[Kamailio-Users] add Allow header to sl_send_reply

[Daniel-Constantin Mierla]

On 12/19/09 10:35 AM, Olle E. Johansson wrote:
> [...]
>>>>>
>>>>>            
>>>>>> Daniel,
>>>>>>
>>>>>> But the documentation
>>>>>>
>>>>>> http://www.kamailio.org/docs/modules/1.5.x/textops.html#id2506229
>>>>>>
>>>>>> says that append_hf() can be used inside a reply route?
>>>>>>
>>>>>>              
>>>>> yes, it can be used. The nuance in the initial question, as I
>>>>> understood, was to add a header to a reply for current processed
>>>>> request. with append_hf you add a header to the current processed sip
>>>>> message (no matter is request or reply).
>>>>>
>>>>> append_to_reply() adds a header to any eventual reply kamailio may send
>>>>> for the request being processed, not visible in the request if that is
>>>>> forwarded.
>>>>>
>>>>> Just to give an example, save("location") sends a reply from inside the
>>>>> function. If you want to have a custom header in that reply, that can be
>>>>> done with append_to_reply().
>>>>>
>>>>>            
>>>> Oh, I see.  I did not realise append_hf() always applied to the request context only.  Thanks a lot!  Learn something new every day.
>>>>
>>>>          
>>> I think the confusion is about which message you process in the on_reply branches - you actually process the initial request that you triggered with a reply route in the initial processing, not the reply. Thus if you use append_hf - you add a header to the request, not the response.
>>>
>>>
>>>        
>> a clarification for above: in onreply_route you process the reply and append_hf() adds a header to reply.
>>
>> To put it in another words:
>> - in route {...} - sip request is processed and append_hf() adds a header to that request. If you want to send a reply for that request from kamailio, then append_to_reply() can be used to add headers in the to-be-built reply
>> - in onreply_route - sip reply is processed and append_hf() adds a header to that reply. append_to_reply() cannot be used in onreply_route.
>>
>>      
> Thanks for the clarification. Lot's of interesting misunderstandings in this thread :-)
>    
The documentation is not very rich regarding these two functions, I have 
to say, hopefully someone will find time to put more there :-) :

http://kamailio.org/docs/modules/3.0.x/modules_k/textops.html#id2494805

Cheers,
Daniel

-- 
Daniel-Constantin Mierla
* http://www.asipto.com/