Method smGenerate

SIP/SIPMessage.cpp:189–240

Generate the string representing this sip message.

// Generate the string representing this sip message.
string SipMessage::smGenerate()
{
	string result;
	result.reserve(1000);
	char buf[200];

	// First line.
	if (msmCode == 0) {
		// It is a request
		string uri = this->msmReqUri;	// This includes the URI params and headers, if any.
		snprintf(buf,200,"%s %s SIP/2.0\r\n", this->msmReqMethod.c_str(), uri.c_str());
	} else {
		// It is a reply.
		snprintf(buf,200,"SIP/2.0 %u %s\r\n", msmCode, msmReason.c_str());
	}
	result.append(buf);

	appendHeader(&result,"To",this->msmTo.value());
	appendHeader(&result,"From",this->msmFrom.value());

	appendHeader(&result,"Via",this->msmVias);

	appendHeader(&result,"Route",this->msmRoutes);

	appendHeader(&result,"Call-ID",this->msmCallId);

	snprintf(buf,200,"%d %s",msmCSeqNum,msmCSeqMethod.c_str());
	appendHeader(&result,"CSeq",buf);

	if (! msmContactValue.empty()) { appendHeader(&result,"Contact",msmContactValue); }
	if (! msmAuthorizationValue.empty()) { appendHeader(&result,"Authorization",msmAuthorizationValue); }
	// The WWW-Authenticate header occurs only in inbound replies from the Registrar, so we ignore it here.

	// These are other headers we dont otherwise process.
	for (SipParamList::iterator it = msmHeaders.begin(); it != msmHeaders.end(); it++) {
		appendHeader(&result,it->mName.c_str(),it->mValue);
	}

	static const char* userAgent1 = "OpenBTS " VERSION " Build Date " __DATE__;
	const char *userAgent = userAgent1;
	appendHeader(&result,"User-Agent",userAgent);

	appendHeader(&result,"Max-Forwards",gConfig.getNum("SIP.MaxForwards"));

	// Create the body, if any.
	appendHeader(&result,"Content-Type",msmContentType);
	appendHeader(&result,"Content-Length",msmBody.size());
	result.append("\r\n");
	result.append(msmBody);
	msmContent = result;
	return msmContent;
}

// Copy the top via from other into this.
void SipMessage::smCopyTopVia(SipMessage *other)