[SR-Users] Parsing diversion headers correctly

[Joel Serrano | VOZELIA]

I knew there had to be a better option! Thanks Federico :) 

Best regards, 
Joel.

----- Original Message -----
> From: "Federico Cabiddu" <federico.cabiddu at gmail.com>
> To: "Kamailio (SER) - Users Mailing List" <sr-users at lists.sip-router.org>
> Sent: Friday, June 24, 2016 11:45:50 PM
> Subject: Re: [SR-Users] Parsing diversion headers correctly

> Hi Joel,
> to the extract the username part of the last Diversion header you could modify
> your last example like this:

> $(hdr(Diversion)[-1]{nameaddr.uri}{uri.user})

> Regards,

> Federico

> On Sat, Jun 25, 2016 at 3:23 AM, Joel Serrano | VOZELIA < joel at vozelia.com >
> wrote:

>> Hi,

>> If you receive an INVITE with 2 diversion headers such as (in this order):

>> Diversion: <sip:9975 at X.X.X.X:5060>;privacy=off;screen=no; reason=user-busy;
>> counter=1
>> Diversion: <sip:1234567890 at Z.Z.Z.Z:5060>;privacy=off;screen=no; reason=unknown;
>> counter=1

>> How is a nice way of extracting the user part from the URI of the last one? (in
>> this case: 1234567890)

>> Problems I have found:

>> $(di{uri.user}) ---> Give mes the user part of the URI of the first header, in
>> this case: 9975

>> Is there a way to tell $di to get its value from the last header instead of the
>> first one?

>> This example works:

>> $(hdr(Diversion)[-1]{ param.name ,0}{s.strip,1}{s.striptail,1}{uri.user})

>> But I think it is very hacky...

>> Any better approach anyone can suggest me?

>> Thanks in advance.

>> Best regards,
>> Joel.

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