[asterisk-bugs] [JIRA] (ASTERISK-25196) res_pjsip_nat: rewrite_contact should not be applied to Contact header when Record-Route headers are present

[Mark Michelson (JIRA)]

Mark Michelson created ASTERISK-25196:
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             Summary: res_pjsip_nat: rewrite_contact should not be applied to Contact header when Record-Route headers are present
                 Key: ASTERISK-25196
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-25196
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
            Reporter: Mark Michelson


(This issue is mainly a placeholder for https://gerrit.asterisk.org/#/c/711)

The issue was discovered at Digium when performing provider testing. The observed issue was that Asterisk sent an INVITE to sip:foo. The 200 OK that Asterisk received had a Contact header of sip:bar, and Record-Route headers of sip:baz and sip:foo in that order.

The result was that Asterisk rewrote the Contact header from sip:bar to sip:foo. The resulting ACK that Asterisk sent had R-URI of sip:foo, and Route headers sip:foo and sip:baz in that order. The problem is that the ACK never reached sip:bar since that was completely removed from the route set.



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