Hi Vikas, 2011/3/18 Vikas Bhat <vikasbhat0...@gmail.com>: > i am implenting early dialog in Sofia sip application using prack. > the application is stateless using NTA modul. > > my application send invite with Supported header,receives 183 with RSeq. > then the applcation tries to send the PRACK message as shown below but it > fails > > orq=nta_outgoing_prack(leg, //leg created before sending the invite > (nta_outgoing_t *)dialogue->orq, // this is orq of INVITE message send > earlier using nta_outgoing_tcreate > (nta_response_f *)sofia_sip_response, //call back function for > receiving response > (nta_outgoing_magic_t*)dialogue, //dialogue pointer that > is created after sending initial INVITE > NULL, > NULL, > NTATAG_STATELESS(1), > SIPTAG_RACK(pRackHdr), //added rack header > TAG_END()); > > Kindly guide me to implement Prack .
If you want to use nta_outgoing_prack(), you first have to create a new instance of INVITE client transaction specific to the new early dialog you want to PRACK with nta_outgoing_tagged(). When you receive an early response with Require: 100rel, you create the new invite transaction with nta_outgoing_tagged(), and keep both it and the original invite transaction around. Depending on your application, you might run to a situation where the final 200 OK is received from some other UA (or you might receive 100rel responses from other UAs, too). There is a disturbing @bug in nta_outgoing_tagged(), however, I believe the leak is fixed, but the PRACK and early dialog code is not very well tested. Please report if you run to any assert() failure. -- Pekka.Pessi mail at nokia.com ------------------------------------------------------------------------------ Enable your software for Intel(R) Active Management Technology to meet the growing manageability and security demands of your customers. Businesses are taking advantage of Intel(R) vPro (TM) technology - will your software be a part of the solution? Download the Intel(R) Manageability Checker today! http://p.sf.net/sfu/intel-dev2devmar _______________________________________________ Sofia-sip-devel mailing list Sofia-sip-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sofia-sip-devel
