asterisk users - Aug 2006 - Festival through AGI can't handle strings longer than 15 chars

I'm having a tough problem when using Festival with Asterisk through 
AGI: it seems that when I pass more than 15 chars to the Festival 
command, when from inside an AGI, no sounds (speech) at all is generated.

The following (from inside the dialplan) correctly works:

  exten => 333,1,Answer()
  exten => 333,2,FESTIVAL(Telefono spento uno)
  exten => 333,3,Hangup

But, when moved from within an AGI, the same Festival command doesn't work:

  EXEC FESTIVAL "Telefono spento uno"

the symptom is that no text is played, although the return code from 
command is zero.

One important note: if I shorten the text to "Telefono spento" (i.e.
at
most 15-chars wide) everything works as expected.

I really can't figure out the reason of this weird behavior. What I can 
do is to exclude some possible reasons:

1. It is not a festival-related problem since when called from the 
Dialplan everything works as expected.
2. It is not a language-related issue, since I tried this both with 
English and Italian
3. It is not a missing call to flush()... yes, I added a flush() at the 
end of my Python-based AGI call
4. It is not a problem related to Python, since I use Python extensively 
with AGI

Does anyone have a hint on what I can do to investigate or solve this 
problem? Does enyone know if this is a known bug?

Thanks in advance,

Mario

Hi Mario. Have you tried to enable AGI debug?

CLI> agi debug

That will show what Asterisk is receiving from your script.

Also enable all the debug messages in  the logger.conf file for the console

Go and try that and post what you see here, and we may be able to help you

On 8/17/06, Mario <mgnospam@fgasoftware.com>
wrote:
> I'm having a tough problem when using Festival with Asterisk through
> AGI: it seems that when I pass more than 15 chars to the Festival
> command, when from inside an AGI, no sounds (speech) at all is generated.
>
> The following (from inside the dialplan) correctly works:
>
>   exten => 333,1,Answer()
>   exten => 333,2,FESTIVAL(Telefono spento uno)
>   exten => 333,3,Hangup
>
> But, when moved from within an AGI, the same Festival command doesn't
work:
>
>   EXEC FESTIVAL "Telefono spento uno"
>
> the symptom is that no text is played, although the return code from
> command is zero.
>
> One important note: if I shorten the text to "Telefono spento"
(i.e. at
> most 15-chars wide) everything works as expected.
>
> I really can't figure out the reason of this weird behavior. What I can
> do is to exclude some possible reasons:
>
> 1. It is not a festival-related problem since when called from the
> Dialplan everything works as expected.
> 2. It is not a language-related issue, since I tried this both with
> English and Italian
> 3. It is not a missing call to flush()... yes, I added a flush() at the
> end of my Python-based AGI call
> 4. It is not a problem related to Python, since I use Python extensively
> with AGI
>
> Does anyone have a hint on what I can do to investigate or solve this
> problem? Does enyone know if this is a known bug?
>
> Thanks in advance,
>
> Mario
>
>
>
>
> _______________________________________________
> --Bandwidth and Colocation provided by Easynews.com --
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
>

-- 
"Su nombre es GNU/Linux, no solamente Linux, mas info en
http://www.gnu.org"

Moises,

follow on and you'll find the exact output that I got from Asterisk once 
I raised the more detailed debug level as you suggested. I'm sorry, 
that's quite a long text, but at least I'm sure you have all the info 
available.

However, I now have SOME IMPORTANT notes to add:

1. I'm running Asterisk 1.2.9.1
2. Once I restarted the server, everything worked fine. Thus, it seems 
that the problem could be solved by just restarting the server. 
However... read on.
3. Once restarted the server I changed the text inside my Python AGI and 
the error appeared again.

My CONCLUSION: the error doesn't probably depend on Festival or Exec 
command. To make the error occur, I simply do this:
a) I restart server
b) I run the AGI script with whatever text (as wide as I wish) and it 
will work
c) I shorten the text... it still will work
d) I then widen again the text: now it won't work! It will work only as 
long as I shorten the text (or leave it the same length), but not if I 
widen it.

I suspect that there is some malloc()ed area (I can't  imagine in which 
C module) that gets successfully narrowed based on the AGI passed text, 
but never gets enlarged unless the server restarts... Does it seems 
reasonable? Hope it helps.

