Uses timer pool in sendNoWait, like in waitForSendErr

session.go

@@ -360,8 +360,13 @@ func (s *Session) waitForSendErr(hdr header, body io.Reader, errCh chan error) e
 // the send happens right here, we enforce the connection write timeout if we
 // can't queue the header to be sent.
 func (s *Session) sendNoWait(hdr header) error {
-	timer := time.NewTimer(s.config.ConnectionWriteTimeout)
-	defer timer.Stop()
+	t := timerPool.Get()
+	timer := t.(*time.Timer)
+	timer.Reset(s.config.ConnectionWriteTimeout)
+	defer func() {
+		timer.Stop()
+		timerPool.Put(t)
+	}()
 
 	select {
 	case s.sendCh <- sendReady{Hdr: hdr}: