修复某些平台下，udp connect后sendto时指定对端地址发送失败的问题

webrtc/WebRtcTransport.cpp

@@ -120,6 +120,10 @@ const RtcSession& WebRtcTransport::getSdp(SdpType type) const{
     }
 }
 
+RTC::TransportTuple* WebRtcTransport::getSelectedTuple() const{
+    return  _ice_server->GetSelectedTuple();
+}
+
 string getFingerprint(const string &algorithm_str, const std::shared_ptr<RTC::DtlsTransport> &transport){
     auto algorithm = RTC::DtlsTransport::GetFingerprintAlgorithm(algorithm_str);
     for (auto &finger_prints : transport->GetLocalFingerprints()) {
@@ -614,10 +618,27 @@ string WebRtcTransportImp::getOriginUrl(MediaSource &sender) const {
 }
 
 std::shared_ptr<SockInfo> WebRtcTransportImp::getOriginSock(MediaSource &sender) const {
-    return const_cast<WebRtcTransportImp *>(this)->_socket;
+    return const_cast<WebRtcTransportImp *>(this)->shared_from_this();
+}
+
+/////////////////////////////////////////////////////////////////////////////////////////////
+
+string WebRtcTransportImp::get_local_ip() {
+    return getSdp(SdpType::answer).media[0].candidate[0].address;
 }
 
-void WebRtcTransportImp::OnIceServerSelectedTuple(const RTC::IceServer *iceServer, RTC::TransportTuple *tuple) {
-    WebRtcTransport::OnIceServerSelectedTuple(iceServer, tuple);
-    _socket->setSendPeerAddr(tuple);
+uint16_t WebRtcTransportImp::get_local_port() {
+    return _socket->get_local_port();
 }
+
+string WebRtcTransportImp::get_peer_ip() {
+    return SockUtil::inet_ntoa(((struct sockaddr_in *) getSelectedTuple())->sin_addr);
+}
+
+uint16_t WebRtcTransportImp::get_peer_port() {
+    return ntohs(((struct sockaddr_in *) getSelectedTuple())->sin_port);
+}
+
+string WebRtcTransportImp::getIdentifier() const {
+    return StrPrinter << this;
+}
\ No newline at end of file

webrtc/WebRtcTransport.h

@@ -93,6 +93,7 @@ protected:
 
 protected:
     const RtcSession& getSdp(SdpType type) const;
+    RTC::TransportTuple* getSelectedTuple() const;
 
 private:
     void onSendSockData(const char *buf, size_t len, bool flush = true);
@@ -110,7 +111,7 @@ private:
 
 class RtpReceiverImp;
 
-class WebRtcTransportImp : public WebRtcTransport, public MediaSourceEvent, public std::enable_shared_from_this<WebRtcTransportImp>{
+class WebRtcTransportImp : public WebRtcTransport, public MediaSourceEvent, public SockInfo, public std::enable_shared_from_this<WebRtcTransportImp>{
 public:
     using Ptr = std::shared_ptr<WebRtcTransportImp>;
     ~WebRtcTransportImp() override;
@@ -139,8 +140,6 @@ protected:
     void onRtcp(const char *buf, size_t len) override;
     void onShutdown(const SockException &ex) override;
 
-    void OnIceServerSelectedTuple(const RTC::IceServer *iceServer, RTC::TransportTuple *tuple) override;
-
     ///////MediaSourceEvent override///////
     // 关闭
     bool close(MediaSource &sender, bool force) override;
@@ -153,6 +152,18 @@ protected:
     // 获取媒体源客户端相关信息
     std::shared_ptr<SockInfo> getOriginSock(MediaSource &sender) const override;
 
+    ///////SockInfo override///////
+    //获取本机ip
+    string get_local_ip() override;
+    //获取本机端口号
+    uint16_t get_local_port() override;
+    //获取对方ip
+    string get_peer_ip() override;
+    //获取对方端口号
+    uint16_t get_peer_port() override;
+    //获取标识符
+    string getIdentifier() const override;
+
 private:
     WebRtcTransportImp(const EventPoller::Ptr &poller);
     void onCreate() override;