Note: this is my 2nd reply. Since I didn't see my 1st reply in the 
newsgroup, I'm now omitting the console log since it is probably useless 
once I understood the cause of the problem (what I'm missing is how to 
fix it). I suspect that because there was too much text, my whole reply 
has been discarded.


Moises Silva wrote:
> One step more, enable the following in logger.conf
>
> console => notice,warning,error,debug,verbose
>
> Application app_festival has some interesting debug messages like:
>
> ast_log(LOG_DEBUG, "Text passed to festival server : %s\n",(char
*)data);
>
> and that shows in the console the exact test is passed to the festival 
> server.
>
> I keep looking into the code trying to find the reason of the
> behaviour you describe but I havent succed so far.
>
> Please report any feedback.
>
> Regards
>
> On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> Thanks for your help, Moises.
>>
>> I did activate the AGI DEBUG as you suggested (thanks for that!).
>> However, I'm now only a little bit more sure that I'm passing
the right
>> stuff to the Festival command. Following you'll see what I'm
passing for
>> the "short text" (shorter than 15 chars) and for the wider
text.
>>
>> As you can see, both the calls seem to work, but for the 2nd I do not
>> hear any sound.
>>
>> At this point, any idea is really welcome. Thanks for your help.
>>
>> *** Short text ***
>>
>> AGI Rx << ANSWER
>> AGI Tx >> 200 result=0
>> AGI Rx << EXEC FESTIVAL "Telefono spento"
>>     -- AGI Script Executing Application: (FESTIVAL) Options: (Telefono
>> spento)
>>   == Parsing '/etc/asterisk/festival.conf': Found
>> AGI Tx >> 200 result=0
>>     -- AGI Script test_command.py completed, returning 0
>>   == Auto fallthrough, channel 'SIP/1-9803' status is
'UNKNOWN'
>>
>> *** Longer text ***
>>
>> AGI Rx << ANSWER
>> AGI Tx >> 200 result=0
>> AGI Rx << EXEC FESTIVAL "Telefono utente spento"
>>     -- AGI Script Executing Application: (FESTIVAL) Options: (Telefono
>> utente spento)
>>   == Parsing '/etc/asterisk/festival.conf': Found
>> AGI Tx >> 200 result=0
>>     -- AGI Script test_command.py completed, returning 0
>>   == Auto fallthrough, channel 'SIP/1-67c2' status is
'UNKNOWN'
>>
>>
>>
>> Moises Silva wrote:
>> > Hi Mario. Have you tried to enable AGI debug?
>> >
>> > CLI> agi debug
>> >
>> > That will show what Asterisk is receiving from your script.
>> >
>> > Also enable all the debug messages in  the logger.conf file for
the
>> > console
>> >
>> > Go and try that and post what you see here, and we may be able to
help
>> > you
>> >
>> > On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> >> I'm having a tough problem when using Festival with
Asterisk through
>> >> AGI: it seems that when I pass more than 15 chars to the
Festival
>> >> command, when from inside an AGI, no sounds (speech) at all is
>> >> generated.
>> >>
>> >> The following (from inside the dialplan) correctly works:
>> >>
>> >>   exten => 333,1,Answer()
>> >>   exten => 333,2,FESTIVAL(Telefono spento uno)
>> >>   exten => 333,3,Hangup
>> >>
>> >> But, when moved from within an AGI, the same Festival command
doesn't
>> >> work:
>> >>
>> >>   EXEC FESTIVAL "Telefono spento uno"
>> >>
>> >> the symptom is that no text is played, although the return
code from
>> >> command is zero.
>> >>
>> >> One important note: if I shorten the text to "Telefono
spento"
>> (i.e. at
>> >> most 15-chars wide) everything works as expected.
>> >>
>> >> I really can't figure out the reason of this weird
behavior. What
>> I can
>> >> do is to exclude some possible reasons:
>> >>
>> >> 1. It is not a festival-related problem since when called from
the
>> >> Dialplan everything works as expected.
>> >> 2. It is not a language-related issue, since I tried this both
with
>> >> English and Italian
>> >> 3. It is not a missing call to flush()... yes, I added a
flush()
>> at the
>> >> end of my Python-based AGI call
>> >> 4. It is not a problem related to Python, since I use Python 
>> extensively
>> >> with AGI
>> >>
>> >> Does anyone have a hint on what I can do to investigate or
solve this
>> >> problem? Does enyone know if this is a known bug?
>> >>
>> >> Thanks in advance,
>> >>
>> >> Mario
>> >>
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> --Bandwidth and Colocation provided by Easynews.com --
>> >>
>> >> asterisk-users mailing list
>> >> To UNSUBSCRIBE or update options visit:
>> >>    http://lists.digium.com/mailman/listinfo/asterisk-users
>> >>
>> >
>> >
>>
>>
>
>

Moises,

sorry to bother you again.

