Benny Prijono wrote: > On Wed, Aug 13, 2008 at 11:27 AM, Pedro Gon?alves > <pedro.pandre at gmail.com <mailto:pedro.pandre at gmail.com>> wrote: > > Hi! > > I already managed to use ICE to establish a call between a client > behind > symmetric NAT and a client directly (no NAT) connected to my SIP > Server, > which proves that ICE is working fine :) > > However, I have a problem when ICE can't establish a connection (ex: > Port Restricted Cone NAT to Symmetric NAT). > I think I am missing something, because the media (RTP and RTCP) > is not > starting in caller when the initial answer (200 OK INVITE) is received > by the caller. > > As I am using PJSIP at a low level, the process flow is like this: > [When starting a call] > > == Caller == > pjmedia_ice_create() > pjmedia_transport_media_create() > pjmedia_transport_encode_sdp() > pjsip_inv_create_uac() > pjsip_inv_invite() > pjsip_inv_send_msg() > > [INVITE goes to answerer] > > == Answerer == > pjsip_inv_answer() > pjmedia_ice_create() > pjmedia_transport_media_create() > pjmedia_transport_encode_sdp() > pjsip_inv_send_msg() > pjmedia_transport_media_start() > > [200 OK goes to caller] > > == Caller == > on_media_update(): > pjmedia_transport_media_start() > > on_ice_complete(): > pjmedia_endpt_create_sdp() > pjmedia_transport_encode_sdp() > pjsip_inv_reinvite() > pjsip_inv_send_msg() > (...) > > With this process flow, I can see that the default candidates (relayed > candidates) are chosen and negotiated; I can even see the media flow > going from answerer to relay sever to caller, but not the other way > around (caller to relay server to answerer). > Any idea why? > > > Nope. > > > Am I missing something? > > > Yes. The log. :) Here they are, in attachment. > > And btw, in your log, all SIP messages are written as one very long > line and this makes it very hard to read. Can you fix that first? > Sorry, I can see the log perfectly with Notepad or PSPad. Here is an example of a sip message: 15:43:33.640 LOG RX 354 bytes Response msg 100/REGISTER/cseq=18510 (rdata0AAD805C) from UDP 172.18.0.170:5060: SIP/2.0 100 Trying Via: SIP/2.0/UDP 10.0.0.2:1470;rport=1470;branch=z9hG4bKPj9663ef010ac74fe5bdb59f8a3731d622;received=172.18.0.78 From: <sip:+351919414978 at webchamada.vodafone.pt>;tag=47530169257643ef812a6940a8fe5174 To: <sip:+351919414978 at webchamada.vodafone.pt> Call-ID: da82eb3395394dfc8bc0b163cd1e01ac CSeq: 18510 REGISTER Content-Length: 0 Best Regards Pedro Gon?alves -------------- next part -------------- A non-text attachment was scrubbed... Name: caller_not_sending_media.zip Type: application/x-zip-compressed Size: 272738 bytes Desc: not available Url : http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080813/a6f8093b/attachment-0001.bin
