[asterisk-bugs] [JIRA] (ASTERISK-28973) Malformed IP address in SDP of 2nd SIP timer triggered INVITE when NAT is active (UDP transport with external_media_address)

[Michael Neuhauser (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-28973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Michael Neuhauser updated ASTERISK-28973:
-----------------------------------------

    Attachment: 0060-clone-sdp-for-sip-timer-refresh-invite.patch

> Malformed IP address in SDP of 2nd SIP timer triggered INVITE when NAT is active (UDP transport with external_media_address)
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-28973
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28973
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: pjproject/pjsip
>    Affects Versions: 16.11.0
>            Reporter: Michael Neuhauser
>              Labels: patch
>         Attachments: 0060-clone-sdp-for-sip-timer-refresh-invite.patch
>
>
> PJSIP, UDP transport with external_media_address and session timers enabled. Connected to SIP server that is not in local net. Asterisk initiated the connection and is refreshing the session after 150s (timeout 300s). The 2nd refresh-INVITE triggered by the pjsip timer has a malformed IP address in its SDP (garbage string). This only happens when the SDP is modified by the nat-code to replace the local IP address with the configured external_media_address.



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