I did some wrong posting to the newsgroup and that's the reason of my 
(apparent) delay in answering to your latest question. You can now find 
the answer in the newsgroup.

Please, any idea as to the possible cause? If this is a bug (as it seems 
to me) I'd be glad to try to fix it... but, can you give me a hint to 
which possible C modules I should look? Just to understand if this is a 
problem strictly  related to Festival or both to Festival and AGI.

For your convenience, I report here the important part of my previous post:

My CONCLUSION: the error doesn't probably depend on Festival or Exec 
command. To make the error occur, I simply do this:
a) I restart server
b) I run the AGI script with whatever text (as wide as I wish) and it 
will work
c) I shorten the text... it still will work
d) I then widen again the text: now it won't work! It will work only as 
long as I shorten the text (or leave it the same length), but not if I 
widen it.

Thanks once more for your support.

Mario.


Moises Silva wrote:
> One step more, enable the following in logger.conf
>
> console => notice,warning,error,debug,verbose
>
> Application app_festival has some interesting debug messages like:
>
> ast_log(LOG_DEBUG, "Text passed to festival server : %s\n",(char
*)data);
>
> and that shows in the console the exact test is passed to the festival 
> server.
>
> I keep looking into the code trying to find the reason of the
> behaviour you describe but I havent succed so far.
>
> Please report any feedback.
>
> Regards
>
> On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> Thanks for your help, Moises.
>>
>> I did activate the AGI DEBUG as you suggested (thanks for that!).
>> However, I'm now only a little bit more sure that I'm passing
the right
>> stuff to the Festival command. Following you'll see what I'm
passing for
>> the "short text" (shorter than 15 chars) and for the wider
text.
>>
>> As you can see, both the calls seem to work, but for the 2nd I do not
>> hear any sound.
>>
>> At this point, any idea is really welcome. Thanks for your help.
>>
>> *** Short text ***
>>
>> AGI Rx << ANSWER
>> AGI Tx >> 200 result=0
>> AGI Rx << EXEC FESTIVAL "Telefono spento"
>>     -- AGI Script Executing Application: (FESTIVAL) Options: (Telefono
>> spento)
>>   == Parsing '/etc/asterisk/festival.conf': Found
>> AGI Tx >> 200 result=0
>>     -- AGI Script test_command.py completed, returning 0
>>   == Auto fallthrough, channel 'SIP/1-9803' status is
'UNKNOWN'
>>
>> *** Longer text ***
>>
>> AGI Rx << ANSWER
>> AGI Tx >> 200 result=0
>> AGI Rx << EXEC FESTIVAL "Telefono utente spento"
>>     -- AGI Script Executing Application: (FESTIVAL) Options: (Telefono
>> utente spento)
>>   == Parsing '/etc/asterisk/festival.conf': Found
>> AGI Tx >> 200 result=0
>>     -- AGI Script test_command.py completed, returning 0
>>   == Auto fallthrough, channel 'SIP/1-67c2' status is
'UNKNOWN'
>>
>>
>>
>> Moises Silva wrote:
>> > Hi Mario. Have you tried to enable AGI debug?
>> >
>> > CLI> agi debug
>> >
>> > That will show what Asterisk is receiving from your script.
>> >
>> > Also enable all the debug messages in  the logger.conf file for
the
>> > console
>> >
>> > Go and try that and post what you see here, and we may be able to
help
>> > you
>> >
>> > On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> >> I'm having a tough problem when using Festival with
Asterisk through
>> >> AGI: it seems that when I pass more than 15 chars to the
Festival
>> >> command, when from inside an AGI, no sounds (speech) at all is
>> >> generated.
>> >>
>> >> The following (from inside the dialplan) correctly works:
>> >>
>> >>   exten => 333,1,Answer()
>> >>   exten => 333,2,FESTIVAL(Telefono spento uno)
>> >>   exten => 333,3,Hangup
>> >>
>> >> But, when moved from within an AGI, the same Festival command
doesn't
>> >> work:
>> >>
>> >>   EXEC FESTIVAL "Telefono spento uno"
>> >>
>> >> the symptom is that no text is played, although the return
code from
>> >> command is zero.
>> >>
>> >> One important note: if I shorten the text to "Telefono
spento"
>> (i.e. at
>> >> most 15-chars wide) everything works as expected.
>> >>
>> >> I really can't figure out the reason of this weird
behavior. What
>> I can
>> >> do is to exclude some possible reasons:
>> >>
>> >> 1. It is not a festival-related problem since when called from
the
>> >> Dialplan everything works as expected.
>> >> 2. It is not a language-related issue, since I tried this both
with
>> >> English and Italian
>> >> 3. It is not a missing call to flush()... yes, I added a
flush()
>> at the
>> >> end of my Python-based AGI call
>> >> 4. It is not a problem related to Python, since I use Python 
>> extensively
>> >> with AGI
>> >>
>> >> Does anyone have a hint on what I can do to investigate or
solve this
>> >> problem? Does enyone know if this is a known bug?
>> >>
>> >> Thanks in advance,
>> >>
>> >> Mario
>> >>
>> >>
>> >>
>> >>
>> >> _______________________________________________
>> >> --Bandwidth and Colocation provided by Easynews.com --
>> >>
>> >> asterisk-users mailing list
>> >> To UNSUBSCRIBE or update options visit:
>> >>    http://lists.digium.com/mailman/listinfo/asterisk-users
>> >>
>> >
>> >
>>
>>
>
>

