[OpenSER-Users] Why every body return "404 Not Found" instead of "480 Not Available"?

[Cosimo Fadda]

Hi Iñaki,
my consideration on 404/480 responses comes both from RFC 3261 and from 
the RFC 3398 (Integrated Services Digital Network (ISDN) User Part 
(ISUP) to Session Initiation Protocol (SIP) Mapping)

ISUP Cause value                        SIP response
  ----------------                        ------------
  1  unallocated number                   404 Not Found
  2  no route to network                  404 Not found
  3  no route to destination              404 Not found

  19 no answer from the user              480 Temporarily unavailable
  20 subscriber absent                    480 Temporarily unavailable

Anyway it seems that the best practise is to send 404 both cases, but I 
prefer to distinguish this two situatations.

Cosimo Fadda


Iñaki Baz Castillo ha scritto:
> El Wednesday 05 March 2008 11:04:04 Iñaki Baz Castillo escribió:
>
>   
>> Why then every body suggest to reply "404 Not Found" when
>> "lookup(location)" returns -1? For example, the "registrar" module doc
>> suggests it:
>>
>>   Example 1-22. lookup usage
>>     lookup("location");
>>     switch ($?) {
>>       case -1:
>>       case -3:
>>           sl_send_reply("404", "Not Found");
>>           exit;
>>       case -2:
>>           sl_send_reply("405", "Not Found");
>>           exit;
>>     };
>>     
>
>
> IMHO it should be:
>
>   if ( ! does_uri_exist()) {
> 	## User doesn't exit here.
> 	sl_send_reply("404", "Not Found");
> 	exit;
>   }
>
>   if ( ! lookup("location")) {
> 	## User does exist, but it not registered now.
> 	sl_send_reply("480", "Not Available Now");
> 	exit;
>   }
>
>
>   


-- 
*Ing. Cosimo Fadda
System Engineer

Klarya s.r.l.*


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