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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// The XmppSignalStrategy encapsulates all the logic to perform the signaling
// STUN/ICE for jingle via a direct XMPP connection.
//
// This class is not threadsafe.
#ifndef REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
#define REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
#include "remoting/signaling/signal_strategy.h"
#include <vector>
#include "base/compiler_specific.h"
#include "base/observer_list.h"
#include "base/threading/non_thread_safe.h"
#include "base/timer/timer.h"
#include "third_party/libjingle/source/talk/xmpp/xmppclient.h"
#include "third_party/webrtc/base/sigslot.h"
namespace net {
class ClientSocketFactory;
class URLRequestContextGetter;
} // namespace net
namespace rtc {
class TaskRunner;
} // namespace rtc
namespace remoting {
class JingleThread;
class XmppSignalStrategy : public base::NonThreadSafe,
public SignalStrategy,
public buzz::XmppStanzaHandler,
public sigslot::has_slots<> {
public:
// XMPP Server configuration for XmppSignalStrategy.
struct XmppServerConfig {
XmppServerConfig();
~XmppServerConfig();
std::string host;
int port;
bool use_tls;
std::string username;
std::string auth_token;
std::string auth_service;
};
XmppSignalStrategy(
net::ClientSocketFactory* socket_factory,
scoped_refptr<net::URLRequestContextGetter> request_context_getter,
const XmppServerConfig& xmpp_server_config);
virtual ~XmppSignalStrategy();
// SignalStrategy interface.
virtual void Connect() override;
virtual void Disconnect() override;
virtual State GetState() const override;
virtual Error GetError() const override;
virtual std::string GetLocalJid() const override;
virtual void AddListener(Listener* listener) override;
virtual void RemoveListener(Listener* listener) override;
virtual bool SendStanza(scoped_ptr<buzz::XmlElement> stanza) override;
virtual std::string GetNextId() override;
// buzz::XmppStanzaHandler interface.
virtual bool HandleStanza(const buzz::XmlElement* stanza) override;
// This method is used to update the auth info (for example when the OAuth
// access token is renewed). It is OK to call this even when we are in the
// CONNECTED state. It will be used on the next Connect() call.
void SetAuthInfo(const std::string& username,
const std::string& auth_token,
const std::string& auth_service);
// Use this method to override the default resource name used (optional).
// This will be used on the next Connect() call.
void SetResourceName(const std::string& resource_name);
private:
static buzz::PreXmppAuth* CreatePreXmppAuth(
const buzz::XmppClientSettings& settings);
void OnConnectionStateChanged(buzz::XmppEngine::State state);
void SetState(State new_state);
void SendKeepAlive();
net::ClientSocketFactory* socket_factory_;
scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
std::string resource_name_;
scoped_ptr<rtc::TaskRunner> task_runner_;
buzz::XmppClient* xmpp_client_;
XmppServerConfig xmpp_server_config_;
State state_;
Error error_;
ObserverList<Listener, true> listeners_;
base::RepeatingTimer<XmppSignalStrategy> keep_alive_timer_;
DISALLOW_COPY_AND_ASSIGN(XmppSignalStrategy);
};
} // namespace remoting
#endif // REMOTING_SIGNALING_XMPP_SIGNAL_STRATEGY_H_
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