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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/message_reader.h"
#include "remoting/protocol/session.h"
#include "remoting/protocol/session_manager.h"
namespace base {
class MessageLoopProxy;
} // namespace base
namespace pp {
class Instance;
} // namespace pp
namespace remoting {
class XmppProxy;
class VideoPacket;
namespace protocol {
class ClientControlDispatcher;
class ClientEventDispatcher;
class ClientStub;
class HostStub;
class InputStub;
class SessionConfig;
class VideoReader;
class VideoStub;
class ConnectionToHost : public SignalStrategy::StatusObserver,
public SessionManager::Listener {
public:
enum State {
CONNECTING,
CONNECTED,
FAILED,
CLOSED,
};
enum Error {
OK,
HOST_IS_OFFLINE,
SESSION_REJECTED,
INCOMPATIBLE_PROTOCOL,
NETWORK_FAILURE,
};
class HostEventCallback {
public:
virtual ~HostEventCallback() {}
// Called when state of the connection changes.
virtual void OnConnectionState(State state, Error error) = 0;
};
ConnectionToHost(base::MessageLoopProxy* message_loop,
pp::Instance* pp_instance,
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);
// Callbacks for channel initialization
void OnChannelInitialized(bool successful);
void NotifyIfChannelsReady();
// Callback for |video_reader_|.
void OnVideoPacket(VideoPacket* packet);
void CloseOnError(Error error);
// Stops writing in the channels.
void CloseChannels();
void SetState(State state, Error error);
scoped_refptr<base::MessageLoopProxy> message_loop_;
pp::Instance* pp_instance_;
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_;
scoped_ptr<VideoReader> video_reader_;
scoped_ptr<ClientControlDispatcher> control_dispatcher_;
scoped_ptr<ClientEventDispatcher> event_dispatcher_;
// Internal state of the connection.
State state_;
Error error_;
private:
DISALLOW_COPY_AND_ASSIGN(ConnectionToHost);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
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