void AmB2BSession::onB2BEvent(B2BEvent* ev)
{
switch(ev->event_id){
case B2BSipRequest:
{
B2BSipRequestEvent* req_ev = dynamic_cast<B2BSipRequestEvent*>(ev);
assert(req_ev);
if(req_ev->forward){
relaySip(req_ev->req);
}
else if( (req_ev->req.method == "BYE") ||
(req_ev->req.method == "CANCEL") ) {
onOtherBye(req_ev->req);
}
}
return;
case B2BSipReply:
{
B2BSipReplyEvent* reply_ev = dynamic_cast<B2BSipReplyEvent*>(ev);
assert(reply_ev);
DBG("B2BSipReply: %i %s (fwd=%i)\n",reply_ev->reply.code,
reply_ev->reply.reason.c_str(),reply_ev->forward);
DBG("B2BSipReply: content-type = %s\n",reply_ev->reply.content_type.c_str());
if(reply_ev->forward){
std::map<int,AmSipRequest>::iterator t_req = recvd_req.find(reply_ev->reply.cseq);
if (t_req != recvd_req.end()) {
relaySip(t_req->second,reply_ev->reply);
if(reply_ev->reply.code >= 200){
if( (t_req->second.method == "INVITE") &&
(reply_ev->reply.code == 487)){
terminateLeg();
}
recvd_req.erase(t_req);
}
} else {
ERROR("Request with CSeq %u not found in recvd_req.\n",
reply_ev->reply.cseq);
}
}
}
return;
case B2BTerminateLeg:
terminateLeg();
break;
}
//ERROR("unknown event caught\n");
}
void AmB2BSession::onB2BEvent(B2BEvent* ev)
{
DBG("AmB2BSession::onB2BEvent\n");
switch(ev->event_id){
case B2BSipRequest:
{
B2BSipRequestEvent* req_ev = dynamic_cast<B2BSipRequestEvent*>(ev);
assert(req_ev);
DBG("B2BSipRequest: %s (fwd=%s)\n",
req_ev->req.method.c_str(),
req_ev->forward?"true":"false");
if(req_ev->forward){
// Check Max-Forwards first
if(req_ev->req.max_forwards == 0) {
relayError(req_ev->req.method,req_ev->req.cseq,
true,483,SIP_REPLY_TOO_MANY_HOPS);
return;
}
if (req_ev->req.method == SIP_METH_INVITE &&
dlg->getUACInvTransPending()) {
// don't relay INVITE if INV trans pending
DBG("not sip-relaying INVITE with pending INV transaction, "
"b2b-relaying 491 pending\n");
relayError(req_ev->req.method, req_ev->req.cseq,
true, 491, SIP_REPLY_PENDING);
return;
}
if (req_ev->req.method == SIP_METH_BYE &&
dlg->getStatus() != AmBasicSipDialog::Connected) {
DBG("not sip-relaying BYE in not connected dlg, b2b-relaying 200 OK\n");
relayError(req_ev->req.method, req_ev->req.cseq,
true, 200, "OK");
return;
}
}
if( (req_ev->req.method == SIP_METH_BYE)
// CANCEL is handled differently: other side has already
// sent a terminate event.
//|| (req_ev->req.method == SIP_METH_CANCEL)
) {
if (onOtherBye(req_ev->req))
req_ev->processed = true; // app should have relayed 200 to BYE
}
if(req_ev->forward && !req_ev->processed){
int res = relaySip(req_ev->req);
if(res < 0) {
// reply relayed request internally
relayError(req_ev->req.method, req_ev->req.cseq, true, res);
return;
}
}
}
return;
case B2BSipReply:
{
B2BSipReplyEvent* reply_ev = dynamic_cast<B2BSipReplyEvent*>(ev);
assert(reply_ev);
DBG("B2BSipReply: %i %s (fwd=%s)\n",reply_ev->reply.code,
reply_ev->reply.reason.c_str(),reply_ev->forward?"true":"false");
DBG("B2BSipReply: content-type = %s\n",
reply_ev->reply.body.getCTStr().c_str());
if(reply_ev->forward){
std::map<int,AmSipRequest>::iterator t_req =
recvd_req.find(reply_ev->reply.cseq);
if (t_req != recvd_req.end()) {
if ((reply_ev->reply.code >= 300) && (reply_ev->reply.code <= 305) &&
!reply_ev->reply.contact.empty()) {
// relay with Contact in 300 - 305 redirect messages
AmSipReply n_reply(reply_ev->reply);
n_reply.hdrs+=SIP_HDR_COLSP(SIP_HDR_CONTACT) +
reply_ev->reply.contact+ CRLF;
if(relaySip(t_req->second,n_reply) < 0) {
terminateOtherLeg();
terminateLeg();
}
} else {
// relay response
if(relaySip(t_req->second,reply_ev->reply) < 0) {
terminateOtherLeg();
terminateLeg();
}
}
} else {
DBG("Cannot relay reply: request already replied"
" (code=%u;cseq=%u;call-id=%s)",
reply_ev->reply.code, reply_ev->reply.cseq,
reply_ev->reply.callid.c_str());
}
} else {
// check whether not-forwarded (locally initiated)
// INV/UPD transaction changed session in other leg
if (SIP_IS_200_CLASS(reply_ev->reply.code) &&
(!reply_ev->reply.body.empty()) &&
(reply_ev->reply.cseq_method == SIP_METH_INVITE ||
reply_ev->reply.cseq_method == SIP_METH_UPDATE)) {
if (updateSessionDescription(reply_ev->reply.body)) {
if (reply_ev->reply.cseq != est_invite_cseq) {
if (dlg->getUACInvTransPending()) {
DBG("changed session, but UAC INVITE trans pending\n");
// todo(?): save until trans is finished?
return;
}
DBG("session description changed - refreshing\n");
sendEstablishedReInvite();
} else {
DBG("reply to establishing INVITE request - not refreshing\n");
}
}
}
}
}
return;
case B2BTerminateLeg:
DBG("terminateLeg()\n");
terminateLeg();
break;
}
//ERROR("unknown event caught\n");
}
