25 Jul
2019
25 Jul
'19
5:44 p.m.
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
25 Jul
25 Jul
6:29 p.m.
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<mailto: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
30 Jul
30 Jul
10:41 a.m.
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(a)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<mailto: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
10:50 a.m.
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><mailto: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<mailto: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
4:20 p.m.
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_li…
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:
--
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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(a)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:
--
Henning Westerholt - https://skalatan.de/blog/
Kamailio services - https://skalatan.de/services
_______________________________________________
Kamailio (SER) - Development Mailing List
sr-dev(a)lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev
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(a)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
4:25 p.m.
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.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
4:29 p.m.
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(a)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.com<http://www.asipto.com>
www.twitter.com/miconda<http://www.twitter.com/miconda> --
www.linkedin.com/in/miconda<http://www.linkedin.com/in/miconda>
1949
days inactive
1954
days old
6 comments
3 participants
participants (3)
-
Daniel-Constantin Mierla -
Henning Westerholt -
Ionut Razvan Ionita