void SIPNict::handleRetransmitRequest()
{
SIPTransaction::Ptr pTransaction = static_cast<SIPTransaction::WeakPtr*>(_owner)->lock();
if (!pTransaction)
return;
if (pTransaction->getState() == SIPTransaction::TRN_STATE_TERMINATED)
return;
if (pTransaction->getState() <= PROCEEDING)
{
if (pTransaction->transport()->isReliableTransport())
pTransaction->transport()->writeMessage(_pRequest);
else
pTransaction->transport()->writeMessage(_pRequest,
pTransaction->remoteAddress().toString(),
OSS::string_from_number<unsigned short>(pTransaction->remoteAddress().getPort()));
//
// Restart Timer E with a compounded value
//
if (_timerEMultiplier == 0)
_timerEMultiplier = 2;
else
_timerEMultiplier = 4;
if ( pTransaction->getState() != PROCEEDING)
_timerEValue = _timerEValue * _timerEMultiplier > _timerProps.timerT2() ? _timerProps.timerT2() : _timerProps.timerT1() *_timerEMultiplier;
else
_timerEValue = _timerProps.timerT2();
startTimerE(_timerEValue);
}
}
bool SIPNict::isCompleted() const
{
SIPTransaction::Ptr pTransaction = static_cast<SIPTransaction::WeakPtr*>(_owner)->lock();
if (!pTransaction)
return true; /// If we can't lock the transaction pointer it means it is termianted
return pTransaction->getState() >= COMPLETED;
}
void SIPNict::handleRequestTimeout()
{
SIPTransaction::Ptr pTransaction = static_cast<SIPTransaction::WeakPtr*>(_owner)->lock();
if (!pTransaction)
return;
int state = pTransaction->getState();
if (state == SIPTransaction::TRN_STATE_TERMINATED || state == COMPLETED)
return;
cancelTimerK();
cancelTimerE();
cancelTimerF();
pTransaction->handleTimeoutNICT();
pTransaction->terminate();
}
bool SIPNict::onSendMessage(SIPMessage::Ptr pMsg)
{
SIPTransaction::Ptr pTransaction = static_cast<SIPTransaction::WeakPtr*>(_owner)->lock();
if (!pTransaction)
return false;
if (pTransaction->getState() == SIPTransaction::TRN_STATE_IDLE)
{
startTimerMaxLifetime(300000); /// five minutes
_pRequest = pMsg;
pTransaction->setState(TRYING);
std::string sTimeout;
if (pMsg->getProperty(OSS::PropertyMap::PROP_TransactionTimeout, sTimeout) && !sTimeout.empty())
{
_timerEValue = OSS::string_to_number<unsigned long>(sTimeout.c_str()) / 64;
}
else
{
_timerEValue = _timerProps.timerE();
}
if (!pTransaction->transport()->isReliableTransport())
{
startTimerE(_timerEValue);
startTimerF(_timerEValue*64);
}
else
{
startTimerF(RELIABLE_TIMER_F_VALUE);
}
return true;
}
return false;
}
void SIPNict::onReceivedMessage(SIPMessage::Ptr pMsg, SIPTransportSession::Ptr pTransport)
{
SIPTransaction::Ptr pTransaction = static_cast<SIPTransaction::WeakPtr*>(_owner)->lock();
if (!pTransaction)
return;
int state = pTransaction->getState();
if (!pMsg->isResponse() || state == SIPTransaction::TRN_STATE_TERMINATED || state == COMPLETED)
return;
bool is2xx = pMsg->is2xx();
SIPTransaction::Ptr pParent = pTransaction->getParent();
switch (pTransaction->getState())
{
case SIPTransaction::TRN_STATE_IDLE:
case TRYING:
if (pMsg->is1xx())
{
pTransaction->setState(PROCEEDING);
if (!pTransaction->isParent() && pParent && pParent->getState() < PROCEEDING)
pParent->setState(PROCEEDING);
pTransaction->informTU(pMsg, pTransport);
}
else
{
if (pTransaction->isParent() && !is2xx)
{
//
// If we are the parent or this is and error response
// cancel e and f timers
//
cancelTimerE();
cancelTimerF();
}
else if (!pTransaction->isParent() && is2xx)
{
//
// If this is a branch and it is a 2xx reponse,
// then cancel both parents timers as sell
//
cancelTimerE();
cancelTimerF();
if (pParent)
{
pParent->fsm()->cancelTimerE();
pParent->fsm()->cancelTimerF();
pParent->setState(COMPLETED);
}
}
else if (!pTransaction->isParent() && !is2xx)
{
//
// If this is a branch and it is an error reponse,
// then cancel both parent timers as well if there
// is only one branch
//
cancelTimerE();
cancelTimerF();
if (pParent && pParent->getBranchCount() == 1)
{
pParent->fsm()->cancelTimerE();
pParent->fsm()->cancelTimerF();
pParent->setState(COMPLETED);
}
}
pTransaction->setState(COMPLETED);
pTransaction->informTU(pMsg, pTransport);
if (!pTransport->isReliableTransport())
{
//
// Start the longest time we want to handle retransmissions of 200 OK
//
startTimerK();
}
else
{
pTransaction->setState(SIPTransaction::TRN_STATE_TERMINATED);
if (is2xx || pTransaction->allBranchesCompleted())
{
if (pParent)
pParent->setState(SIPTransaction::TRN_STATE_TERMINATED);
}
}
}
break;
case PROCEEDING:
if (pMsg->is1xx())
{
pTransaction->informTU(pMsg, pTransport);
}
else
{
if (pTransaction->isParent() && !is2xx)
{
//
// If we are the parent or this is and error response
// cancel e and f timers
//
cancelTimerE();
cancelTimerF();
}
else if (!pTransaction->isParent() && is2xx)
{
//
// If this is a branch and it is a 2xx reponse,
// then cancel both parent timers as sell
//
cancelTimerE();
cancelTimerF();
if (pParent)
{
pParent->fsm()->cancelTimerE();
pParent->fsm()->cancelTimerF();
pParent->setState(COMPLETED);
}
}
else if (!pTransaction->isParent() && !is2xx)
{
//
// If this is a branch and it is an error reponse,
// then cancel both parent timers as well if there
// is only one branch
//
cancelTimerE();
cancelTimerF();
if (pParent)
{
if (pParent->getBranchCount() == 1)
{
pParent->fsm()->cancelTimerE();
pParent->fsm()->cancelTimerF();
pParent->setState(COMPLETED);
}
}
}
pTransaction->setState(COMPLETED);
pTransaction->informTU(pMsg, pTransport);
if (!pTransport->isReliableTransport())
{
//
// Start the longest time we want to handle retransmissions of 200 OK
//
startTimerK();
}
else
{
pTransaction->setState(SIPTransaction::TRN_STATE_TERMINATED);
if (is2xx || pTransaction->allBranchesCompleted())
if (pParent)
pParent->setState(SIPTransaction::TRN_STATE_TERMINATED);
}
}
break;
case COMPLETED:
break;
}
if (pTransaction->getState() == SIPTransaction::TRN_STATE_TERMINATED)
pTransaction->terminate();
if (pParent && pParent->getState() == SIPTransaction::TRN_STATE_TERMINATED)
pParent->terminate();
}