[SR-Users] Can you use the sr.modf() method / function to call append_branch?

[Daniel-Constantin Mierla]

Hello,

I think that append_branch() is not exported directly to lua and calling
it via sr.modf() can expose you to memory leaks

Adding a new branch is possible via pseudo-variable, your sequence of
functions is same as:

$ru = "sip:a at example.com";
$branch(uri) = "sip:b at example.com";
$branch(uri) = "sip:c at example.com";
$branch(uri) = "sip:d at example.com";

In lua, you can use:

http://www.kamailio.org/wiki/embeddedapi/devel/lua#srpvsets

That should be safer.

Cheers,
Daniel

On 31/12/14 19:24, J Lee wrote:
> I would like to know if there's a way to do parallel forking via lua
> code.
>
> So specifically, I'd like to be able to do something like this:
>   seturi("sip:a at example.com <mailto:sip%3Aa at example.com>");
>   append_branch("sip:b at example.com <mailto:sip%3Ab at example.com>");
>   append_branch("sip:c at example.com <mailto:sip%3Ac at example.com>");
>   append_branch("sip:d at example.com <mailto:sip%3Ad at example.com>");
>
>   t_relay();
>
> except via lua, because the list of branches is dynamic. I've tried the following: 
>
>    sr.modf("append_branch","sip:10.x.x.x")
>
> but the error message I'm getting is: 
> /usr/sbin/kamailio[7437]: ERROR: app_lua [app_lua_sr.c:177]: lua_sr_modf(): function 'append_branch' is not available 
>
> Just wondering if I "should" be able to do this. 
> I've been reading http://www.kamailio.org/wiki/embeddedapi/devel/lua#srtm_package but haven't seen any references to append_branch. 
>
> The other alternative I'm looking at is to just use lua to generate the list of destinations and pass back a hashtable of sorts to
> the cfg file. Then from there I will try to loop through the hashtable and do the append_branch command for each entry
> in the table. 
>
> If you have other suggestions, I'd appreciate it. 
> Thanks. 
>
>
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-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda

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