[SR-Users] simple way to access RR headers/uris and to remove them

[Daniel-Constantin Mierla]

Hello,

it may be useful to add it in the faq or mini-howtos on the wiki, 
wherever you consider more appropriate:

- https://www.kamailio.org/wiki/tutorials/faq/main
- https://www.kamailio.org/wiki/tutorials/mini-howto-admin/main

Cheers,
Daniel

On 6/4/13 6:54 PM, Klaus Darilion wrote:
> Finally I found it myself. For the records:
>
> To address a certain header (regardless if headers are in a single 
> line or in separate lines) use the @hf_value select. The trick is to 
> load the textopsx module (this select used to be in ser's textops 
> module). Note, header names must use '_' instead of '-'.
>
> To delete or manipulate a certain header also use the functions from 
> the textopsx module, e.g: remove_hf_value(). Note, here '-' is used 
> for headers with '-'
>
> For example, incoming message:
>
> Record-Route: <sip:1.1.1.1;lr=on;nat=yes>
> Record-Route: <sip:2.2.2.2:5060;lr;transport=udp>,
>    <sip:3.3.3.3:22506;lr;transport=udp>
>
> Dump all headers:
> xlog("$sel(@hf_value.Record_Route)");
>
> Dump the first header:
> xlog("$sel(@hf_value.Record_Route[1])");
>
> Dump the second last header:
> xlog("$sel(@hf_value.Record_Route[-2])");
>
>
> Remove the last header:
> remove_hf_value("Record-Route[-1]");
> or in above case:
> remove_hf_value("Record-Route[3]");
>
>
> regards
> Klaus
>
> On 04.06.2013 17:18, Klaus Darilion wrote:
>> Hi!
>>
>> Is there a simple way to:
>> - retrieve the RR headers (or Route/Contact ...) and to
>> - selectively remove them?
>>
>> E.g. retrieve <2> and delete <3>
>>
>> I do not want to care about the format, eg:
>> Record-Route: <1>, <2>, <3>
>> or
>> Record-Route: <1>
>> Record-Route: <2>
>> Record-Route: <3>
>>
>> Thanks
>> Klaus
>>
>>
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>
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio Advanced Training, San Francisco, USA - June 24-27, 2013
   * http://asipto.com/u/katu *