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<div class="WordSection1">
<p class="MsoNormal">To FreeSWITCH users,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am currently experimenting with Lua scripts on FreeSWITCH (latest build) and found an interesting issue with FreeSWITCH default CDRs (inside log/cdr-csv/1000.csv).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">See below for my simple Lua script called from a diaplan as follows:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><include><o:p></o:p></p>
<p class="MsoNormal"> <!-- To test Lua script --><o:p></o:p></p>
<p class="MsoNormal"> <extension name="ivr_demo"><o:p></o:p></p>
<p class="MsoNormal"> <condition field="destination_number" expression="^(9101)$"><o:p></o:p></p>
<p class="MsoNormal"> <action application="lua" data="myservice.lua"/>
<o:p></o:p></p>
<p class="MsoNormal"> </condition><o:p></o:p></p>
<p class="MsoNormal"> </extension><o:p></o:p></p>
<p class="MsoNormal"></include><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I noticed is that placing a call into FreeSWITCH via a SIP phone (calling 9101) and landing on myservice.lua everything processes as expected. If I hangup after 3 seconds then I should expect the CDR to show ${billsec} = 3. However
this is not the case since both ${duration} and ${billsec} are actually set once the Lua script completes (not based on HANGUP). So inside 1000.csv I see duration and billsec both having 8 seconds.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You will see below that inside my hangup handler (function myHangupHook(s, status, arg)) I fire an event and wait up to 5000ms for an event to be returned (currently I am not returning an event so the 5000ms will take place). This explains
the extra 5 seconds after the 3 seconds of the call.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My question is since FreeSWITCH knows that the HANGUP has taken place why is the ${billsec} not correct (ie. should be 3 seconds)?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I tried adding “session:hangup()” as the first line inside my hangup handler (function myHangupHook(s, status, arg)) and this made no difference.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Is there a solution to this issue? Perhaps there is a different CDR variable that will contain the correct duration based on when HANGUP was actually received.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance for any assistance with this.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Andrew Keil<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Simple Lua Script:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-- myservice.lua<o:p></o:p></p>
<p class="MsoNormal">-- To test a simple service<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">function MainService()<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "MAIN SERVICE SECTION\n")<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> -- answer the call<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "ANSWER CALLER\n")<o:p></o:p></p>
<p class="MsoNormal"> session:answer();<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> -- sleep a second<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "Sleep for 1000ms\n")<o:p></o:p></p>
<p class="MsoNormal"> session:sleep(1000);<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "Playing 12345\n")<o:p></o:p></p>
<p class="MsoNormal"> session:say("12345", "en", "number", "pronounced");<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "Finished playing 12345\n")<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> if (session:ready()) then<o:p></o:p></p>
<p class="MsoNormal"> -- hangup<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "HANGUP\n")<o:p></o:p></p>
<p class="MsoNormal"> session:hangup() <o:p></o:p></p>
<p class="MsoNormal"> end<o:p></o:p></p>
<p class="MsoNormal">end<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-- Functions section …<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">function myHangupHook(s, status, arg)<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "myHangupHook: " .. status .. "\n")<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"> -- send hangup event test (after caller hangs up)<o:p></o:p></p>
<p class="MsoNormal"> local event = freeswitch.Event("CUSTOM", "visytel::HANGUP?")<o:p></o:p></p>
<p class="MsoNormal"> event:addHeader("hi", "there")<o:p></o:p></p>
<p class="MsoNormal"> event:addHeader("channel-uuid", channeluuid)<o:p></o:p></p>
<p class="MsoNormal"> -- Add Event consumer if a response is required!<o:p></o:p></p>
<p class="MsoNormal"> local con = freeswitch.EventConsumer("CUSTOM", "visytel::HANGUP!")<o:p></o:p></p>
<p class="MsoNormal"> -- fire event<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "Fire HANGUP event\n")
<o:p></o:p></p>
<p class="MsoNormal"> event:fire() <o:p></o:p></p>
<p class="MsoNormal"> -- Wait for 5000ms to test response<o:p></o:p></p>
<p class="MsoNormal"> local retevent = con:pop(1, 5000)<o:p></o:p></p>
<p class="MsoNormal"> if retevent then<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", "Reply received!\n")<o:p></o:p></p>
<p class="MsoNormal"> freeswitch.consoleLog("INFO", string.format("Reply received: %s\n",retevent:getHeader("Result")))<o:p></o:p></p>
<p class="MsoNormal"> end<o:p></o:p></p>
<p class="MsoNormal">end<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-- Setup handlers here<o:p></o:p></p>
<p class="MsoNormal">myparam="empty";<o:p></o:p></p>
<p class="MsoNormal">session:setHangupHook("myHangupHook", "myparam")<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-- Source channel-uuid here {used inside myHangupHook handler and for all fired events inside the header<o:p></o:p></p>
<p class="MsoNormal">channeluuid = session:getVariable("uuid");<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">MainService()<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-- End of lua script<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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