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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
      6 #define REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
      7 
      8 #include <set>
      9 #include <string>
     10 #include <vector>
     11 
     12 #include "base/basictypes.h"
     13 #include "base/callback.h"
     14 #include "base/memory/scoped_ptr.h"
     15 #include "remoting/jingle_glue/iq_sender.h"
     16 
     17 namespace buzz {
     18 class XmlElement;
     19 }  // namespace buzz
     20 
     21 namespace talk_base {
     22 class SocketAddress;
     23 }  // namespace talk_base
     24 
     25 namespace remoting {
     26 
     27 class SignalStrategy;
     28 
     29 // JingleInfoRequest handles requesting STUN/Relay information from
     30 // the Google Talk network. The query is made when Send() is
     31 // called. The callback given to Send() is called when response to the
     32 // request is received.
     33 //
     34 // This class is not threadsafe and should be used on the same thread it is
     35 // created on.
     36 class JingleInfoRequest {
     37  public:
     38   // Callback to receive the Jingle configuration settings. All fields are empty
     39   // if the request has timed out.
     40   typedef base::Callback<void(const std::string& relay_token,
     41                               const std::vector<std::string>& relay_servers,
     42                               const std::vector<talk_base::SocketAddress>&
     43                                   stun_servers)> OnJingleInfoCallback;
     44 
     45   explicit JingleInfoRequest(SignalStrategy* signal_strategy);
     46   virtual ~JingleInfoRequest();
     47 
     48   void Send(const OnJingleInfoCallback& callback);
     49 
     50  private:
     51   struct PendingDnsRequest;
     52 
     53   void OnResponse(IqRequest* request, const buzz::XmlElement* stanza);
     54 
     55   IqSender iq_sender_;
     56   scoped_ptr<IqRequest> request_;
     57   OnJingleInfoCallback on_jingle_info_cb_;
     58 
     59   DISALLOW_COPY_AND_ASSIGN(JingleInfoRequest);
     60 };
     61 
     62 }  // namespace remoting
     63 
     64 #endif  // REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_
     65