[SR-Users] Get value from header and check value type

[Joel Serrano]

Hey Karsten,

I had a similar doubt and following Daniel's recommendation I went with the
same route you did (using {s.int} to convert to integer).

Quote from another thread: *"you can also convert the header value to
integer using the transformation {s.int <http://s.int/>}, that's safer if
you need to do other types of comparison such as > or <, because comparing
string values might give the result you don't expect"*

Hope this helps!

Joel.

On Fri, Oct 18, 2019 at 10:58 AM Karsten Horsmann <khorsmann at gmail.com>
wrote:

> Hi List,
>
> I use Kamailio 5.2.x and I want to fetch an value from an X Header and do
> some checks like "is not empty" and "should be an integer".
>
> AFAIK per default all values are strings with the hdr function.
>
> What are the best way for some validations within Kamailio script
> language?
>
>
> if(is_present_hf("X-someheader")) {
>                         $avp(routing_target) = $(hdr(X-someheader){s.int
> });
>
>  if(!ds_list_exists("$avp(routing_target)"))
> Cheers
> Karsten Horsmann
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