[tor-commits] [snowflake/master] Don't log io.ErrClosedPipe in server

[cohosh at torproject.org]

commit 720d2b8eb7be9e2a41126624083054a66017d452
Author: Cecylia Bocovich <cohosh at torproject.org>
Date:   Mon Mar 8 21:50:42 2021 -0500

    Don't log io.ErrClosedPipe in server
    
    These errors are triggered in three places when the OR connection times
    out. They don't tell us anything useful and are filling up our logs.
---
 server/server.go | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/server/server.go b/server/server.go
index 3b263d0..b3fa04a 100644
--- a/server/server.go
+++ b/server/server.go
@@ -73,7 +73,7 @@ func proxy(local *net.TCPConn, conn net.Conn) {
 	wg.Add(2)
 
 	go func() {
-		if _, err := io.Copy(conn, local); err != nil {
+		if _, err := io.Copy(conn, local); err != nil && err != io.ErrClosedPipe {
 			log.Printf("error copying ORPort to WebSocket %v", err)
 		}
 		if err := local.CloseRead(); err != nil {
@@ -83,7 +83,7 @@ func proxy(local *net.TCPConn, conn net.Conn) {
 		wg.Done()
 	}()
 	go func() {
-		if _, err := io.Copy(local, conn); err != nil {
+		if _, err := io.Copy(local, conn); err != nil && err != io.ErrClosedPipe {
 			log.Printf("error copying WebSocket to ORPort %v", err)
 		}
 		if err := local.CloseWrite(); err != nil {
@@ -352,7 +352,7 @@ func acceptSessions(ln *kcp.Listener) error {
 		go func() {
 			defer conn.Close()
 			err := acceptStreams(conn)
-			if err != nil {
+			if err != nil && err != io.ErrClosedPipe {
 				log.Printf("acceptStreams: %v", err)
 			}
 		}()