Re: [SR-Users] kamailio and app_python

Hello,

On 10/3/12 6:38 PM, Konstantin M. wrote:

Hello, I can contribute a python part, but currently I'm a very busy at the moment. I will write a patch to enable this ability (and many other features) as soon as possible.

great, looking forward to your contributions.

Cheers, Daniel

2012/10/3 Daniel-Constantin Mierla <miconda@gmail.com mailto:miconda@gmail.com>

Hello,

the best would be to enhance the module to be able to get/set
pseudo-variables. I am not a python guy at all, so I cannot help
much, however I can assist with the C side in kamailio if someone
starts development and has questions about PVs.

Calling config functions with parameters from embedded
interpreters exposes the risk of memory leaks, so it is better to
avoid it. Anyhow, added headers are not visible immediately (even
when done form config file), unless you call msg_apply_changes().

As a workaround for now, I suggest you put your token somehow in
request uri (e.g., a parameter).

Cheers,
Daniel


On 10/1/12 9:53 AM, Victor Seva wrote:

    Hi,

    is there any way to return values from a call to python_exec
    function
    orther than the default returned integer?

    Following code generates this error:
    Oct  1 09:08:23 zskio /usr/sbin/kamailio[21789]: ERROR: app_python
    [python_support.c:38]: python_exec2: Unhandled exception in
    the Python
    code:
    Oct  1 09:08:23 zskio /usr/sbin/kamailio[21789]: ERROR: app_python
    [python_support.c:78]: #011RuntimeError: no such function

                     if (!python_exec("get_provider",
    $(var(clean_uri){s.prefixes}))) {
                             xlog("L_ERR","Can not choose a
    provider for $rU\n");
                             sl_send_reply("503","Can not choose a
    provider
    for $rU");
                             exit;
                     }


    def get_provider(self, msg, param):
             # snipped code...
             result = self.util.get_provider(prefixes, position, mode)
             if result is not None:
                 LM_ERR("mode: %s position: %d result: %s" % (mode,
    position, result))
                 # this raises error
                 msg.call_function('rewritehost',
    result['provider']['ip'])
                 return 1
             return -1

    I tried to use headers as transport but this simple code does
    not work:

    Oct  1 09:45:31 zskio /usr/sbin/kamailio[22303]: ERROR:
    <script>: No header

                     if (!is_present_hf("X-Test-header")) {
                             xlog("L_ERROR", "No header\n");
                     }
                     else {
                             xlog("L_INFO", "Header added\n");
                     }

         def test_set_header(self, msg):
             msg.call_function('append_hf', 'X-Test-header: test\r\n')
             return 1

    Thanks in advance.

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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -
http://www.linkedin.com/in/miconda
Kamailio Advanced Training, Berlin, Nov 5-8, 2012 -
http://asipto.com/u/kat
Kamailio Advanced Training, Miami, USA, Nov 12-14, 2012 -
http://asipto.com/u/katu



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