Method newSipDialogMT

SIP/SIPDialog.cpp:71–97

(pat) This is the post-l3-rewrite way, most initialization during construction.

// (pat) This is the post-l3-rewrite way, most initialization during construction.
SipDialog *SipDialog::newSipDialogMT(DialogType dtype, SipMessage *req)
{
	LOG(DEBUG);
	assert(dtype == SIPDTMTC || dtype == SIPDTMTSMS);
	string proxy = req->smGetProxy();	// Get it from the top via.
	if (proxy.empty()) {
		LOG(ERR) << "Missing proxy (from top via) in MT SIP message:"<<req;
		// Guess at a proxy and try to keep going.
		proxy = gConfig.getStr(dtype == SIPDTMTSMS ? "SIP.Proxy.SMS" : "SIP.Proxy.Speech");
	}
	SipDialog *dialog = new SipDialog(dtype,proxy,"INVITE or MESSAGE via");
	/* TEMPORARY WORKAROUND : smqueue needs to handle this "To:" header properly, disabled for now to ship 4.0.	
	// 2-2014: RFC 3267 8.2.6.2 says the UAS (sip server) MUST add a "to" tag to a response, and MAY add a "to" tag to a provisional (100) response.
	// The reason is in case the request is forked, the client could distinguish responses from multiple servers, a case that would not happen for us.
	dialog->dsSetLocalHeaderMT(&req->msmTo,true);	//dtype == SIPDTMTC);
	*/
	dialog->dsSetLocalHeaderMT(&req->msmTo,dtype == SIPDTMTC);		
	dialog->dsSetRemoteHeader(&req->msmFrom);
	//dialog->mSipUsername = req->smUriUsername();	// IMSI/TMSI is in both the URI and the To: header.
	// TODO: Validate username - must be valid IMSI or TMSI.
	ScopedLock lock(dialog->mDialogLock,__FILE__,__LINE__);	// probably unnecessary.
	dialog->dsSetCallId(req->msmCallId);
	dialog->mSdpOffer = req->msmBody;	// Only useful for MTC, a no-op for MTSMS.
	dialog->saveInviteOrMessage(req,false);
	gSipInterface.dmAddCallDialog(dialog);
	return dialog;
}

// There is just one SipDialog that handles all REGISTER requests.
SipDialog *SipDialog::newSipDialogRegister1() 		// caller imsi