refactor: silence connection buffer size override errors

Signed-off-by: Christian Stewart <christian@aperture.us>

sys_conn.go

@@ -1,11 +1,7 @@
 package quic
 
 import (
-	"log"
 	"net"
-	"os"
-	"strconv"
-	"strings"
 	"syscall"
 	"time"
 
@@ -28,24 +24,28 @@ var _ OOBCapablePacketConn = &net.UDPConn{}
 
 func wrapConn(pc net.PacketConn) (rawConn, error) {
 	if err := setReceiveBuffer(pc); err != nil {
-		if !strings.Contains(err.Error(), "use of closed network connection") {
-			setBufferWarningOnce.Do(func() {
-				if disable, _ := strconv.ParseBool(os.Getenv("QUIC_GO_DISABLE_RECEIVE_BUFFER_WARNING")); disable {
-					return
-				}
-				log.Printf("%s. See /~https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.", err)
-			})
-		}
+		/*
+			if !strings.Contains(err.Error(), "use of closed network connection") {
+				setBufferWarningOnce.Do(func() {
+					if disable, _ := strconv.ParseBool(os.Getenv("QUIC_GO_DISABLE_RECEIVE_BUFFER_WARNING")); disable {
+						return
+					}
+					log.Printf("%s. See /~https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.", err)
+				})
+			}
+		*/
 	}
 	if err := setSendBuffer(pc); err != nil {
-		if !strings.Contains(err.Error(), "use of closed network connection") {
-			setBufferWarningOnce.Do(func() {
-				if disable, _ := strconv.ParseBool(os.Getenv("QUIC_GO_DISABLE_RECEIVE_BUFFER_WARNING")); disable {
-					return
-				}
-				log.Printf("%s. See /~https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.", err)
-			})
-		}
+		/*
+			if !strings.Contains(err.Error(), "use of closed network connection") {
+				setBufferWarningOnce.Do(func() {
+					if disable, _ := strconv.ParseBool(os.Getenv("QUIC_GO_DISABLE_RECEIVE_BUFFER_WARNING")); disable {
+						return
+					}
+					log.Printf("%s. See /~https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes for details.", err)
+				})
+			}
+		*/
 	}
 
 	conn, ok := pc.(interface {

transport.go

@@ -373,9 +373,6 @@ func (t *Transport) close(e error) {
 	t.closed = true
 }
 
-// only print warnings about the UDP receive buffer size once
-var setBufferWarningOnce sync.Once
-
 func (t *Transport) listen(conn rawConn) {
 	defer close(t.listening)