From 44ba6aadd9243eb1067a6cda34ab34a248a71e17 Mon Sep 17 00:00:00 2001
From: Cuong Manh Le <cuong@windscribe.com>
Date: Fri, 27 Oct 2023 22:02:19 +0700
Subject: [PATCH] internal/clientinfo: do not complain about net.ErrClosed

The probeLoop may have closed the connection before readLoop return, and
we don't care about this error. So prevent it from annoying the log.
---
 internal/clientinfo/mdns.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/internal/clientinfo/mdns.go b/internal/clientinfo/mdns.go
index 5875b69..9a5fa85 100644
--- a/internal/clientinfo/mdns.go
+++ b/internal/clientinfo/mdns.go
@@ -123,6 +123,10 @@ func (m *mdns) readLoop(conn *net.UDPConn) {
 			if err, ok := err.(*net.OpError); ok && (err.Timeout() || err.Temporary()) {
 				continue
 			}
+			// Do not complain about use of closed network connection.
+			if errors.Is(err, net.ErrClosed) {
+				return
+			}
 			ctrld.ProxyLogger.Load().Debug().Err(err).Msg("mdns readLoop error")
 			return
 		}