[asterisk-bugs] [JIRA] (ASTERISK-28871) res_pjsip_session: Unnecessary re-Invite on call answer

[Alexei Gradinari (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28871?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=250629#comment-250629 ] 

Alexei Gradinari commented on ASTERISK-28871:
---------------------------------------------

Asterisk version 16.10, if only one codec is allowed then there is not re-Invite.

I think it's related to 
https://gerrit.asterisk.org/c/testsuite/+/14359
pjsip/resolver: Limit codec usage to ulaw.

Something was changed in version 16.10 and it broke these tests.


> res_pjsip_session: Unnecessary re-Invite on call answer
> -------------------------------------------------------
>
>                 Key: ASTERISK-28871
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28871
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_session
>    Affects Versions: 16.10.0
>            Reporter: Alexei Gradinari
>            Assignee: Alexei Gradinari
>            Severity: Minor
>         Attachments: ast16-10-sip-flow.png, ast16-9-sip-flow.png
>
>
> Asterisk version 16.10
> Asterisk sends INVITE to PJSIP endpoint with the list of 3 codecs.
> Endpoint answers with one codec.
> Asterisk immediately sends re-Invite to endpoint with the list of 3 codecs.
> Endpoint replies 200 OK
> RTP traffic.
> Asterisk version 16.9
> Asterisk sends INVITE to PJSIP endpoint with the list of 3 codecs.
> Endpoint answers with one codec.
> RTP traffic.
> The re-Invite is unwanted in this case.



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