[Freeswitch-users] Freeswitch 1.8.2 : Debian Package : sometimes crash when executing nolocal:execute_on_answer lua script.

Fri Oct 12 22:01:20 UTC 2018

In order to look at this we can’t look at the core file directly, you’ll need to generate a backtrace from it so we can see.

https://freeswitch.org/confluence/display/FREESWITCH/Debugging#Debugging-GettingaBacktrace <https://freeswitch.org/confluence/display/FREESWITCH/Debugging#Debugging-GettingaBacktrace> 

Please update the bug when you have this info.

> On Oct 12, 2018, at 6:37 AM, Julien Terrasson <julien.terrasson at gmail.com> wrote:
> 
> I'm trying to use freeswitch as a transcription gateway : 
> 
> The goal is to allow a PSTN subscriber (A_party) to call another (B_party) through freeswitch : freeswitch being used to record and transcript the call. 
> 
> This is the scenario i'm trying to acheive : 
> 
> 1/ A_party call freeswitch through a PSTN gateway. 
> 
> 2/ freeswitch execute a lua script (IVRPrompt8.lua) that : 
> * query the service database 
> * Initialize few sessions variables 
> * Play A_party a vocal prompt. 
> * Attempt to bridge B_party. 
> 
> 3/ When B_party answer, a lua script is called : catchBAnswer2.lua 
> This script is used to initialise several session variable and play legal warning to both party. 
> 
> <extension name="experimental_dialplan"> 
>       <condition field="destination_number" expression="^(\+33XXXXXXXXX)$"> 
> 
> <!-- Play IVR to get the destination number and service parameters --> 
> <action inline="true" application="lua" data="IVRPrompt8.lua" /> 
> 
> <!-- Set channel record settings --> 
> <action application="export" data="RECORD_READ_ONLY=true"/> 
> <action application="export" data="RECORD_STEREO=false"/> 
> 
> <!-- Free the "#" terminator from other use--> 
> <action application="set" data="ivr_menu_terminator=none"/> 
> 
> <action application="export" data="nolocal:execute_on_answer=lua catchBAnswer2.lua"/> 
> 
> <!-- Finally bridge the call --> 
> <action application="bridge" data="sofia/gateway/ippi_33XXXXXXXXX/${destination_number}"/> 
> 
> </condition> 
>     </extension> 
> 
> Sometimes the scenario works just fine, but most of the time it crash when calling catchBAnswer2.lua, as show the last console logs (DEBUG LEVEL): 
> 
> 2018-10-12 09:42:26.812449 [NOTICE] sofia.c:7304 Pre-Answer sofia/external5090/0665199963! 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_channel.c:3482 (sofia/external5090/0665199963) Callstate Change RINGING -> EARLY 
> 2018-10-12 09:42:26.812449 [DEBUG] sofia.c:7291 Channel sofia/external5090/0665199963 entering state [ready][200] 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:5478 Audio Codec Compare [PCMA:8:8000:20:64000:1]/[PCMA:8:8000:20:64000:1] 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:5533 Audio Codec Compare [PCMA:8:8000:20:64000:1] ++++ is saved as a match 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:5394 Set telephone-event payload to 101 at 8000 <mailto:101 at 8000> 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:3781 Set Codec sofia/external5090/0665199963 PCMA/8000 20 ms 160 samples 64000 bits 1 channels 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_codec.c:111 sofia/external5090/0665199963 Original read codec set to PCMA:8 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:5737 Set telephone-event payload to 101 at 8000 <mailto:101 at 8000> 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:5795 sofia/external5090/0665199963 Set 2833 dtmf send payload to 101 recv payload to 101 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:8511 AUDIO RTP [sofia/external5090/0665199963] 94.23.42.139 port 29498 -> 194.169.214.61 port 59684 codec: 8 ms: 20 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_rtp.c:4300 Starting timer [soft] 160 bytes per 20ms 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:8815 sofia/external5090/0665199963 Set 2833 dtmf send payload to 101 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:8822 sofia/external5090/0665199963 Set 2833 dtmf receive payload to 101 
> 2018-10-12 09:42:26.812449 [DEBUG] switch_core_media.c:8845 sofia/external5090/0665199963 Set rtp dtmf delay to 40 
> 2018-10-12 09:42:26.812449 [NOTICE] sofia.c:8429 Channel [sofia/external5090/0665199963] has been answered 
> EXECUTE sofia/external5090/0665199963 lua(catchBAnswer2.lua) 
> 
> ** CORE DUMP ** 
> 
> I have no clues why this is happening, so i included the backtrack enclosed to have feedbacks (https://freeswitch.org/jira/browse/FS-11456 <https://freeswitch.org/jira/browse/FS-11456>).
> 
> Can somebody have a look and give a more precise idea on what is making freeswitch to crash ? 
> 
> I can then setup monitoring and collect additional traces if needed (SIP, RTP, etc..).
> 
> J. Terrasson
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