[OpenSIPS-Users] Registration process

[Jeff Pyle]

Toyima,

The client can request an expiration time.  It's the proxy that ultimately determines how long the registration is valid, and that is the value that gets communicated back to the client in the 200 OK from the proxy.

How does the proxy decide?  Take a look at this link and the two entries following it:
  http://www.opensips.org/html/docs/modules/1.6.x/registrar.html#id249121



- Jeff


From: Toyima Dias <toyimads at gmail.com<mailto:toyimads at gmail.com>>
Reply-To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Date: Tue, 1 Feb 2011 04:58:32 -0500
To: OpenSIPS users mailling list <users at lists.opensips.org<mailto:users at lists.opensips.org>>
Subject: [OpenSIPS-Users] Registration process

Hello,
I'm a little confuse about the process of registration, who does set the expiration time on a REGISTER request? is it done by the Proxy? or may be the client? i've read on the RFC 3261 the following:

"Version 1.0 StartHTML:0000000105 EndHTML:0000000682 StartFragment:0000000424 EndFragment:0000000646

If neither mechanism for expressing a suggested expiration time is
present in a REGISTER, the client is indicating its desire for the
server to choose.!

That means that the UA can send or not the expires in the contact? what about if the expiration date finish?what should be done? the REGISTER server sends some message to refresh the binding?

Thanks in advance!!!
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