diff --git a/volo-thrift/src/codec/mod.rs b/volo-thrift/src/codec/mod.rs
index 7c8923c9..240d912e 100644
--- a/volo-thrift/src/codec/mod.rs
+++ b/volo-thrift/src/codec/mod.rs
@@ -8,7 +8,7 @@ pub mod default;
 
 pub use default::DefaultMakeCodec;
 
-/// [`Decoder`] reads from an [`AsyncRead`] and decodes the data into a [`ThriftMessage`].
+/// [`Decoder`] decodes the data into a [`ThriftMessage`].
 ///
 /// Returning an Ok(None) indicates the EOF has been reached.
 ///
@@ -24,7 +24,7 @@ pub trait Decoder: Send + Sync + 'static {
     }
 }
 
-/// [`Encoder`] writes a [`ThriftMessage`] to an [`AsyncWrite`] and flushes the data.
+/// [`Encoder`] writes a [`ThriftMessage`] and flushes the data.
 ///
 /// Note: [`Encoder`] should be designed to be ready for reuse.
 pub trait Encoder: Send + Sync + 'static {
@@ -39,8 +39,7 @@ pub trait Encoder: Send + Sync + 'static {
     }
 }
 
-/// [`MakeCodec`] receives an [`R`] and an [`W`] and returns a
-/// [`Decoder`] and an [`Encoder`].
+/// [`MakeCodec`] returns a [`Decoder`] and an [`Encoder`].
 ///
 /// The implementation of [`MakeCodec`] must make sure the [`Decoder`] and [`Encoder`]
 /// matches.
diff --git a/volo/src/net/conn.rs b/volo/src/net/conn.rs
index f3391ce9..531063f9 100644
--- a/volo/src/net/conn.rs
+++ b/volo/src/net/conn.rs
@@ -1,6 +1,7 @@
+#[cfg(target_family = "unix")]
+use std::os::fd::{AsRawFd, RawFd};
 use std::{
     io,
-    os::fd::{AsRawFd, RawFd},
     pin::Pin,
     task::{Context, Poll},
 };
@@ -367,12 +368,12 @@ impl ConnStream {
     }
 }
 
+#[cfg(target_family = "unix")]
 impl AsRawFd for ConnStream {
     #[inline]
     fn as_raw_fd(&self) -> RawFd {
         match self {
             Self::Tcp(s) => s.as_raw_fd(),
-            #[cfg(target_family = "unix")]
             Self::Unix(s) => s.as_raw_fd(),
             #[cfg(feature = "rustls")]
             Self::Rustls(s) => s.as_raw_fd(),