[asterisk-bugs] [JIRA] (ASTERISK-24852) [patch] new res_pjsip module to identify endpoint for an incoming call with a trunk that has outbound registration.

[Dmitriy Serov (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitriy Serov updated ASTERISK-24852:
-------------------------------------

    Reviewboard Link: https://reviewboard.asterisk.org/r/4476/

> [patch] new res_pjsip module to identify endpoint for an incoming call with a trunk that has outbound registration.
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-24852
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24852
>             Project: Asterisk
>          Issue Type: New Feature
>      Security Level: None
>          Components: Resources/res_pjsip
>            Reporter: Dmitriy Serov
>         Attachments: res_pjsip_endpoint_identifier_request_user.diff
>
>
> The main task: to find the right endpoint for an incoming call with a trunk that has outbound registration.
> Simple example (a piece of pjsip.conf):
> [trunk1]
> type=registration
> transport=udp-transport
> outbound_auth=trunk1
> server_uri=sip:sip.example.com
> client_uri=sip:user1 at sip.example.com
> contact_user=trunk1-in
> [trunk2]
> type=registration
> transport=udp-transport
> outbound_auth=trunk2
> server_uri=sip:sip.example.com
> client_uri=sip:user2 at sip.example.com
> contact_user=trunk2-in
> [trunk1-in]
> type=endpoint
> context=from-trunk
> disallow=all
> allow=ulaw
> outbound_auth=trunk1
> aors=trunk1
> [trunk2-in]
> type=endpoint
> context=from-trunk
> disallow=all
> allow=ulaw
> outbound_auth=trunk2
> aors=trunk2
> trunk1, trunk2 - outbound registrations to EXTERNAL sip server sip.example.com. One server and two registrations.
> ; "contact_user=" sets the SIP contact header's user portion of the SIP URI this will affect the extension reached in dialplan when the far end calls you at this registration.
> In example option has values "trunk1-in" and "trink2-in".
> Case: random user admin at sip.example.com calling to user2 at sip.example.com.
> External sip server redirect call to my server with packet:
> INVITE sip:trunk2-in at 8.8.8.8:5060 SIP/2.0
> From: "PhonerLite" <sip:admin at sip.example.com>;tag=5F39A540-782390-DE41886A_kmbdctn-8A47
> To: <sip:user2 at sip.example.com>
> This invite can be:
> - anonymous. Very bad.
> - identified by IP. Config has two endpoints with same IP.
> - identified by username From. It cannot identify by "admin" (random)
> res_pjsip_endpoint_identifier_request_user helps to identify this invite by uri username in request line (contact_user in registration).



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