diff --git a/src/server/tracker/inspector/http1.rs b/src/server/tracker/inspector/http1.rs
index 552780f..3262f2f 100644
--- a/src/server/tracker/inspector/http1.rs
+++ b/src/server/tracker/inspector/http1.rs
@@ -92,8 +92,8 @@ where
     }
 
     #[inline]
-    fn poll_flush(self: Pin<&mut Self>, _cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
-        Poll::Ready(Ok(()))
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
+        self.project().inner.poll_flush(cx)
     }
 
     #[inline]
diff --git a/src/server/tracker/inspector/http2/mod.rs b/src/server/tracker/inspector/http2/mod.rs
index c7536e5..cb62f80 100644
--- a/src/server/tracker/inspector/http2/mod.rs
+++ b/src/server/tracker/inspector/http2/mod.rs
@@ -101,8 +101,8 @@ where
     }
 
     #[inline]
-    fn poll_flush(self: Pin<&mut Self>, _cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
-        Poll::Ready(Ok(()))
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
+        self.project().inner.poll_flush(cx)
     }
 
     #[inline]
diff --git a/src/server/tracker/inspector/tls/mod.rs b/src/server/tracker/inspector/tls/mod.rs
index 1e784bc..9f209a7 100644
--- a/src/server/tracker/inspector/tls/mod.rs
+++ b/src/server/tracker/inspector/tls/mod.rs
@@ -80,8 +80,8 @@ where
     }
 
     #[inline]
-    fn poll_flush(self: Pin<&mut Self>, _cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
-        Poll::Ready(Ok(()))
+    fn poll_flush(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> Poll<io::Result<()>> {
+        self.project().inner.poll_flush(cx)
     }
 
     #[inline]