message: perf(server): skip noop AddrStream inner flush
diff: @@ -216,7 +216,8 @@ mod addr_stream {
  #[inline]
  fn flush(&mut self) -> io::Result<()> {
  - self.inner.flush()
  + // TcpStream::flush is a noop, so skip calling it...
  + Ok(())
  }
  }
  