优化随机端口分配逻辑

src/Rtp/RtpServer.cpp

@@ -99,9 +99,6 @@ void RtpServer::start(uint16_t local_port, const string &stream_id, bool enable_
         //随机端口，rtp端口采用偶数
         auto pair = std::make_pair(rtp_socket, rtcp_socket);
         makeSockPair(pair, local_ip, re_use_port);
-        //取偶数端口
-        rtp_socket = pair.first;
-        rtcp_socket = pair.second;
     } else if (!rtp_socket->bindUdpSock(local_port, local_ip, re_use_port)) {
         //用户指定端口
         throw std::runtime_error(StrPrinter << "创建rtp端口 " << local_ip << ":" << local_port << " 失败:" << get_uv_errmsg(true));

src/Rtsp/Rtsp.cpp

@@ -410,9 +410,6 @@ private:
 };
 
 void makeSockPair(std::pair<Socket::Ptr, Socket::Ptr> &pair, const string &local_ip, bool re_use_port, bool is_udp) {
-    //全局互斥锁保护，防止端口重复分配
-    static recursive_mutex s_mtx;
-    lock_guard<recursive_mutex> lck(s_mtx);
     int try_count = 0;
     while (true) {
         try {