9 Feb
2023
9 Feb
'23
5:06 a.m.
Hello,
On 08.02.23 23:30, Henning Westerholt wrote:
Hello,
if you are looking for a performance and light-solution, do not call an external script.
😉
Use the HTTP query methods, the overhead is much lower.
personally I would expect that exec (spawn + piping) to have less
transmission overhead than http query even on connection reuse (building
http message + network communication + parsing headers), but actually
the reason I wrote is to point that if someone is concerned of the
overhead and not sure what option to use, it can measure the performance
with benchmark module.
Also, to be clearer, execution of a lua/python/... script via
app_lua/app_python/... is not external script execution, the interpreter
is embedded, so it is internal execution. This is definitely faster and
preferred option compared to exec or http query.
Cheers,
Daniel
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com
-----Original Message-----
From: Dmytro M <mlistsdm(a)gmail.com>
Sent: Wednesday, February 8, 2023 7:16 PM
To: Kamailio (SER) - Users Mailing List <sr-users(a)lists.kamailio.org>
Subject: [SR-Users] Return value from lua/python/js/bash/etc... function
What is the simplest way to return values from external application into Kamailio config
and assign it to a variable?
I'm looking for the most light weight mechanism to do it and to offload some logic to
external app. Something like this would be ideal:
$var(myVar), $var(err) = lua_run("lua_func1", "$rU");
OR
$var(encString) = exec_cmd("echo 'abc $rU' | base64");
There is this method:
http_client_query("http://...", "", "",
"$var(result)"); but there is an overhead of networking and HTTP protocol.
Please advise.
Thanks, Dmytro
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