Hello all,

There seems to be an deadlock between registrar and pua_reginfo module whenever a SIP client refreshes its registration.

1. The pua_reginfo does not publish Event:reg when a sip client registers for the first time.

2. The pua_reginfo module does not use ul.lock_udomain() to lock the ul table to get the record.

3. The pua_reginfo does not release the record that it accessed from ul.get_urecord()

Since the record is not released, when the client re-registers, the registrar module is unable to query for the userlocation and sends a 200 OK response with 0 bindings.

Which leads to no contact header in the response message and eventually deletion of the record in the location table(expires).

I have tried to fix this using lock_udomain, release_urecord and unlock_udomain, but failed to rectify the error.

The deadlock happens in modules_k/usrloc/udomain.c (db_load_urecord()).

if (ul_dbf.query(_c, keys, 0, vals, columns, (use_domain)?2:1, 13, order,

                                &res) < 0)

My Question:

1. is pua_reginfo supposed to delete record from location database and send the same data to a presence server?

a. If above is true, then should the registrar module insert a new record in the location table?

b. If above is false, the registrar module should be able to refresh/update the record in the location table.

This error is also impacts pua_usrloc module too as it cannot access the record and sends creates an incorrect uri.

Help:

I’m new and learning how Kamailio works, is there a clean way that pua_reginfo module gets the record?

Gnaneshwar Gatla | InTouch Health | Software Developer

6330 Hollister Ave. Goleta CA, 93117 | P: 805.562.8686 ext: 199