From c811b8e558e2c827857f9cbcea4c7e1a40ae6589 Mon Sep 17 00:00:00 2001
From: Toby <tobyxdd@gmail.com>
Date: Fri, 3 Dec 2021 21:50:07 -0800
Subject: [PATCH] feat: make sure SOCKS5 listen address has a specified IP (for
 UDP to work)

---
 pkg/socks5/server.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/socks5/server.go b/pkg/socks5/server.go
index d628e9d..a62292e 100644
--- a/pkg/socks5/server.go
+++ b/pkg/socks5/server.go
@@ -52,6 +52,9 @@ func NewServer(hyClient *core.Client, transport transport.Transport, addr string
 	if err != nil {
 		return nil, err
 	}
+	if tAddr.IP == nil || tAddr.IP.IsUnspecified() {
+		return nil, errors.New("listen address must have a specified IP")
+	}
 	m := socks5.MethodNone
 	if authFunc != nil {
 		m = socks5.MethodUsernamePassword