store closed flag

Author: th4s

crates/tlsn/src/utils.rs

@@ -86,12 +86,14 @@ where
                 && read == 0
             {
                 ready!(this.io.as_mut().poll_close(cx))?;
+                *this.closed = true;
             }
 
             if let Poll::Ready(write) = write
                 && write == 0
             {
                 ready!(this.duplex.as_mut().poll_close(cx))?;
+                *this.closed = true;
             }
 
             if matches!(read, Poll::Pending) && matches!(write, Poll::Pending) {
@@ -106,6 +108,6 @@ where
     S: AsyncRead + AsyncWrite + Send + Unpin,
 {
     fn is_terminated(&self) -> bool {
-        false
+        self.closed
     }
 }