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// Copyright (c) 2012 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/macros.h"
#include "remoting/protocol/errors.h"
#include "remoting/protocol/session_config.h"
#include "remoting/protocol/transport.h"
namespace buzz {
class XmlElement;
} // namespace buzz
namespace remoting {
namespace protocol {
class Authenicator;
class StreamChannelFactory;
class Transport;
struct TransportRoute;
// Session is responsible for initializing and authenticating both incoming and
// outgoing connections. It uses TransportInfoSink interface to pass
// transport-info messages to the transport.
class Session {
public:
enum State {
// Created, but not connecting yet.
INITIALIZING,
// Sent session-initiate, but haven't received session-accept.
CONNECTING,
// Received session-initiate, but haven't sent session-accept.
ACCEPTING,
// Session has been accepted and is pending authentication.
ACCEPTED,
// Session has started authenticating.
AUTHENTICATING,
// Session has been connected and authenticated.
AUTHENTICATED,
// Session has been closed.
CLOSED,
// Connection has failed.
FAILED,
};
class EventHandler {
public:
EventHandler() {}
virtual ~EventHandler() {}
// Called after session state has changed. It is safe to destroy
// the session from within the handler if |state| is AUTHENTICATING
// or CLOSED or FAILED.
virtual void OnSessionStateChange(State state) = 0;
};
Session() {}
virtual ~Session() {}
// Set event handler for this session. |event_handler| must outlive
// this object.
virtual void SetEventHandler(EventHandler* event_handler) = 0;
// Returns error code for a failed session.
virtual ErrorCode error() = 0;
// JID of the other side.
virtual const std::string& jid() = 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;
// Sets Transport to be used by the session. Must be called before the
// session becomes AUTHENTICATED. The transport must outlive the session.
virtual void SetTransport(Transport* transport) = 0;
// Closes connection. EventHandler is guaranteed not to be called after this
// method returns. |error| specifies the error code in case when the session
// is being closed due to an error.
virtual void Close(ErrorCode error) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(Session);
};
} // namespace protocol
} // namespace remoting
#endif // REMOTING_PROTOCOL_SESSION_H_
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