From a983c40cdd6ebbba1406aa713f134a751f12b7c3 Mon Sep 17 00:00:00 2001
From: Marten Seemann <martenseemann@gmail.com>
Date: Sat, 4 Apr 2020 11:55:59 +0700
Subject: [PATCH] don't log a metrics_update when sending a non-ack-eliciting
 packet

---
 internal/ackhandler/sent_packet_handler.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/internal/ackhandler/sent_packet_handler.go b/internal/ackhandler/sent_packet_handler.go
index 3e8c8e25e..690915a59 100644
--- a/internal/ackhandler/sent_packet_handler.go
+++ b/internal/ackhandler/sent_packet_handler.go
@@ -187,7 +187,7 @@ func (h *sentPacketHandler) SentPacket(packet *Packet) {
 	if isAckEliciting {
 		h.getPacketNumberSpace(packet.EncryptionLevel).history.SentPacket(packet)
 	}
-	if h.qlogger != nil {
+	if h.qlogger != nil && isAckEliciting {
 		h.qlogger.UpdatedMetrics(h.rttStats, h.congestion.GetCongestionWindow(), h.bytesInFlight, h.packetsInFlight())
 	}
 	if isAckEliciting || !h.peerCompletedAddressValidation {