[asterisk-bugs] [JIRA] (ASTERISK-29638) res_pjsip_session: No video after early media

Asterisk Team (JIRA) noreply at issues.asterisk.org
Fri Sep 10 04:07:33 CDT 2021


    [ https://issues.asterisk.org/jira/browse/ASTERISK-29638?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=256218#comment-256218 ] 

Asterisk Team commented on ASTERISK-29638:
------------------------------------------

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> res_pjsip_session: No video after early media
> ---------------------------------------------
>
>                 Key: ASTERISK-29638
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29638
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_session
>    Affects Versions: 16.10.0, 18.6.0
>         Environment: Alpine Linux (in Docker), various versions.
> All Asterisk versions >16.9
>            Reporter: Michael Auracher
>            Severity: Major
>
> This issue is 100% reproducable on all Asterisk versions > 16.9.0
> Setup: Asterisk with default config, only devices are configured.
> Codecs: h264 + any audio codec
> Reproduce:
> (Tested with Yealink-T58V, Yealink-VP530, Grandstream-GXV3275  (all early media enabled) to a  Grandstream-GXV3275 (or any other device supporting early media)
> 1. Call from a video phone 
> 2. Preview video is displayed on GXV3275 (OK)
> 3. Answer call on GXV3275 
> Actual result: No Video is shown on on caller display
> Expected result: Video is shown on on caller display
> Happens after the changes introduced in https://issues.asterisk.org/jira/browse/ASTERISK-28783 in
> https://gerrit.asterisk.org/c/asterisk/+/13954/2/res/res_pjsip_session.c
> Workaround: patched file by reverting the changes from ASTERISK-28783
> Details:
> 11:28:47.1228 :  [11153]: res_pjsip_session.c:4230 session_on_tsx_state:  Topology: Pending: (null topology)  Active:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:sendrecv (h264)>
> Than we get: "Pending media state exists"
> res_pjsip_session.c:2302 sip_session_refresh:  PJSIP/132-00000000: DP:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:recvonly (h264)> → this will be used
> res_pjsip_session.c:2303 sip_session_refresh:  PJSIP/132-00000000: DA:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:sendrecv (h264)>
> res_pjsip_session.c:2304 sip_session_refresh:  PJSIP/132-00000000: CP: (null topology)
> res_pjsip_session.c:2305 sip_session_refresh:  PJSIP/132-00000000: CA:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:sendrecv (h264)>
> The first channel in the bridge is PJSIP/200-00000001 (the caller) which has :
>     Topology: Pending: (null topology)  Active:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:sendonly (h264)>
> Which is the “Early media” state in this test case
> This  is the resulting topology although the SIP 200 OK + SDP video:sendrecv is set by the Grandstream:
> 11:28:47.1237 :  [11153]: res_pjsip_session.c:2194 sip_session_refresh:  PJSIP/132-00000000: New SDP? yes  Queued? yes DP:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:recvonly (h264)>  DA:  <0:audio-0:audio:sendrecv (g722|alaw|ulaw)> <1:video-1:video:sendrecv (h264)>
> 11:28:47.1237 :  [11153]: res_pjsip_session.c:2266 sip_session_refresh:  PJSIP/132-00000000: Pending media state exists
> 11:28:47.1238 :  [11153]: res_pjsip_session.c:2300 sip_session_refresh:  PJSIP/132-00000000: Active media state exists and is not equal to pending
> 11:28:47.1243 :  [11153]: res_pjsip_session.c:1945 resolve_refresh_media_states:  PJSIP/132-00000000: Changed NP stream state from sendrecv to recvonly
> Then an INVITE is sent to the Grandstream and the video is turned off.



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