix/src/io/ktor/util/logging/LogLevelNative.kt
index 10c118b2592..e44d7a148f0 100644
--- a/ktor-utils/posix/src/io/ktor/util/logging/LogLevelNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/logging/LogLevelNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2022 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.logging
diff --git a/ktor-utils/posix/src/io/ktor/util/logging/LoggerNative.kt b/ktor-utils/posix/src/io/ktor/util/logging/LoggerNative.kt
index f75af04ea94..2a55b061d33 100644
--- a/ktor-utils/posix/src/io/ktor/util/logging/LoggerNative.kt
+++ b/ktor-utils/posix/src/io/ktor/util/logging/LoggerNative.kt
@@ -1,6 +1,5 @@
-// ktlint-disable filename
 /*
- * Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.logging
diff --git a/ktor-utils/wasmJs/src/io/ktor/util/PlatformUtils.wasmJs.kt b/ktor-utils/wasmJs/src/io/ktor/util/PlatformUtils.wasmJs.kt
index 247758eb317..9a9b00cd917 100644
--- a/ktor-utils/wasmJs/src/io/ktor/util/PlatformUtils.wasmJs.kt
+++ b/ktor-utils/wasmJs/src/io/ktor/util/PlatformUtils.wasmJs.kt
@@ -1,7 +1,6 @@
-// ktlint-disable filename
 /*
-* Copyright 2014-2021 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
-*/
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ */
 
 package io.ktor.util
 
diff --git a/ktor-utils/wasmJs/src/io/ktor/util/date/Date.kt b/ktor-utils/wasmJs/src/io/ktor/util/date/Date.kt
index 0e522334124..25dc5097ee0 100644
--- a/ktor-utils/wasmJs/src/io/ktor/util/date/Date.kt
+++ b/ktor-utils/wasmJs/src/io/ktor/util/date/Date.kt
@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.date
@@ -27,6 +27,7 @@ internal external class Date() {
     fun getUTCSeconds(): Int
 
     companion object {
+        @Suppress("FunctionName")
         fun UTC(year: Int, month: Int, day: Int, hour: Int, minute: Int, second: Int): Double
     }
 }
diff --git a/ktor-utils/wasmJs/src/io/ktor/util/date/DateWasm.kt b/ktor-utils/wasmJs/src/io/ktor/util/date/DateWasm.kt
index d1fb131ba1f..582ce8b9409 100644
--- a/ktor-utils/wasmJs/src/io/ktor/util/date/DateWasm.kt
+++ b/ktor-utils/wasmJs/src/io/ktor/util/date/DateWasm.kt
@@ -1,11 +1,9 @@
 /*
- * Copyright 2014-2023 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+ * Copyright 2014-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
  */
 
 package io.ktor.util.date
 
-import kotlin.js.*
-
 /**
  * Create new gmt date from the [timestamp].
  * @param timestamp is a number of epoch milliseconds (it is `now` by default).
@@ -16,7 +14,7 @@ public actual fun GMTDate(timestamp: Long?): GMTDate {
     if (date.getTime().isNaN()) throw InvalidTimestampException(timestamp!!)
 
     with(date) {
-        /* from SUNDAY 0 -> MONDAY 0 */
+        // from SUNDAY 0 -> MONDAY 0
         val dayOfWeek = WeekDay.from((getUTCDay() + 6) % 7)
 
         val month = Month.from(getUTCMonth())