[Asterisk-Users] username not stabled? * DO NOT USE USERNAME for locally attached phones!!!

[Olle E Johansson]

Chris A. Icide wrote:
> Ronald Wiplinger wrote:
> 
> <snip>
> 
>>
>>601, 602, 605, 606, 608, 609, 610, 615 and 616 are in sip.conf
>>621 and 626 are in Real-time sip_buddies
>>
>>621 and 626 changes username back from name to number (name) in the
>>database, and never shows it in "sip show peer"
>>
>>615 changed username "Ronald office" to 615, although no change in
>>sip.conf
>>
>>Did anybody else experienced that?
>>
>>*CLI> show version
>>Asterisk SVN-trunk-r8447M built by root @ vpbx on a x86_64 running
>>Linux on 2006-01-25 15:33:01 UTC
>>
> 
> <snip>
> 
> There is some code in asterisk which I'm not sure why it exists, that
> will set the username in memory to the user value in the SIP Contact
> header upon registration.  While this isn't normally a big deal, if you
> are using realtime, when a SIP UA registers, some things are written
> back to the realtime database, username being one of them.
> 
> I am not sure if this is a bug or not, as I don't understand the thought
> process behind allowing a sip ua to modify the username asterisk uses
> based on a sip header when it registers.
> 
> I went into the code and removed the username as a field that got
> written back to the realtime db upon registration and it fixed my problem.
> 
DO NOT USE USERNAME!

That feild is really something used together with defaultIP when we have 
*no* registration.

* When we have a registration, we use whatever the phone tells us in the 
Contact: header, which is a SIP requirement. That is why we change it to 
reflect the known contact, provided by the phone.

* We never change the device name of the phone, just the address we use 
to communicate with the phone.

* This name is not used for authentication by a phone, it is not the 
username you configure the phone with.

* In most cases, there is no need to use the "username=" option in 
sip.conf for phones.

I will soon change this setting to "defaultuser" to make it even more 
obvious that this is not anything you need to set. The phone name is 
whatever you have between the square brackets in sip.conf, both for 
users and peers.

I will check into the realtime code as well, to make sure we are 
changing the proper field in the database.

/Olle