serusers@jtoga.org wrote:

Hi,

I'm trying to have a caller (eg sender of invite) be able to detect the difference between a user that is 'offline' and one that really doesn't exist. Current cfg methods allow for doing a lookup in the location table, but if the target isn't there - then a 404 is returned.

I think what I would like to do is then check the subscriber table....what is the best way to accomplish this?

There are several options:

1) use the group module, add all subscribers to a group, and use the is_user_in() function in ser.cfg.

2) use the CPL module, and install default and/or customized CPL scripts that handle calls differently for subscribers who are offline vs non-subscribers

3) I wanted to do something similar, without the administrative overhead of creating a group and remembering to put everyone in the group, so I wrote a new function in uri_db: does_to_uri_exist. This is just like does_uri_exist except it does not check authorization data.

It's not in CVS but I can post a patch or commit it to CVS. I needed something like it for pals.internet2.edu, which handles register, subscribe, publish, notify, invite, bye, message, etc, messages for subscribers from different domains, but is supposed to be a transparent proxy for non-subscriber URI's, some of which might belong to the same domains. I guess what we have there is a multi-domain cascading registrar.

Jamey