[sr-dev] [tracker] Task opened: dlg_end_dlg on a two-armed proxy only sends bye to one party

[sip-router]

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A new Flyspray task has been opened.  Details are below. 

User who did this - Per Carlen (peca) 

Attached to Project - sip-router
Summary - dlg_end_dlg on a two-armed proxy only sends bye to one party
Task Type - Bug Report
Category - dialog
Status - Unconfirmed
Assigned To - 
Operating System - Linux
Severity - Medium
Priority - Normal
Reported Version - 4.1
Due in Version - Undecided
Due Date - Undecided
Details - The Proxy is configured with two NICs, one interface is connected to an internal SIP-server and the other to an external SIP-server.
A session is established successfully and RTP flows via an RTP-Proxy. So far everything is fine.

When issuing a "dlg_end_dlg"-command in the Proxy, this results in only one BYE being sent on the internal interface towards the SIP-server. No BYE on the external interface. This was verified with tcpdump on all NICs.

If, however, another SIP-Proxy with only one NIC is inserted in the chain between the internal SIP-server and the original SIP-Proxy, and the "dlg_end_dlg" is issued in this new Proxy, then a BYE is sent to both parties. Which to me appear to be the correct behaviour.

So, there seems to be an issue with "dlg_end_dlg" when the involved caller and callee are on different interfaces.

 

More information can be found at the following URL:
http://sip-router.org/tracker/index.php?do=details&task_id=382

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