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/*
* libjingle
* Copyright 2004--2005, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _SESSION_H_
#define _SESSION_H_
#include "talk/base/socketaddress.h"
#include "talk/p2p/base/sessiondescription.h"
#include "talk/p2p/base/sessionmanager.h"
#include "talk/p2p/base/sessionmessage.h"
#include "talk/p2p/base/socketmanager.h"
#include "talk/p2p/base/p2psocket.h"
#include "talk/p2p/base/port.h"
#include <string>
namespace cricket {
class SessionManager;
class SocketManager;
// A specific Session created by the SessionManager
// A Session manages signaling for session setup and tear down, and connectivity
// with P2PSockets
class Session : public MessageHandler, public sigslot::has_slots<> {
public:
enum State {
STATE_INIT = 0,
STATE_SENTINITIATE, // sent initiate, waiting for Accept or Reject
STATE_RECEIVEDINITIATE, // received an initiate. Call Accept or Reject
STATE_SENTACCEPT, // sent accept. begin connectivity establishment
STATE_RECEIVEDACCEPT, // received accept. begin connectivity establishment
STATE_SENTMODIFY, // sent modify, waiting for Accept or Reject
STATE_RECEIVEDMODIFY, // received modify, call Accept or Reject
STATE_SENTREJECT, // sent reject after receiving initiate
STATE_RECEIVEDREJECT, // received reject after sending initiate
STATE_SENTREDIRECT, // sent direct after receiving initiate
STATE_SENTTERMINATE, // sent terminate (any time / either side)
STATE_RECEIVEDTERMINATE, // received terminate (any time / either side)
STATE_INPROGRESS, // session accepted and in progress
};
enum Error {
ERROR_NONE = 0, // no error
ERROR_TIME, // no response to signaling
ERROR_RESPONSE, // error during signaling
ERROR_NETWORK, // network error, could not allocate network resources
};
Session(SessionManager *session_manager, const std::string &name, const SessionID& id);
~Session();
// From MessageHandler
void OnMessage(Message *pmsg);
P2PSocket *CreateSocket(const std::string & name);
void DestroySocket(P2PSocket *socket);
bool Initiate(const std::string &to, const SessionDescription *description);
bool Accept(const SessionDescription *description);
bool Modify(const SessionDescription *description);
bool Reject();
bool Redirect(const std::string& target);
bool Terminate();
SessionManager *session_manager();
const std::string &name();
const std::string &remote_address();
bool initiator();
const SessionID& id();
const SessionDescription *description();
const SessionDescription *remote_description();
State state();
Error error();
void OnSignalingReady();
void OnIncomingMessage(const SessionMessage &m);
void OnIncomingError(const SessionMessage &m);
sigslot::signal2<Session *, State> SignalState;
sigslot::signal2<Session *, Error> SignalError;
sigslot::signal2<Session *, const SessionMessage &> SignalOutgoingMessage;
sigslot::signal0<> SignalRequestSignaling;
private:
void SendSessionMessage(SessionMessage::Type type,
const SessionDescription* description,
const std::vector<Candidate>* candidates,
SessionMessage::Cookie* redirect_cookie);
void OnCandidatesReady(const std::vector<Candidate>& candidates);
void OnNetworkError();
void OnSocketState();
void OnRequestSignaling();
void OnRedirectMessage(const SessionMessage &m);
void set_state(State state);
void set_error(Error error);
bool initiator_;
SessionManager *session_manager_;
SessionID id_;
SocketManager *socket_manager_;
std::string name_;
std::string remote_address_;
const SessionDescription *description_;
const SessionDescription *remote_description_;
std::string redirect_target_;
State state_;
Error error_;
CriticalSection crit_;
};
} // namespace cricket
#endif // _SESSION_H_
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