[reSIProcate] add header

["Kevin Wang" <xinju.subscription@xxxxxxxxx>]

I'm trying to add a Call-Info header to my OPTIONS request. 

        resip::SipMessage& msg = _uacDum->makeOutOfDialogRequest(uasAor, _uacAor, resip::OPTIONS);

        resip::GenericURI gURI;
        resip::Data dataURI("
http://www.example.com");
        gURI.uri() = dataURI;
        resip::H_CallInfos h_CallInfos;
        msg.header(h_CallInfos).push_front(gURI); // this line is not working

        uacDum->send(msg);


But the Call-Info header value is always "<>" without any value inside. I noticed my URL is not inserted into CallInfos. Could anyone help me on how to add Call-Info header correctly? I'm guessing the parse container is not initialized but not sure how to do it.

Thank you!
Kevin