visitor: fix panic
@@ -259,7 +259,11 @@ func (sv *XtcpVisitor) handleConn(userConn frpNet.Conn) {
sv.Trace("send all detect msg done")
// Listen for visitorConn's address and wait for client connection.
- lConn, _ := net.ListenUDP("udp", laddr)
+ lConn, err := net.ListenUDP("udp", laddr)
+ if err != nil {
+ sv.Error("listen on visitorConn's local adress error: %v", err)
+ return
+ }
lConn.SetReadDeadline(time.Now().Add(5 * time.Second))
sidBuf := pool.GetBuf(1024)
n, _, err = lConn.ReadFromUDP(sidBuf)
