[Freeswitch-users] Writing FS apps via mod event socket + node.js

Fri Jun 6 22:11:52 MSD 2014

Hi,

I think you can do it but you have to dedicate time to understand 
node.js. With node.js you can create a server to attend request made 
from FreeSwtich, node.js will act as middleware and business logic. And 
there are several way to do it.

The first come to my mind is using mod_xml_curl 
<https://wiki.freeswitch.org/wiki/Mod_xml_curl> in your dialplan to make 
request to node.js. Node.js will respond to FS as according to your 
business logic.

The second way is with mod_curl <https://wiki.freeswitch.org/wiki/Mod_curl>.

The third way, you can use event socket 
<https://wiki.freeswitch.org/wiki/Mod_event_socket>.

So, in my opinion the most complex way could be event socket because 
almost all hard work would be in node.js side (in your app/development). 
With the two first options, is quite try to balance what things to do in 
FS and in Node.

Well, good luck.

On 06/05/2014 08:26 AM, Alex Lake wrote:
> Thanks - I've seen this, but the examples are not at all 
> representative of the sort of thing I want to be doing with freeswitch 
> (which is mostly about handling calls in accordance with a dialplan, 
> but with some complex stuff involving multi-legs). It makes me think I 
> must be barking up the wrong tree....
>
> These examples seem very much web-linked.
>
> Let's consider an example:
>
> If one wanted a very simple dynamic call mini-conference service - 
> call comes in from a PSTN gateway, the code hits an HTML server (eg. 
> using RESTful protocols) which returns a comma-separated list of 
> destinations and then the system bridges to these destinations. 
> Perhaps plays them a little fanfare and then links them all together 
> in a conference.
>
> I could do that with simple dialplan and Lua easy enough, but how 
> would I do it in node.js?
>
>> I have done some experimenting with NodeJs and FSW with the event 
>> socket library. This far it has worked fine and I am about to 
>> continue the integration of Node and FSW.
>>
>> Take a look at https://github.com/englercj/node-esl for a lib and 
>> examples.
>>
>>
>> On Thu, Jun 5, 2014 at 10:19 AM, Alex Lake <alex at digitalmail.com 
>> <mailto:alex at digitalmail.com>> wrote:
>>
>>     I'm interested in using node.js to write scripts to control
>>     Freeswitch-based telephony apps.
>>     This is partly because some of the apps we've been writing seem to be
>>     stretching the dialplan/Lua way of doing things - or at least my
>>     comprehension of the model - beyond what is commercially viable.
>>     What I
>>     mean is that writing and extending our apps (particularly when
>>     working
>>     with multiple call legs with complex inter-related state) is too
>>     expensive. It seems from reading around, that externalising the
>>     choreography of sessions is the choice of the fs cognoscenti.
>>
>>     However, there seems to be very little by the way of
>>     documentation and
>>     example non-trivial "cookbook" style apps around - or maybe I've just
>>     not been looking in the right places.
>>
>>     I get the strong impression that there are plenty of people here
>>     who've
>>     been there, done that and have the t-shirt. Just wondering what the
>>     chances are of a bit of sharing (obviously I'm happy to invest
>>     time into
>>     publishing my findings and creating new examples, etc)
>>
>>     _________________________________________________________________________
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>>
>> -- 
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>> *Oscar Franzén
>> */Developer/
>>
>> *
>>
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>
>
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