Change UDP session timeout to 2m and make it configurable

main.go

@@ -24,6 +24,7 @@ import (
 )
 
 var version = "dev"
+var udpTimeout time.Duration
 
 func main() {
  forwards := flag.String("fwd", "", "TCP/UDP forwarding list (<tcp|udp>:[local-ip]:local-port:remote-ip:remote-port,...)")
@@ -37,6 +38,7 @@ func main() {
  wgKeepalive := flag.Int("wg-keepalive", 0, "Wireguard keepalive")
  logLevelString := flag.String("log-level", "info", "Log level")
  showVersion := flag.Bool("version", false, "Show version")
+ flag.DurationVar(&udpTimeout, "udp-timeout", 2*time.Minute, "UDP timeout")
  flag.Parse()
 
  if *showVersion {
@@ -337,7 +339,7 @@ func forwardUDP(ctx context.Context, wg *sync.WaitGroup, lNet netOp, lAddr strin
 
  buffer := make([]byte, 1392)
  for {
- remote.SetReadDeadline(time.Now().Add(3 * time.Second))
+ remote.SetReadDeadline(time.Now().Add(udpTimeout))
  n, err = remote.Read(buffer)
  if err != nil {
  logrus.Debugf("Error reading from UDP socket: %s", err)