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// Copyright (c) 2011 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.
#ifndef REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
#define REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
#include <string>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/task.h"
#include "remoting/jingle_glue/signal_strategy.h"
#include "remoting/proto/internal.pb.h"
#include "remoting/protocol/connection_to_host.h"
#include "remoting/protocol/message_reader.h"
#include "remoting/protocol/session.h"
#include "remoting/protocol/session_manager.h"
class MessageLoop;
namespace talk_base {
class NetworkManager;
class PacketSocketFactory;
} // namespace talk_base
namespace remoting {
class JingleThread;
class HostResolverFactory;
class PortAllocatorSessionFactory;
class XmppProxy;
class VideoPacket;
namespace protocol {
class ClientMessageDispatcher;
class ClientControlSender;
class ClientStub;
class HostControlSender;
class HostStub;
class InputSender;
class InputStub;
class SessionConfig;
class VideoReader;
class VideoStub;
class ConnectionToHost : public SignalStrategy::StatusObserver,
public SessionManager::Listener {
public:
enum State {
STATE_EMPTY,
STATE_CONNECTED,
STATE_AUTHENTICATED,
STATE_FAILED,
STATE_CLOSED,
};
class HostEventCallback {
public:
virtual ~HostEventCallback() {}
// Called when the network connection is opened.
virtual void OnConnectionOpened(ConnectionToHost* conn) = 0;
// Called when the network connection is closed.
virtual void OnConnectionClosed(ConnectionToHost* conn) = 0;
// Called when the network connection has failed.
virtual void OnConnectionFailed(ConnectionToHost* conn) = 0;
};
// Takes ownership of |network_manager| and |socket_factory|. Both
// |network_manager| and |socket_factory| may be set to NULL.
//
// TODO(sergeyu): Constructor shouldn't need thread here.
ConnectionToHost(MessageLoop* network_message_loop,
talk_base::NetworkManager* network_manager,
talk_base::PacketSocketFactory* socket_factory,
HostResolverFactory* host_resolver_factory,
PortAllocatorSessionFactory* session_factory,
bool allow_nat_traversal);
virtual ~ConnectionToHost();
virtual void Connect(scoped_refptr<XmppProxy> xmpp_proxy,
const std::string& your_jid,
const std::string& host_jid,
const std::string& host_public_key,
const std::string& access_code,
HostEventCallback* event_callback,
ClientStub* client_stub,
VideoStub* video_stub);
virtual void Disconnect(const base::Closure& shutdown_task);
virtual const SessionConfig* config();
virtual InputStub* input_stub();
virtual HostStub* host_stub();
// SignalStrategy::StatusObserver interface.
virtual void OnStateChange(
SignalStrategy::StatusObserver::State state) OVERRIDE;
virtual void OnJidChange(const std::string& full_jid) OVERRIDE;
// SessionManager::Listener interface.
virtual void OnSessionManagerInitialized() OVERRIDE;
virtual void OnIncomingSession(
Session* session,
SessionManager::IncomingSessionResponse* response) OVERRIDE;
// Called when the host accepts the client authentication.
void OnClientAuthenticated();
// Return the current state of ConnectionToHost.
State state() const;
private:
// Called on the jingle thread after we've successfully to XMPP server. Starts
// P2P connection to the host.
void InitSession();
// Callback for |session_|.
void OnSessionStateChange(Session::State state);
// Callback for VideoReader::Init().
void OnVideoChannelInitialized(bool successful);
void NotifyIfChannelsReady();
// Callback for |video_reader_|.
void OnVideoPacket(VideoPacket* packet);
void CloseOnError();
// Stops writing in the channels.
void CloseChannels();
MessageLoop* message_loop_;
scoped_ptr<talk_base::NetworkManager> network_manager_;
scoped_ptr<talk_base::PacketSocketFactory> socket_factory_;
scoped_ptr<HostResolverFactory> host_resolver_factory_;
scoped_ptr<PortAllocatorSessionFactory> port_allocator_session_factory_;
bool allow_nat_traversal_;
std::string host_jid_;
std::string host_public_key_;
std::string access_code_;
HostEventCallback* event_callback_;
// Stub for incoming messages.
ClientStub* client_stub_;
VideoStub* video_stub_;
scoped_ptr<SignalStrategy> signal_strategy_;
std::string local_jid_;
scoped_ptr<SessionManager> session_manager_;
scoped_ptr<Session> session_;
// Handlers for incoming messages.
scoped_ptr<VideoReader> video_reader_;
scoped_ptr<ClientMessageDispatcher> dispatcher_;
// Senders for outgoing messages.
scoped_ptr<InputSender> input_sender_;
scoped_ptr<HostControlSender> host_control_sender_;
// Internal state of the connection.
State state_;
// State of the channels.
bool control_connected_;
bool input_connected_;
bool video_connected_;
private:
DISALLOW_COPY_AND_ASSIGN(ConnectionToHost);
};
} // namespace protocol
} // namespace remoting
DISABLE_RUNNABLE_METHOD_REFCOUNT(remoting::protocol::ConnectionToHost);
#endif // REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
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