[Freeswitch-users] Lua not playing any WAV files

Thu Dec 2 18:17:27 MSK 2010

Hi all,

I have run into an issue on something so basic that I must be as simple as
enabling a feature somewhere.

I have been trying to get lua to play a message from a WAV file. I have
tried session:execute("playback", main_msg) and
session:streamFile(ivr_invalid_msg) but neither of them play any music to
the caller. I tried both to answer and preAnswer the call first but it made
no difference. However if I put the same file into the XML dialplan and play
it with the commands below I hear the music fine.
<action application="set" data="playback_terminators=#"/>
<action application="playback" data="${401_sound_file_path}"/>

The issue only seems to be from lua when playing any type of wav file and
those files are definitelly there as can be read by the XML

The error message is below for the execute(playback) command, but nothing
can be seen for the
2010-12-01 11:56:01.534727 [DEBUG] switch_core_session.c:1827 Application
playback Requires media! pre_answering channel
sofia/external/2031701665 at 194.0.147.16:5060 EXECUTE
sofia/external/2031701665 at 194.0.147.16:5060playback(/usr/local/freeswitch/sounds/svc_sound_files/default_autoattendant.wav)

But there is no mention of the streamFile command. I have had similar issue
with the PlayAndGetDigits command.
Is there something that I need to enable in lua so that is can playback
messages to the caller.

Many thanks to anyone who can help.
Marc

below is the XML dialplan and lua script as well as the log at the very end.

XML DIALPLAN:
<include>
<extension name="IVR_FROM_MYSQL">
<condition field="caller_id_number" expression="Anonymous" break="never">
<action application="set" data="effective_caller_id_number=0000000000"/>
</condition>
<condition field="destination_number" expression="^(404)">
<action inline="true" application="lua" data="ivr_mysql.lua
${destination_number:3}"/>
<action application="set" data="effective_caller_id_name=${404_tag}"/>
<action application="bridge" data="${404_dial}"/>
</condition>
</extension>
</include>

The LUA script ivr_mysql.lua is callsed and this is it.
-- IVR : PLAY IVR WAV FILES
-- Global Variables:
local dialstr_prefix = "sofia/gateway/CS2k/"
local dialstr_main = ""
local breakoutcode = "184"
local sound_file_folder = "/usr/local/freeswitch/sounds/svc_sound_files/"
local ddi = argv[1]
-- answer the call
session:preAnswer();
freeswitch.consoleLog("info", "All Answered\n");

ivr_invalid_msg = sound_file_folder .. "invalid_msg.wav"
main_msg = sound_file_folder .. "default_autoattendant.wav"
-- Play with Execute
session:execute("playback", main_msg)
-- Play with StreamFile
session:streamFile(ivr_invalid_msg);
dialstr_main  = dialstr_main .. dialstr_prefix .. breakoutcode ..
"02031701665"
session:setVariable("404_dial",dialstr_main)
session:setVariable("404_tag","IVR")

RELEVANT LOGS :
Dialplan: sofia/external/2031701665 at 194.0.147.16:5060 Regex (PASS)
[IVR_FROM_MYS                          QL] destination_number(4042031956241)
=~ /^(404)/ break=on-false
Dialplan: sofia/external/2031701665 at 194.0.147.16:5060 Action
lua(ivr_mysql.lua $                          {destination_number:3}) INLINE
EXECUTE sofia/external/2031701665 at 194.0.147.16:5060 lua(ivr_mysql.lua
2031956241                          )
2010-12-01 11:56:01.525426 [INFO] switch_cpp.cpp:584 Sending early media
2010-12-01 11:56:01.525426 [DEBUG] sofia_glue.c:2972 AUDIO RTP
[sofia/external/2                          031701665 at 194.0.147.16:5060]
10.5.2.105 port 29900 -> 194.0.147.164 port 50202 c
odec: 8 ms: 20
2010-12-01 11:56:01.525426 [DEBUG] switch_rtp.c:1418 Starting timer [soft]
160 b                          ytes per 20ms
2010-12-01 11:56:01.532280 [DEBUG] sofia_glue.c:3190 Set 2833 dtmf send
payload                           to 101
2010-12-01 11:56:01.532280 [DEBUG] sofia_glue.c:3195 Set 2833 dtmf receive
paylo                          ad to 101
2010-12-01 11:56:01.532280 [DEBUG] mod_sofia.c:2172 Ring SDP:
v=0
o=FreeSWITCH 1291174661 1291174662 IN IP4 10.5.2.105
s=FreeSWITCH
c=IN IP4 10.5.2.105
t=0 0
m=audio 29900 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=silenceSupp:off - - - -
a=ptime:20
a=sendrecv
2010-12-01 11:56:01.532280 [NOTICE] mod_sofia.c:2175 Pre-Answer
sofia/external/2                          031701665 at 194.0.147.16:5060!
2010-12-01 11:56:01.532280 [DEBUG] switch_channel.c:2544
(sofia/external/2031701                          665 at 194.0.147.16:5060)
Callstate Change RINGING -> EARLY
2010-12-01 11:56:01.534727 [DEBUG] sofia.c:4576 Channel
sofia/external/203170166
5 at 194.0.147.16:5060skipping state [early][183]
2010-12-01 11:56:01.534727 [DEBUG] switch_core_session.c:676 Send signal
sofia/e                          xternal/2031701665 at 194.0.147.16:5060[BREAK]
2010-12-01 11:56:01.534727 [INFO] switch_cpp.cpp:1181 All Answered
2010-12-01 11:56:01.534727 [DEBUG] switch_core_session.c:1827 Application
playba                          ck Requires media! pre_answering channel
sofia/external/2031701665 at 194.0.147.16:                          5060
EXECUTE sofia/external/2031701665 at 194.0.147.16:5060playback(/usr/local/freeswit
ch/sounds/svc_sound_files/default_autoattendant.wav)
2010-12-01 11:56:01.537644 [DEBUG] switch_cpp.cpp:972
sofia/external/2031701665@
194.0.147.16:5060destroy/unlink session from object
Dialplan: sofia/external/2031701665 at 194.0.147.16:5060 Action
set(effective_calle                          r_id_name=${404_tag})
Dialplan: sofia/external/2031701665 at 194.0.147.16:5060 Action
bridge(${404_dial})
2010-12-01 11:56:01.537644 [DEBUG] switch_core_state_machine.c:119
(sofia/extern                          al/2031701665 at 194.0.147.16:5060)
State Change CS_ROUTING -> CS_EXECUTE
2010-12-01 11:56:01.537644 [DEBUG] switch_core_session.c:1057 Send signal
sofia/                          external/2031701665 at 194.0.147.16:5060[BREAK]
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