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No STUN server option after restart

Abierto
#1,767 1 comentario 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
4/5
Tiempo estimado
3-5 días
Aptitud para principiantes
25/100
Tipo de issue
Error
Claridad
Bastante claro
Estado de actividad
Estancado
Stack tecnológico
perl, redis
Área
databases

Línea de trabajo

Reproduce by running rtpengine with the redis option, placing an ICE call, restarting the daemon, and diffing /proc/rtpengine/0/list before and after: the STUN flag is present before the restart and gone after, because the option is never written to the Redis store. Start in the code path that serialises per-stream call options into Redis and the counterpart that restores them at startup, since the STUN handling itself is fine — the flag is simply not persisted. Done when the post-restart list still shows STUN and the binding requests keep getting answered; expect to read around the session/stream state code first, as the issue names no files.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

Hello!
We faced the issue related to session recovery.
The issue is that after restart there is no STUN option, as STUN option is not stored to Redis DB.
For calls without ICE-candidates there is no issue with the sound, as there is no STUN.
Tested at RTPEngine versions:
Version: 11.5.1.14+0~mr11.5.1.14 git-mr11.5.1-f880739a,
Version: 10.1.1.1
Reproduce steps:

  1. RTPEngine with Redis option:
    redis = 127.0.0.1:1888/3
  2. Make a call with ICE-candidates (in our tests we called from UDP softphone to WSS device)
  3. Verify that there is a sound between devices.
  4. Verify that RTPEngine wrote to Redis DB
  5. Restart RTPEngine
  6. Sound will disappear in about 6 seconds.

What we have find out:
Before reboot (from /proc/rtpengine/0/list):
options: RTP PT-filter RTCP RTCP-mux DTLS STUN SSRC-tracking forward-RTCP forward-RTCP-FB
After reboot:
options: RTP PT-filter RTCP RTCP-mux DTLS SSRC-tracking forward-RTCP forward-RTCP-FB
As you see, STUN disappeared from options. We checked the info that is stored in Redis, and didn’t find any information about STUN.
And, after RTPEngine restart, we see “binding requests”, but RTPEngine knows nothing about them (please see attached screenshots):
15:53:29 - answer from RTPEngine
15:53:31 - no answer from RTPEngine
15:53:41.961601000 - RTPEngine stopped sending RTP to UDP device.

STUN:
image (11)

In text:
No. \ Time \ Source \ Destination \ Protocol \ Len. \ Info
37101 \ 15:53:27 \ User \ RTPEngine \ STUN \ 142 \ Binding Request user: xHfrcEp4:cnH5
36910 \ 15:53:27 \ RTPEngine \ User \ STUN \ 198 \ Binding Success Response XOR-MAPPED-ADDRESS: RTPEngine:54473
37101 \ 15:53:29 \ User \ RTPEngine \ STUN \ 142 \ Binding Request user: xHfrcEp4:cnH5
36910 \ 15:53:29 \ RTPEngine \ User \ STUN \ 198 \ Binding Success Response XOR-MAPPED-ADDRESS: RTPEngine:54473
37101 \ 15:53:31 \ User \ RTPEngine \ STUN \ 142 \ Binding Request user: xHfrcEp4:cnH5
37101 \ 15:53:32 \ User \ RTPEngine \ STUN \ 142 \ Binding Request user: xHfrcEp4:cnH5
37101 \ 15:53:32 \ User \ RTPEngine \ STUN \ 142 \ Binding Request user: xHfrcEp4:cnH5
RTP:
image (10)

Lenguaje dominante
Perl
Estrellas
992
Forks
459
Métricas de merge de PR
Sin PR fusionados en 30 d

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