[asterisk-bugs] [JIRA] (ASTERISK-26955) SIP Packets with Via "received=" Containing IPv6 Address Delimited by "[]" Rejected

[Rusty Newton (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-26955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rusty Newton updated ASTERISK-26955:
------------------------------------

    Assignee: Peter Sokolov
      Status: Waiting for Feedback  (was: Triage)

Thanks for the report. Can you attach an Asterisk debug log for extra clarity in terms of Asterisk's response and behavior in this case? 

> SIP Packets with Via "received=" Containing IPv6 Address Delimited by "[]" Rejected
> -----------------------------------------------------------------------------------
>
>                 Key: ASTERISK-26955
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26955
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: pjproject/pjsip
>    Affects Versions: 14.3.0
>            Reporter: Peter Sokolov
>            Assignee: Peter Sokolov
>
> When using PJSIP and a SIP packet containing Via "received" with an IPv6 address delimited by "[" and "]" is received, PJSIP drops such a packet complaining about the "[" and "]". No calls can be established.
> Via: SIP/2.0/UDP [2001:db8::9:1];received=[2001:db8::9:255];branch=z9hG4bKas3-111
> RFC5118 sais that even though this is not a valid request based on a strict interpretation of the grammar in [RFC3261], robust implementations must nonetheless be able to parse the topmost Via header field and continue processing the request. I assume that Asterisk should be treated as a robust implementation.
> Channel SIP has no problems with SIP packets containing Via received= with the IPv6 address in brackets.



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