[Kamailio-Users] add Allow header to sl_send_reply

[Olle E. Johansson]

18 dec 2009 kl. 22.27 skrev Alex Balashov:

> On 12/18/2009 04:24 PM, Daniel-Constantin Mierla wrote:
>> Hi Alex,
>> 
>> On 12/18/09 9:57 PM, Alex Balashov 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.

/O