[asterisk-bugs] [JIRA] (ASTERISK-25817) SIP keep alive messages contain trailing null byte

[hypherion (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-25817?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

hypherion updated ASTERISK-25817:
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    Attachment: keepalive_packet.png

See attached screenshot from Wireshark.

> SIP keep alive messages contain trailing null byte
> --------------------------------------------------
>
>                 Key: ASTERISK-25817
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25817
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Resources/res_pjsip_keepalive
>    Affects Versions: 13.7.2
>         Environment: Fedora 20
>            Reporter: hypherion
>            Severity: Minor
>         Attachments: keepalive_packet.png
>
>
> When configured with the 'keepalive' option (keepalive = 30 in sip.conf), Asterisk sends periodic keep alive packets to peers. These packets as sent with content '\r\n\0' instead of 'r\n\r\n' as indicated by RFC5626 section 4.4.1.
> This has the potential to confuse clients and not be interpreted as 'ping' packets.



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