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// Copyright (c) 2010 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_SESSION_H_
#define REMOTING_PROTOCOL_SESSION_H_
#include <string>
#include "base/callback.h"
#include "remoting/protocol/buffered_socket_writer.h"
#include "remoting/protocol/session_config.h"
class MessageLoop;
class Task;
namespace net {
class Socket;
} // namespace net
namespace remoting {
namespace protocol {
// Generic interface for Chromotocol connection used by both client and host.
// Provides access to the connection channels, but doesn't depend on the
// protocol used for each channel.
// TODO(sergeyu): Remove refcounting?
class Session : public base::RefCountedThreadSafe<Session> {
public:
enum State {
INITIALIZING,
CONNECTING,
CONNECTED,
CLOSED,
FAILED,
};
typedef Callback1<State>::Type StateChangeCallback;
// Set callback that is called when state of the connection is changed.
// Must be called on the jingle thread only.
virtual void SetStateChangeCallback(StateChangeCallback* callback) = 0;
// Reliable PseudoTCP channels for this connection.
virtual net::Socket* control_channel() = 0;
virtual net::Socket* event_channel() = 0;
// TODO(sergeyu): Remove VideoChannel, and use RTP channels instead.
virtual net::Socket* video_channel() = 0;
// Unreliable channels for this connection.
virtual net::Socket* video_rtp_channel() = 0;
virtual net::Socket* video_rtcp_channel() = 0;
// TODO(sergeyu): Make it possible to create/destroy additional channels
// on-fly?
// JID of the other side.
virtual const std::string& jid() = 0;
// Message loop that must be used to access the channels of this connection.
virtual MessageLoop* message_loop() = 0;
// Configuration of the protocol that was sent or received in the
// session-initiate jingle message. Returned pointer is valid until
// connection is closed.
virtual const CandidateSessionConfig* candidate_config() = 0;
// Protocol configuration. Can be called only after session has been accepted.
// Returned pointer is valid until connection is closed.
virtual const SessionConfig* config() = 0;
// Set protocol configuration for an incoming session. Must be called
// on the host before the connection is accepted, from
// ChromotocolServer::IncomingConnectionCallback. Ownership of |config| is
// given to the connection.
virtual void set_config(const SessionConfig* config) = 0;
// The raw auth tokens from the session-initiate, or session-accept stanzas.
virtual const std::string& initiator_token() = 0;
virtual void set_initiator_token(const std::string& initiator_token) = 0;
virtual const std::string& receiver_token() = 0;
virtual void set_receiver_token(const std::string& receiver_token) = 0;
// Closes connection. Callbacks are guaranteed not to be called after
// |closed_task| is executed.
virtual void Close(Task* closed_task) = 0;
protected:
friend class base::RefCountedThreadSafe<Session>;
Session() { }
virtual ~Session() { }
private:
DISALLOW_COPY_AND_ASSIGN(Session);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_SESSION_H_
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