Hi, Now that SDP negociation and sending an INVITE method is working for my app, I have an issue with the ACK request. Indeed when I try to make a call between two user agents both built with my app, INVITE is sent correctly, OK is received but ACK does not reach the callee. So the callee sends OK indefinitely. I have captured the packets with Wireshark and the main difference between an ACK packet sent by my app and an ACK sent by simpleua (which works) is : simpleua : Request-Line: ACK sip:bob at 137.122.88.181:5060;transport=UDP SIP/2.0 my app : Request-Line: ACK sip:bob at open-ims.test SIP/2.0 I don't know why it's different since I reused simpleua code for invite dialog (the main difference is that I register on an IMS network with my app). Even more surprising, when I make a call from my app to pjsua, I get a message 488 (Not Acceptable Here, this is normal since I don't have the same codecs) from pjsua and my app answers with an ACK that reaches its destination ! This time the ACK has also this line : Request-Line: ACK sip:bob at open-ims.test SIP/2.0 But it does not have these : Route: <sip:mt at scscf.open-ims.test:6060;lr> Route: <sip:mt at pcscf.open-ims.test:4060;lr> I attach the captures from wireshark and the code of my app (sorry for this ugly mess !). Cheers, Damien -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080716/331c11e9/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: myapp.c Type: text/x-csrc Size: 22743 bytes Desc: not available Url : http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080716/331c11e9/attachment-0001.bin -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: capture_myapp.txt Url: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080716/331c11e9/attachment-0003.txt -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: capture_myapp_ack_ok_after_488.txt Url: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080716/331c11e9/attachment-0004.txt -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: capture_simpleua.txt Url: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080716/331c11e9/attachment-0005.txt
