[Kamailio-Devel] How to check URI protocol ("sip", "sips", "tel") ? How to deal with a TEL URI ?

[Iñaki Baz Castillo]

Hi, perhaps I miss something but I don't find how to retrieve the RURI 
protocol (I don't mean the transport protocol but the URI protocol => sip, 
sips, tel...).

I don't want to do:
  if ($ru =~ "^tel:")


BTW I've realized that in case of receiving a TEL URI ("tel:+1234"), $rU shows 
the TEL number ("+1234") but doing:
  $rU = "+22222";
gives an error:

  ERROR:core:parse_uri: bad host in uri (error at char
  ERROR:core:parse_sip_msg_uri: bad uri <tel:+22222@>
  ERROR:domain:is_uri_host_local: Error while parsing R-URI

It seems that using "$rU=" inmediatelly converts the URI into a SIP URI. How 
to handle with a TEL URI number?

For example: imagine I receive a request with RURI as follows:

  INVITE tel:999888777;phone-context=+34 SIP/2.0

It's a local number and I want to convert it into a TEL global number 
(assuming "phone-context" contains the international prefix):

  INVITE tel:+34999888777 SIP/2.0

I see no clear way to do it.


Other example: I receive a request like:

  INVITE tel:+1234;custom-param=lalala SIP/2.0

and I want to change the number keeping the TEL parameters:

  INVITE tel:+999991234;custom-param=lalala SIP/2.0


Which TEL URI operations does Kamailio provide? I would like to work on it.

Regards.



-- 
Iñaki Baz Castillo