Add the URL attribute to cricket::Candiate. (Objc wrapper)

webrtc/api/jsep.h

 /*
  *  Copyright 2012 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 41 matching lines @@
  public:
   virtual ~IceCandidateInterface() {}
   // If present, this is the value of the "a=mid" attribute of the candidate's
   // m= section in SDP, which identifies the m= section.
   virtual std::string sdp_mid() const = 0;
   // This indicates the index (starting at zero) of m= section this candidate
   // is assocated with. Needed when an endpoint doesn't support MIDs.
   virtual int sdp_mline_index() const = 0;
   // Only for use internally.
   virtual const cricket::Candidate& candidate() const = 0;
+  // The URL of the ICE server which this candidate was gathered from.
+  // TODO(zhihuang): Remove the default implementation once the subclasses
+  // implement this method.
+  virtual std::string server_url() const { return ""; }
   // Creates a SDP-ized form of this candidate.
   virtual bool ToString(std::string* out) const = 0;
 };
 
 // Creates a IceCandidateInterface based on SDP string.
 // Returns NULL if the sdp string can't be parsed.
 // |error| may be NULL.
 IceCandidateInterface* CreateIceCandidate(const std::string& sdp_mid,
                                           int sdp_mline_index,
                                           const std::string& sdp,
@@ skipping 90 matching lines @@
   virtual void OnSuccess() = 0;
   virtual void OnFailure(const std::string& error) = 0;
 
  protected:
   ~SetSessionDescriptionObserver() {}
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_API_JSEP_H_