[sr-dev] Using GRUU and outbound

Peter Dunkley peter.dunkley at crocodile-rcs.com
Tue Apr 30 21:22:19 CEST 2013


The client can take several minutes to notice (it seems to take between 3
minutes and 7 minutes depending on the OS) that a TCP connection has died.

This leaves a substantial window that requests to the client are
undeliverable.

Re-routing in-dialog requests when the flow fails solves this problem.

Regards,

Peter


> Peter Dunkley writes:
>
>> By enabling the route-set to change you can failover to another flow
>> within dialog.  This gives you protection against sessions terminating
>> because the connection between the client and one of the edge proxies
>> dies.
>
>> If you cannot change the route-set and one of your connections to the
>> edge proxy fails you will never be able to route another request on that
>> dialog.
>
> yes you can if the edge proxy is still alive and client establishes a
> new connection to it (as it according to outbound rfc should do).
>
> -- juha
>
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-- 
Peter Dunkley
Technical Director
Crocodile RCS Ltd




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