Hi Magnus, El 04/02/10 12:54, Magnus Burman escribió: > Hmm, you are right, that wasn't the full syslog for that call. > Investigating further I see that I get the following: > > Jan 11 22:28:07 sbc1 /usr/sbin/opensips[27792]: > CRITICAL:dialog:log_next_state_dlg: bogus event 6 in state 2 for dlg > 0x7f5e880692a0 [1305:480665684] with clid > 'a27f94c890000e3e13c410b392b13d753bdb84e00e2147f91b8-0266-6714' and tags > 'e-13c4-10b392b-75e19db4-10b392b' '' > > This is right after the call has been established; the next event in the > sip trace is at 22:53:40, the re-invite. > > According to a year old post by Bogdan > (http://www.mail-archive.com/[email protected]/msg00700.html) > this means that ACK is received before 200 OK. > > Here's the sip trace up to the point of the dialog error: > 22:27:56.376925 Trunk -> Proxy : INVITE > 22:27:56.381153 Proxy -> Trunk : 100 TRYING > 22:27:56.381215 Proxy -> UA___ : INVITE > 22:27:56.437339 UA___ -> Proxy : 100 TRYING > 22:27:56.552454 UA___ -> Proxy : 180 RINGING > 22:27:56.552530 Proxy -> Trunk : 180 RINGING > 22:28:07.179499 UA___ -> Proxy : 200 OK > 22:28:07.182204 Proxy -> Trunk : 200 OK > 22:28:07.197002 Trunk -> Proxy : ACK > 22:28:07.197158 Proxy -> UA___ : ACK > > Could this be the source of the problem? >
Indeed. Whats happening is that the dialog state is 'broken' because OpenSIPS received the ACK before actually processing the 200OK (the 200OK is processed *after* it's sent). If you use engage_media_proxy function, MediaProxy will rely on the dialog state to internally call use_media_proxy function, but when that error happens MediaProxy doesn't act accordingly because the dialog state is broken. So, I see 3 possible solutions: 1- Use the manual functions (use_media_proxy and end_media_session) instead of engage_media_proxy. 2- Backport the dialog module fixes to your OpenSIPS version (revisions 5420 and 5422) 3- Upgrade OpenSIPS to a more recent version which includes the fix already. Regards, -- Saúl Ibarra Corretgé AG Projects _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
