[Freeswitch-users] Re- End Lua script after HangupHook handled without all the extra code to handle the return to the function

[Abaci B]

I would expect to be able to exit from a lua script without a while loop,
should I open a feature request on Jira for that?

On Wed, Mar 9, 2016 at 1:20 AM, Chad Phillips <chad at apartmentlines.com>
wrote:

> Andrew,
>
> Curious if this structure will work at the bottom of either a a Lua script
> or Lua function:
>
> do
>   return "exit"
> end
>
> I seem to recall that being a trick that helped for weird 'return' cases.
>
> Chad
>
> On Tue, Mar 8, 2016 at 12:54 PM, Andrew Keil <andrew.keil at visytel.com>
> wrote:
>
>> Michael,
>>
>>
>>
>> I have just run some more tests and you are correct that calling it
>> inside a while loop like what you explained below does work outside of the
>> hangup hook handler.  Thanks for providing this extra information.
>>
>>
>>
>> It should be noted that it does not work on its own simply at the bottom
>> of a Lua function (ie. as the last statement without a while loop) -
>> except as the last statement inside the hangup hook function.
>>
>>
>>
>> ie. This works:
>>
>> ----------------------------------------------------------------
>>
>>
>>
>>
>>
>> function CleanUp()
>>
>>                 freeswitch.consoleLog("CLEANUP SECTION\n")
>>
>>                 freeswitch.consoleLog("CLEANUP SECTION COMPLETE\n")
>>
>> end
>>
>>
>>
>> function myHangupHook(s, status, arg)
>>
>>                 freeswitch.consoleLog(string.format("%s DETECTED\n",arg))
>>
>>                 session:hangup()
>>
>>                 -- Run CleanUp function now since the caller has
>> disconnected
>>
>>                 CleanUp()
>>
>>                 -- Abort Lua script here to avoid returning to
>> MainService()
>>
>>                 return "exit"
>>
>> end
>>
>> -- Setup Hangup event handler here
>>
>> v_hangup = "HANGUP"
>>
>> session:setHangupHook("myHangupHook", "v_hangup")
>>
>>
>>
>> Whereas this does not work:
>>
>> ----------------------------------------------------------------
>>
>>
>>
>> function CleanUp()
>>
>>                 freeswitch.consoleLog("CLEANUP SECTION\n")
>>
>>                 freeswitch.consoleLog("CLEANUP SECTION COMPLETE\n")
>>
>>                 return "exit"
>>
>> end
>>
>>
>>
>> function myHangupHook(s, status, arg)
>>
>>                 freeswitch.consoleLog(string.format("%s DETECTED\n",arg))
>>
>>                 session:hangup()
>>
>>                 -- Run CleanUp function now since the caller has
>> disconnected
>>
>>                 CleanUp()
>>
>> end
>>
>> -- Setup Hangup event handler here
>>
>> v_hangup = "HANGUP"
>>
>> session:setHangupHook("myHangupHook", "v_hangup")
>>
>>
>>
>> Regards,
>>
>>
>>
>> Andrew
>>
>>
>>
>> *From:* freeswitch-users-bounces at lists.freeswitch.org [mailto:
>> freeswitch-users-bounces at lists.freeswitch.org] *On Behalf Of *Michael
>> Collins
>> *Sent:* Saturday, 5 March 2016 8:11 AM
>> *To:* FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
>> *Subject:* Re: [Freeswitch-users] Re- End Lua script after HangupHook
>> handled without all the extra code to handle the return to the function
>>
>>
>>
>>
>>
>>
>>
>> On Fri, Mar 4, 2016 at 9:19 AM, Abaci B <abaci64 at gmail.com> wrote:
>>
>> The question is not how to figure out when to exit the lua script, the
>> question is *how to exit the lua script*, and that can sometimes be
>> tricky or complicated as return "exit" only works from hangup hook.
>>
>>
>>
>> Are you positive that it works only from a hangup hook? It seems to work
>> at the end of any loop:
>>
>>
>>
>> -- testing exit (no session, call with luarun)
>>
>> freeswitch.consoleLog('INFO',"Starting infinite loop...\n")
>>
>> while(1) do
>>
>>   freeswitch.consoleLog('WARNING',"Before exit...\n")
>>
>>   return "exit"
>>
>> end
>>
>> freeswitch.consoleLog('INFO',"All done!\n")
>>
>>
>>
>>
>>
>> Or with a session:
>>
>> -- test exit with session, no hangup hook
>>
>> session:answer()
>>
>> freeswitch.consoleLog('INFO',"Entering main loop...\n")
>>
>> while ( session:ready() == true ) do
>>
>>   freeswitch.consoleLog('WARNING',"Inside loop...\n")
>>
>>   return "exit"
>>
>> end
>>
>> freeswitch.consoleLog('INFO',"All done!\n")
>>
>>
>>
>> In both cases I never see "All done!" at the CLI. Can you try it and see
>> if there's a scenario where it does not exit as expected?
>>
>>
>>
>> -MC
>>
>>
>>
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>
>
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>
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