remoting/jingle_glue/jingle_info_request.h

   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 #include "third_party/libjingle/source/talk/base/sigslot.h"
  17
  18 namespace buzz {
  19 class XmlElement;
  20 }  // namespace buzz
  21
  22 namespace talk_base {
  23 class SocketAddress;
  24 }  // namespace talk_base
  25
  26 namespace remoting {
  27
  28 class SignalStrategy;
  29
  30 // JingleInfoRequest handles requesting STUN/Relay information from
  31 // the Google Talk network. The query is made when Send() is
  32 // called. The callback given to Send() is called when response to the
  33 // request is received.
  34 //
  35 // This class is not threadsafe and should be used on the same thread it is
  36 // created on.
  37 //
  38 // TODO(ajwong): Add support for a timeout.
  39 class JingleInfoRequest : public sigslot::has_slots<> {
  40  public:
  41   // Callback to receive the Jingle configuration settings.  The arguments are
  42   // passed by pointer so the receive may call swap on them.  The receiver does
  43   // NOT own the arguments, which are guaranteed only to be alive for the
  44   // duration of the callback.
  45   typedef base::Callback<void (
  46       const std::string&, const std::vector<std::string>&,
  47       const std::vector<talk_base::SocketAddress>&)> OnJingleInfoCallback;
  48
  49   explicit JingleInfoRequest(SignalStrategy* signal_strategy);
  50   virtual ~JingleInfoRequest();
  51
  52   void Send(const OnJingleInfoCallback& callback);
  53
  54  private:
  55   struct PendingDnsRequest;
  56
  57   void OnResponse(IqRequest* request, const buzz::XmlElement* stanza);
  58
  59   IqSender iq_sender_;
  60   scoped_ptr<IqRequest> request_;
  61   OnJingleInfoCallback on_jingle_info_cb_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(JingleInfoRequest);
  64 };
  65
  66 }  // namespace remoting
  67
  68 #endif  // REMOTING_JINGLE_GLUE_JINGLE_INFO_REQUEST_H_