[Reposting: Had previously posted in wrong thread.] Hi All, I have a query regarding MESSAGE implementation in PJSIP. RFC-3428 <http://tools.ietf.org/html/rfc3428#section-4> mentions that: "*MESSAGE requests do not initiate dialogs. User Agents MUST NOT **insert Contact header fields into MESSAGE requests.".* But the *pjsua_im_send* method generates a SIP MESSAGE message that includes a Contact header, (shown underlined in the message log below). Is this a known issue in PJSIP 1.14.2. Thanks and regards, Anil. ___________________________ *MESSAGE sip:anil1@**x.x.x.x** SIP/2.0* *Via: SIP/2.0/UDP **x.x.x.x** :5060;rport;branch=z9hG4bKPjWBb5i2TOulKTMPruedu4iTZSoImGZuu4* *Max-Forwards: 70* *From: <sip:anil2@**x.x.x.x**>;tag=xbdSc9Nns8u0j1N6Q2C8dHfrrPJofXFF* *To: <sip:anil1@**x.x.x.x**>* *Call-ID: j4onStVg3vzr67ycwKDVuGzGQKgOyD6x* *CSeq: 48532 MESSAGE* *Accept: text/plain, application/im-iscomposing+xml* *Contact: <sip:anil2 at x.x.x.x:5060;ob>* *User-Agent: PJSUA v1.14.2 Darwin-12.2/x86_64* *Content-Type: text/plain* *Content-Length: 2* ** *Hi* -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130304/ec7a12f2/attachment-0001.html>