Hello,

Thank you for your reply. One more question. How am I supposed to access parameters inside a header. If the header has this format

<URI>; reason=someReason;index=someIndex

Is there any othere way than using regex to access these parameters?

Thank you,

Ionut

________________________________ From: Henning Westerholt hw@skalatan.de Sent: Thursday, July 25, 2019 7:29 PM To: Kamailio (SER) - Development Mailing List; Ionut Razvan Ionita Subject: Re: [sr-dev] Parsing list of headers

Hello Ionut,

if you like to do it in the cfg - just some ideas:

- iterate in a loop over the number of headers $hdrc

- access with the loop variable the respective header $hdr[i]

- do your operation, save temporary results in another $avp

- finish the operation by appending your header from the $avp

These PVs are (as usual) documented in the cookbook.

Cheers,

Henning

Am 25.07.19 um 17:44 schrieb Ionut Razvan Ionita:

Hello all,

I am trying to implement RFC 7544 in kamailio.cfg, more specifically to transform Diversion header into History-Info. To do this I need to iterate over all Diversion headers and be able to get all the parameters from it. At first I discovered $di core variable, but I can access only the first header with it. I discovered kamailio selectors but I can't index them with a variable. I came to the point where I want to implement variable indexing to selectors but after I saw this API is quite complex I thought to ask here if there's any other solution to do this?!

Thanks,

Ionut

_______________________________________________ Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.orgmailto:sr-dev@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev

-- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://skalatan.de/services

Hello,

actually in this case is better to use first tobody.params and then param transformations:

- https://www.kamailio.org/wiki/cookbooks/5.2.x/transformations#tobodyparams

- https://www.kamailio.org/wiki/cookbooks/5.2.x/transformations#parameters_lis...

The value is not a SIP URI only, but a SIP URI followed by header parameters.

Cheers, Daniel

On 30.07.19 10:50, Henning Westerholt wrote:

Hi Ionut,

if you are referring to URI parameters, there is a transformation for that :-)

https://www.kamailio.org/wiki/cookbooks/5.2.x/transformations#uriparams

Cheers,

Henning

Am 30.07.19 um 10:41 schrieb Ionut Razvan Ionita:

...

Hello,

Thank you for your reply. One more question. How am I supposed to access parameters inside a header. If the header has this format

<URI>; reason=someReason;index=someIndex

Is there any othere way than using regex to access these parameters?

Thank you,

Ionut

---

*From:* Henning Westerholt hw@skalatan.de *Sent:* Thursday, July 25, 2019 7:29 PM *To:* Kamailio (SER) - Development Mailing List; Ionut Razvan Ionita *Subject:* Re: [sr-dev] Parsing list of headers

Hello Ionut,

if you like to do it in the cfg - just some ideas:

• iterate in a loop over the number of headers $hdrc

• access with the loop variable the respective header $hdr[i]

• do your operation, save temporary results in another $avp

• finish the operation by appending your header from the $avp

These PVs are (as usual) documented in the cookbook.

Cheers,

Henning

Am 25.07.19 um 17:44 schrieb Ionut Razvan Ionita:

...

Hello all,

I am trying to implement RFC 7544 in kamailio.cfg, more specifically to transform Diversion header into History-Info. To do this I need to iterate over all Diversion headers and be able to get all the parameters from it. At first I discovered $di core variable, but I can access only the first header with it. I discovered kamailio selectors but I can't index them with a variable. I came to the point where I want to implement variable indexing to selectors but after I saw this API is quite complex I thought to ask here if there's any other solution to do this?!

Thanks,

Ionut

---

Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev

-- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://skalatan.de/services

-- Henning Westerholt - https://skalatan.de/blog/ Kamailio services - https://skalatan.de/services

---

Kamailio (SER) - Development Mailing List sr-dev@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev

Hi all,

In the end I was successfull using param.value transformations for the parameters in the header and tobody.uri to get the URI. Thank you for your your help!

Ionut

________________________________ From: Daniel-Constantin Mierla miconda@gmail.com Sent: Tuesday, July 30, 2019 5:25 PM To: Kamailio (SER) - Development Mailing List; Ionut Razvan Ionita Subject: Re: [sr-dev] Parsing list of headers

Hello,

On 25.07.19 17:44, Ionut Razvan Ionita wrote:

Hello all,

I am trying to implement RFC 7544 in kamailio.cfg, more specifically to transform Diversion header into History-Info. To do this I need to iterate over all Diversion headers and be able to get all the parameters from it. At first I discovered $di core variable, but I can access only the first header with it. I discovered kamailio selectors but I can't index them with a variable. I came to the point where I want to implement variable indexing to selectors but after I saw this API is quite complex I thought to ask here if there's any other solution to do this?!

if you refer to $sel(...) and they do not support variables for index, you can try:

- double evaluation using pv_evalx() - https://www.kamailio.org/docs/modules/devel/modules/pv.html#pv.f.pv_evalx

- use an embedded script with inline execution -- eg app_jsdt doesn't have external dependencies and you can run a small javascript script where you can use local variables for index and construct the $sel() as you need, then pass that to KSR.pv.get(...).

Cheers, Daniel

-- Daniel-Constantin Mierla -- www.asipto.comhttp://www.asipto.com www.twitter.com/micondahttp://www.twitter.com/miconda -- www.linkedin.com/in/micondahttp://www.linkedin.com/in/miconda