Update prflx candidates' generation when setting ICE credentials.

webrtc/p2p/base/port.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 556 matching lines @@
 
   // Invoked when Connection receives STUN error response with 487 code.
   void HandleRoleConflictFromPeer();
 
   State state() const { return state_; }
 
   IceMode remote_ice_mode() const { return remote_ice_mode_; }
 
   uint32_t ComputeNetworkCost() const;
 
-  // Update the ICE password of the remote candidate if |ice_ufrag| matches
-  // the candidate's ufrag, and the candidate's passwrod has not been set.
-  void MaybeSetRemoteIceCredentials(const std::string& ice_ufrag,
-                                    const std::string& ice_pwd);
+  // Update the ICE password and/or generation of the remote candidate if a
+  // ufrag in |remote_ice_parameters| matches the candidate's ufrag, and the
+  // candidate's password and/or ufrag has not been set.
+  // |remote_ice_parameters| should be a list of known ICE parameters ordered
+  // by generation.
+  void MaybeSetRemoteIceCredentialsAndGeneration(const std::string& ice_ufrag,
+                                                 const std::string& ice_pwd,
+                                                 int generation);
 
   // If |remote_candidate_| is peer reflexive and is equivalent to
   // |new_candidate| except the type, update |remote_candidate_| to
   // |new_candidate|.
   void MaybeUpdatePeerReflexiveCandidate(const Candidate& new_candidate);
 
   // Returns the last received time of any data, stun request, or stun
   // response in milliseconds
   int64_t last_received() const;
 
@@ skipping 76 matching lines @@
            const rtc::PacketOptions& options) override;
   int GetError() override { return error_; }
 
  private:
   int error_ = 0;
 };
 
 }  // namespace cricket
 
 #endif  // WEBRTC_P2P_BASE_PORT_H_