25 Apr
2017
25 Apr
'17
11:09 p.m.
Hi,
reusing the same connection to the same url is delegated to liburl, so you
can have that when using http_async_client.
More workers will increase the capacity at the price of resources (shared
memory).
I wrote a wrap up about building the request payload here:
https://lists.kamailio.org/pipermail/sr-users/2016-December/095454.html -
please double check escaping.
The function methods have been reviewed in version 5 and removed, replaced
by pseudovariable settings which is more common practice in kamailio.
Instead of http_append_header() use
$http_req(hdr) = "X-theheader: the value";
Instead of http_set_method() use
$http_req(method) = "POST";
The latest documentation requires a little review for some mentions of the
old functions. Will try to fix as soon as possible.
Best Regards,
Giacomo
On 25 April 2017 at 19:02, Pranathi Venkatayogi <pvenkatayogi(a)cyracom.com>
wrote:
I recently successfully used http_async_client for
POST. Will try to help
you out here -
*From:* sr-users [mailto:sr-users-bounces@lists.kamailio.org] *On Behalf
Of *Ramachandran, Agalya (Contractor)
*Sent:* Tuesday, April 25, 2017 10:17 AM
*To:* giacomo.vacca(a)gmail.com; sr-users(a)lists.kamailio.org
*Subject:* [SR-Users] Query with regard to http_client and
http_async_client
Hi Giacomo,
I have few questions with regard to rest client in kamailio.
1) I see there are two modules in kamailio for rest client.
http_client, http_async_client.
I hope http_client does the http transfer in synchronous way.
http_async_client does the http transfer in asynchronous manner.
Correct me if am wrong here.
Correct.
2) I want to achieve https transfers in async way, so choosing
http_async_client.
Is there a way that kamailio *maintains persistent TCP connection
pooling for http transfer*.
I see there is a “workers” parameter in http_async_client. By increasing
this number does it result it more http request’s handling?
Let the author reply here.
3) Also, I have some questions regarding documentation for module
http_async_client in 5.0 version.
In the API exposure, it says *“http_async_query(url, route_name)”*.
But the example if I want to use *POST*, it says
*“http_async_query("http://example.com/test.php
<http://example.com/test.php>", "{'r_uri':'$rU',
'f_uri':'$fU'}",
"HTTP_REPLY");”*
There is a parameter mismatch between the example and the actual function.
If I try to use *GET* query, kamailio service is starting. But if I try
to give the *POST* query with payload, kamailio service is not started.
It says, sctp_core_destroy(): SCTP API not initialized.
Also I have noticed that, functions like http_append_header(),http_set_method()
are removed in 5.0 version, whereas we have this API’s is 4.x versions.
Is there some issue with the documentation for 5.0 ?
I used it like this and it works - http_async_query("http://TEXT_
BROKER/api/events/CallAnswered",
"{'CallId':'$ci', 'Time' :
'$TF'}",
"HTTP_REPLY");
Issue may be with quotes. Make sure you don’t have “ in the second
parameter content. If you send Kamailio log it will be easier to debug.
Please let me the know the details for the above queries.
Regards,
Agalya