[sr-dev] git:master: evapi: new module to push event details via tcp to external applications

Daniel-Constantin Mierla miconda at gmail.com
Mon Mar 17 14:05:05 CET 2014


On 13/03/14 10:51, Olle E. Johansson wrote:
> On 12 Mar 2014, at 21:51, Daniel-Constantin Mierla <miconda at gmail.com> wrote:
>
>> evapi: new module to push event details via tcp to external applications
> I think this is a great start - but also (based on my exprience with Asterisk manager) complex.
>
> Would it be beneficial to have a larger discussion about requirements and formats before too
> much code is produced?
Yes, I will start it very soon, just didn't have time yet -- I had the 
code already working as prototype, so I pushed to have something to rely on.

>
> If I understand correctly, we only have one type of message - "event". Is there a need for other
> types of messages?

We will discuss and decide.
>
> Using a Json payload for the payload seems clever and extensible to me.
>
> When a connection is opened, should we send an event to identify a particular server, version of the server and version of the evapi so that client can handle changes and upgrades in the future?
>
> Should potential commands  from client to server be done over the standard RPC commands - do we really need a new way for clients to control Kamailio? The event part was clearly missing, but we have a few ways to connect to Kamailio already.
>
> Can we protect this listen port with TLS? Do we need authentication?
Authentication is planned, tls can be added in the future. Main goal is 
for local communication between kamailio and some application. But then 
it can be extended as needed.

I was using libev, not the core code for transport, thinking of playing 
with this framework for concurrency, not expecting anyhow lot of 
connections there. It might be a good reason to try gnutls particulary 
for this case when we want to add tls to see if is easier/better in any 
way than openssl.

Cheers,
Daniel

>
> Just a few thoughts. This will be a very important new feature, so it's important we get it right.
>
> Thank you for starting this, Daniel!
> /O
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-- 
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference - April 2-4, 2014, Berlin, Germany
http://www.kamailioworld.com




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