void SIPIctPool::onAttachFSM(const SIPTransaction::Ptr& pTransaction)
{
if (!pTransaction->fsm())
{
pTransaction->type() = SIPTransaction::TYPE_ICT;
pTransaction->fsm() = SIPIct::Ptr(new SIPIct(_ioService, _timerProps));
pTransaction->fsm()->setOwner(new SIPTransaction::WeakPtr(pTransaction));
pTransaction->fsm()->dispatch() = dispatch();
}
}
SIPTransaction::Ptr SIPTransaction::findBranch(const SIPMessage::Ptr& pRequest)
{
//
// Only a parent transaction can have branches
//
if(!isParent())
return SIPTransaction::Ptr();
OSS::mutex_critic_sec_lock lock(_branchesMutex);
SIPTransaction::Ptr foundBranch;
std::string branch = pRequest->getToTag();
if (branch.empty())
return SIPTransaction::Ptr();
Branches::iterator pBranch = _branches.find(branch);
//
// Branch is non-existent. Create a new one and attach a new FSM to it
//
if (pBranch == _branches.end())
{
foundBranch = SIPTransaction::Ptr(new SIPTransaction(shared_from_this()));
_owner->onAttachFSM(foundBranch);
foundBranch->fsm()->setRequest(fsm()->getRequest());
foundBranch->_owner = _owner;
foundBranch->_responseTU = _responseTU;
_branches[branch] = foundBranch;
}
else
{
foundBranch = pBranch->second;
}
return foundBranch;
}
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();
}