diff --git a/package.json b/package.json
index 3b3205f..92a46fb 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "private": false,
   "name": "ssh-tunneling",
-  "version": "1.1.14",
+  "version": "1.1.16",
   "description": "a ssh-tunneling client for nodejs",
   "keywords": [
     "ssh tunnel",
diff --git a/src/index.ts b/src/index.ts
index 1940485..fab1318 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -301,7 +301,7 @@ class SshTunnel {
       setTimeout(() => {
         // 防止大量并发请求进来时导致 channel 连接数过大，状态默认缓存 3s 后，自动销毁
         this.heartbeatPromise = undefined;
-      }, 3000);
+      }, 5000);
     });
     return this.heartbeatPromise;
   };
@@ -378,8 +378,8 @@ class SshTunnel {
                 });
                 // pipeline(socket, stream);
                 // pipeline(stream, socket);
-                // socket.pipe(stream);
-                // stream.pipe(socket);
+                socket.pipe(stream);
+                stream.pipe(socket);
                 // socket.on('data', data => {
                 //   logger.orange(`local data, ${data.toString('utf8')}`)
                 //   stream.write(data);