Posted: Thu Jul 20, 2006 5:00 pm Post subject: [asterisk-doc] How to write new application for Asterisk by
On Thu, 20 Jul 2006, Tilghman Lesher wrote:
Quote:
On Thursday 20 July 2006 01:38, Thabang Kevin Khanye wrote:
> Ok, thats touching.. Regarding the application that links to
> asterisk, I was forwarded to asterisk.org/doxygen, app_skel.c, look
> there. After you've figured out what that diagram means, please
> disect it and give us the summarised version.
The diagram is just a dependency graph. Myself, I usually just look
at the source code.
Would it be helpful for you to know that when I code a new
application, I copy an existing application and modify it? And I'm
one of the more prolific application authors. Probably one of the
simplest applications that actually does something is app_sayunixtime.
This is because the vast majority of the code that I wrote for it got
added to say.c because it would be useful elsewhere. So all of the
code in app_sayunixtime.c is just parsing arguments and calling a
common API.
app_skel shows you how to parse more complex application arguments,
such as options that themselves take an argument, e.g. M(foo). You
may or may not need them, but having the simplest case for parsing
them is probably helpful.
Would you be willing to post a quick three paragraph about how writing
your own app is easy, maybe throwing in lines of code to explain what they
do, where they go and are used, etc?
Questions I would have:
When I write my app, how do I link it into Asterisk?
Why is attempting to answer the channel important in my app?
For an alias like datetime, why does load and unload use res |= instead
of res = ? (OK, this may be my lack of C knowledge -- is it just
concat?)
Once I write it, what's the testing procedure?
Is there anything else to do other than write app_myapp.c?
What other #include files might be useful in writing apps?
When I test, I get (this common error). How to fix?
It does seem pretty straight forward.
Beckman
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Peter Beckman Internet Guy
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