Thanks, Moises.

I'll take a look at the code following your suggestion. Then, if 
successful, I surely post back the (possible) solution on this thread.



Moises Silva wrote:
> Hi Mario, Im sorry to answer so late, but i have been busy. In fact I
> give a read in the code  trying to find the error. You can start
> looking at source in
> res/res_agi.c function handle_exec() this function receives the AGI
> request of EXEC and then call internal function pbx_exec() found in
> pbx.c, after that, control passes to apps/app_festival.c function
> festival_exec(), so the final trace would look something like this:
>
> handle_exec() in res/res_agi.c
> pbx_exec() in pbx.c
> festival_exec() in apps/app_festival.c
>
> Good Look, if you found the problem please report back the results :)
>
> Regards
>
>
>
> On 8/19/06, Mario <mgnospam@fgasoftware.com> wrote:
>> Moises,
>>
>> sorry to bother you again.
>>
>> I did some wrong posting to the newsgroup and that's the reason of
my
>> (apparent) delay in answering to your latest question. You can now find
>> the answer in the newsgroup.
>>
>> Please, any idea as to the possible cause? If this is a bug (as it
seems
>> to me) I'd be glad to try to fix it... but, can you give me a hint
to
>> which possible C modules I should look? Just to understand if this is a
>> problem strictly  related to Festival or both to Festival and AGI.
>>
>> For your convenience, I report here the important part of my previous 
>> post:
>>
>> My CONCLUSION: the error doesn't probably depend on Festival or
Exec
>> command. To make the error occur, I simply do this:
>> a) I restart server
>> b) I run the AGI script with whatever text (as wide as I wish) and it
>> will work
>> c) I shorten the text... it still will work
>> d) I then widen again the text: now it won't work! It will work
only as
>> long as I shorten the text (or leave it the same length), but not if I
>> widen it.
>>
>> Thanks once more for your support.
>>
>> Mario.
>>
>>
>> Moises Silva wrote:
>> > One step more, enable the following in logger.conf
>> >
>> > console => notice,warning,error,debug,verbose
>> >
>> > Application app_festival has some interesting debug messages like:
>> >
>> > ast_log(LOG_DEBUG, "Text passed to festival server :
%s\n",(char
>> *)data);
>> >
>> > and that shows in the console the exact test is passed to the
festival
>> > server.
>> >
>> > I keep looking into the code trying to find the reason of the
>> > behaviour you describe but I havent succed so far.
>> >
>> > Please report any feedback.
>> >
>> > Regards
>> >
>> > On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> >> Thanks for your help, Moises.
>> >>
>> >> I did activate the AGI DEBUG as you suggested (thanks for
that!).
>> >> However, I'm now only a little bit more sure that I'm
passing the
>> right
>> >> stuff to the Festival command. Following you'll see what
I'm
>> passing for
>> >> the "short text" (shorter than 15 chars) and for the
wider text.
>> >>
>> >> As you can see, both the calls seem to work, but for the 2nd I
do not
>> >> hear any sound.
>> >>
