We use sipsak to send an OPTIONS request to the server peridically. I think that nagios plugin is a good idea because AFAIK nagios is very popular. Maybe the test could look like this: 1) Register a contact pointing to iself, 2) Send an OPTIONS(or whatever) request to the AOR registered in the previous step, the plugin should receive it back if the registration was sucessful. 3) Unregister the AOR. This way both, proxy and registrar could be tested. Jan. On 27-11 16:13, Alexander Mayrhofer wrote:

Hi, IMHO sending OPTIONS request is the best way to test if a server is still responding to requests. Server are not required to answer such requests, but as it described in the RFC, i would say it is at least recommended. 0.8.12 contains a module which can answer this requests, and sipsak can send such requests. If you want to test the user location and authentication too, sipsak can do this as well. sipsak supports digest authentication and in the usrloc mode it registers itself and sends either a test MESSAGE or an INVITE to the account registered just before. I guess it should be easy to integrate an external executable like sipsak into a Nagios plugin. But you are free to write plain SIP into a Nagios module ;) If you want to test NAT traversal too, that is currently not posibble with sipsak because it is not symmetric yet. If you have any further questions or really need symmetric support in sipsak quickly feel free to ask me directly. Greets Nils On Thursday 27 November 2003 16:13, Alexander Mayrhofer wrote: