[asterisk-bugs] [JIRA] (ASTERISK-28908) pjsip_message_filter: 400 'Missing Contact header' reply to wrong port

[Alexei Gradinari (JIRA)]

Alexei Gradinari created ASTERISK-28908:
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             Summary: pjsip_message_filter: 400 'Missing Contact header' reply to wrong port
                 Key: ASTERISK-28908
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28908
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_pjsip
    Affects Versions: 16.10.0
            Reporter: Alexei Gradinari


The endpoint is behind the NAT (rewrite_contact=yes, force_rport=yes).
The endpoint sends keep alive using NOTIFY messages.
The NOTIFY message missing Contact header.
The asterisk replies on this message to the port using 'Via' header.
This port is behind the NAT so it's not reachable.
The asterisk has to use source IP address and port.




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