优化连接管理和日志记录

server/fwd/socks/request.go

@@ -335,13 +335,14 @@ func sendReply(w io.Writer, resp uint8, addr *AddrSpec) error {
 	return err
 }
 
-func SendSuccess(user net.Conn, target net.Conn) {
+func SendSuccess(user net.Conn, target net.Conn) error {
 	local := target.LocalAddr().(*net.TCPAddr)
 	bind := AddrSpec{IP: local.IP, Port: local.Port}
 	err := sendReply(user, successReply, &bind)
 	if err != nil {
-		slog.Error("Failed to send reply", err)
+		return err
 	}
+	return nil
 }
 
 type ProxyConn struct {