Refactor connection create process

src/ice/ice_transmission.h

@@ -0,0 +1,66 @@
+#ifndef _ICE_TRANSMISSION_H_
+#define _ICE_TRANSMISSION_H_
+
+#include <iostream>
+
+#include "ice_agent.h"
+#include "ws_transmission.h"
+
+class IceTransmission {
+ public:
+  IceTransmission(WsTransmission *ice_ws_transmission,
+                  std::function<void(const char *, size_t)> on_receive_ice_msg);
+
+  ~IceTransmission();
+
+  int InitIceTransmission(std::string &ip, int port);
+  int InitIceTransmission(std::string &ip, int port, std::string const &id);
+
+  int DestroyIceTransmission();
+
+  int CreateTransmission(const std::string &transmission_id);
+  int JoinTransmission(const std::string &transmission_id);
+
+  int SendData(const char *data, size_t size);
+
+  void OnReceiveUserData(const char *data, size_t size);
+
+  void OnReceiveMessage(const std::string &msg);
+
+ private:
+  int GatherCandidates();
+
+  int GetLocalSdp();
+
+  int QueryRemoteSdp(std::string transmission_id);
+
+  int SetRemoteSdp(const std::string &remote_sdp);
+
+  int AddRemoteCandidate(const std::string &remote_candidate);
+
+  int CreateOffer();
+
+  int SendOffer();
+
+  int CreateAnswer();
+
+  int SendAnswer();
+
+  int SendOfferLocalCandidate(const std::string &remote_candidate);
+
+  int SendAnswerLocalCandidate(const std::string &remote_candidate);
+
+ private:
+  IceAgent *ice_agent_ = nullptr;
+  WsTransmission *ice_ws_transport_ = nullptr;
+  std::function<void(const char *, size_t)> on_receive_ice_msg_cb_ = nullptr;
+  std::string local_sdp_;
+  std::string remote_sdp_;
+  std::string local_candidates_;
+  std::string remote_candidates_;
+  unsigned int connection_id_ = 0;
+  std::string transmission_id_ = "";
+  bool offer_peer_ = true;
+};
+
+#endif