[Serusers] Changing 'expires' value in response to REGISTER

Andres andres at telesip.net
Thu Aug 4 04:31:45 CEST 2005

Kanakatti Mahesh Subramanya wrote:

> And the beat goes on...
> I 've got a bunch of Snom's that have a minimum register interval of 1 
> minute.
> I *know* that I can get them to register every 30 seconds if I set the 
> 'expires' value in the Contact header of the '200 OK' response to the 
> REGISTER request appropriately (whew)
> e.g., instead of returning
> Contact: <sip:jake.foobaz at>;expires=60
> I return
> Contact: <sip:jake.foobaz at>;expires=30
> The question is - how do I change the 'expires' value?

How about using a global parameter like:

1.3.3. max_expires (integer)

   The maximum expires value of a Contact, values higher than
   this maximum will be automatically set to the maximum. Value 0
   disables the checking.

   Default value is 0.

   Example 1-3. Set max_expires parameter
modparam("registrar", "max_expires", 120)

> append_to_reply() isn't relevant - i don't want another header
> subst() on the request's 'Expires' header isn't useful since 
> build_contact() seems to extract it's values from the original 
> request.  Any changes I made to it seem to be ignored
> Any ideas?
> cheers
>Serusers mailing list
>serusers at lists.iptel.org

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