remoting/signaling/push_notification_subscriber.h

   1 // Copyright 2015 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_HOST_GCD_NOTIFICATION_SUBSCRIBER_H_
   6 #define REMOTING_HOST_GCD_NOTIFICATION_SUBSCRIBER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "remoting/signaling/signal_strategy.h"
  14
  15 namespace remoting {
  16
  17 class IqSender;
  18 class IqRequest;
  19
  20 // An object that subscribes to push notifications using an XMPP
  21 // channel.  The notifications themselves are ignored, but creating a
  22 // subscription is necessary, e.g., for GCD to see a device as online.
  23 class PushNotificationSubscriber : public SignalStrategy::Listener {
  24  public:
  25   struct Subscription {
  26     Subscription();
  27     ~Subscription();
  28
  29     std::string channel;
  30     std::string from;
  31   };
  32
  33   typedef std::vector<Subscription> SubscriptionList;
  34
  35   PushNotificationSubscriber(SignalStrategy* signal_strategy,
  36                              const SubscriptionList& subscriptions);
  37   ~PushNotificationSubscriber() override;
  38
  39  private:
  40   // SignalStrategy::Listener interface.
  41   void OnSignalStrategyStateChange(SignalStrategy::State state) override;
  42   bool OnSignalStrategyIncomingStanza(const buzz::XmlElement* stanza) override;
  43
  44   void Subscribe(const Subscription& subscription);
  45   void OnSubscriptionResult(IqRequest* request,
  46                             const buzz::XmlElement* response);
  47
  48   SignalStrategy* signal_strategy_;
  49   SubscriptionList subscriptions_;
  50   scoped_ptr<IqSender> iq_sender_;
  51   scoped_ptr<IqRequest> iq_request_;
  52
  53   DISALLOW_COPY_AND_ASSIGN(PushNotificationSubscriber);
  54 };
  55
  56 }  // namespace remoting
  57
  58 #endif  // REMOTING_HOST_GCD_NOTIFICATION_SUBSCRIBER_H_