On Mon, Nov 16, 2009 at 9:36 AM, Jerry Richards <jerry.richards@teotech.com> wrote:

I have a bit of confusion about Lua scripting.  When a script is invoked,
should it always return an XML string that is used by FS?  Or as in the case
of dialplan examples, does it actually execute the dialplan (e.g.
"session:answer();")?

Best Regards,
Jerry

Jerry,

A Lua script that is explicitly called from the dialplan will indeed execute dialplan-ish stuff. For example, let's say you had this in conf/dialplan/default.xml:

<extension name="lua sample">
  <condition field="destination_number" expression="9876">
    <action application="lua" data="/path/to/myluascript.lua"/>
  </condition>
</extension>

Then myluascript.lua has something like:

--Sample Lua script
session:answer()
session:sleep(1000)
session:streamFile("/path/to/file.wav")
session:hangup()

Assuming an otherwise default install, the above Lua script would execute when a caller dialed 9876, or if a call was x-ferred to 9876.

However, if you're wanting to use Lua to serve up a dialplan then it's totally different. Lua is not called from the dialplan; Lua provides the dialplan to FreeSWITCH. This latter case is the scenario discussed in the wiki section you referenced. (http://wiki.freeswitch.org/wiki/Lua#For_serving_configuration)

Are you trying to use Lua scripting for serving up a dynamic configuration of some sort?
-MC