To FreeSWITCH users,
After progressing with Lua inside FreeSWITCH I have a question that I cannot source an answer for within the current FreeSWITCH documentation.
I have a requirement for an external application to process an event (via the event socket layer) then return the results back to the application while an audio file is played back in a loop to the caller.
From the current documentation this method allows for the event to be sent then the return event is “consumed” using a polling approach. However the caller is listening to silence.
function poll()
-- create event and listener
local event = freeswitch.Event("CUSTOM", "ping::running?")
local con = freeswitch.EventConsumer("CUSTOM", "ping::running!")
-- add text ad libitum
event:addHeader("hi", "there")
-- fire event
event:fire()
-- and wait for reply but not very long
local retevent = con:pop(1, 5000)
if retevent then
print("reply received")
freeswitch.consoleLog("DEBUG", string.format("reply received: %s\n",retevent:getHeader("Result")))
return true
end
print("no reply")
freeswitch.consoleLog("DEBUG", "no reply\n")
return false
end
Some questions:
1)
Is there a way to playback audio (eg. session:streamFile(…)) while this takes place, since currently session:streamFile(…) seems to be a blocking function (ie. Finishes when the audio file is played back completely)?
2)
Is there a way to use session:setInputCallback(…) to handle an external CUSTOM event being returned (since this would then be able to interrupt the session:streamFile(…) just like it does for DTMF or speech recognition)?
If you have a preferred approach to solving this then I am open to your suggestions.
I appreciate any assistance that you can give.
Kind Regards,
Andrew Keil