[asterisk-bugs] [JIRA] (ASTERISK-29955) chan_sip: SIP route header is missing on UPDATE

[Asterisk Team (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-29955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Asterisk Team updated ASTERISK-29955:
-------------------------------------

    Target Release Version/s: 19.4.0

> chan_sip: SIP route header is missing on UPDATE
> -----------------------------------------------
>
>                 Key: ASTERISK-29955
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-29955
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Channels/chan_sip/General, Channels/chan_sip/Transfers
>    Affects Versions: 16.24.1, 18.10.1
>            Reporter: Mark Petersen
>            Assignee: Mark Petersen
>      Target Release: 16.26.0, 18.12.0, 19.4.0
>
>         Attachments: lunken.pcap
>
>
> if Asterisk need to send an UPDATE before answer on a channel that uses Record-Route: it will not include a Route header
> how to reproduce:
> A call B
> B put A on HOLD
> B call C
> C send 180 Ringing with a Record-Route header
> B refer A to C (while C is still ringing)
> note only newer phone will send the refer with the unanswered channel of C
> bug introduced with ASTERISK-24628
> that is trying to prevent set_destination from being set,
> but inadvertently also prevents add_route from being set



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