[sr-dev] send CANCEL to timed out branch?

[Jasmin Schnatterbeck]

Hi,

I am thinking about whether it makes sense to send a CANCEL Request to a 
branch, that did not reply within the fr_timer when using DNS-Failover.

It is possible, that the first gateway (because of various reasons) 
takes too long to reply, but nevertheless processes the call.
This can lead to the result, that the callee receives 2 calls (from both 
gateways), which is in fact one call from the caller.

It should be possible to prevent that in most cases, if DNS failover 
sends a CANCEL to a timed out branch and then forgets about it (stateless).

Are there any comments or feedback/experiences on that idea?

Cheers
Jasmin

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 5407 bytes
Desc: S/MIME Kryptografische Unterschrift
URL: <http://lists.sip-router.org/pipermail/sr-dev/attachments/20130614/b26d2937/attachment.bin>