[Users] Availability Of the $dd Pseudo Variable

[Bogdan-Andrei Iancu]

Hi,

If not wrong, if you push a pseudo-variable that's empty to an AVP, you 
get the "NULL" string - this might be useful to you - use avp_print() to 
see if so.

regards,
bogdan

Tavis P wrote:

>Klaus Darilion wrote:
>  
>
>>Tavis P wrote:
>>    
>>
>>>I've been using the $dd variable to apply some workarounds for NAT
>>>hairpinning problems (by forcing mediaproxy), however i just realized
>>>that
>>>1.  When the received column in the Location database isn't populated
>>>(ie the client is using stun and a lookup() is executed for that
>>>username, the $dd variable is null even though the ruri contains a vaild
>>>ip:port
>>>      
>>>
>>the destination URI will only be used if it is different than the
>>request URI. Thus you can check if $dd is empty/null and use $rd
>>
>>regards
>>Klaus
>>
>>    
>>
>Ahh, thank you
>
>How would you recommend to check for null values?  The only method i've
>found so far is doing a regex match
>
>  
>
>>>This makes the $dd variable not ideal to  be used to check the
>>>destination IP address of locally registered clients
>>>
>>>Is it supposed to work this way?
>>>
>>>As an intern solution, i was able to execute "fix_nated_register()" for
>>>ALL registrations (previously i was only executing it for nat clients)
>>>
>>>tavis
>>>
>>>_______________________________________________
>>>Users mailing list
>>>Users at openser.org
>>>http://openser.org/cgi-bin/mailman/listinfo/users
>>>      
>>>
>>    
>>
>
>
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>  
>