>> >> At this point, any idea is really welcome. Thanks for your
help.
>> >>
>> >> *** Short text ***
>> >>
>> >> AGI Rx << ANSWER
>> >> AGI Tx >> 200 result=0
>> >> AGI Rx << EXEC FESTIVAL "Telefono spento"
>> >>     -- AGI Script Executing Application: (FESTIVAL) Options: 
>> (Telefono
>> >> spento)
>> >>   == Parsing '/etc/asterisk/festival.conf': Found
>> >> AGI Tx >> 200 result=0
>> >>     -- AGI Script test_command.py completed, returning 0
>> >>   == Auto fallthrough, channel 'SIP/1-9803' status is
'UNKNOWN'
>> >>
>> >> *** Longer text ***
>> >>
>> >> AGI Rx << ANSWER
>> >> AGI Tx >> 200 result=0
>> >> AGI Rx << EXEC FESTIVAL "Telefono utente
spento"
>> >>     -- AGI Script Executing Application: (FESTIVAL) Options: 
>> (Telefono
>> >> utente spento)
>> >>   == Parsing '/etc/asterisk/festival.conf': Found
>> >> AGI Tx >> 200 result=0
>> >>     -- AGI Script test_command.py completed, returning 0
>> >>   == Auto fallthrough, channel 'SIP/1-67c2' status is
'UNKNOWN'
>> >>
>> >>
>> >>
>> >> Moises Silva wrote:
>> >> > Hi Mario. Have you tried to enable AGI debug?
>> >> >
>> >> > CLI> agi debug
>> >> >
>> >> > That will show what Asterisk is receiving from your
script.
>> >> >
>> >> > Also enable all the debug messages in  the logger.conf
file for the
>> >> > console
>> >> >
>> >> > Go and try that and post what you see here, and we may be
able
>> to help
>> >> > you
>> >> >
>> >> > On 8/17/06, Mario <mgnospam@fgasoftware.com> wrote:
>> >> >> I'm having a tough problem when using Festival
with Asterisk
>> through
>> >> >> AGI: it seems that when I pass more than 15 chars to
the Festival
>> >> >> command, when from inside an AGI, no sounds (speech)
at all is
>> >> >> generated.
>> >> >>
>> >> >> The following (from inside the dialplan) correctly
works:
>> >> >>
>> >> >>   exten => 333,1,Answer()
>> >> >>   exten => 333,2,FESTIVAL(Telefono spento uno)
>> >> >>   exten => 333,3,Hangup
>> >> >>
>> >> >> But, when moved from within an AGI, the same Festival
command
>> doesn't
>> >> >> work:
>> >> >>
>> >> >>   EXEC FESTIVAL "Telefono spento uno"
>> >> >>
>> >> >> the symptom is that no text is played, although the
return code
>> from
>> >> >> command is zero.
>> >> >>
>> >> >> One important note: if I shorten the text to
"Telefono spento"
>> >> (i.e. at
>> >> >> most 15-chars wide) everything works as expected.
>> >> >>
>> >> >> I really can't figure out the reason of this
weird behavior. What
>> >> I can
>> >> >> do is to exclude some possible reasons:
>> >> >>
>> >> >> 1. It is not a festival-related problem since when
called from the
>> >> >> Dialplan everything works as expected.
>> >> >> 2. It is not a language-related issue, since I tried
this both
>> with
>> >> >> English and Italian
>> >> >> 3. It is not a missing call to flush()... yes, I
added a flush()
>> >> at the
>> >> >> end of my Python-based AGI call
>> >> >> 4. It is not a problem related to Python, since I use
Python
>> >> extensively
>> >> >> with AGI
>> >> >>
>> >> >> Does anyone have a hint on what I can do to
investigate or
>> solve this
>> >> >> problem? Does enyone know if this is a known bug?
>> >> >>
>> >> >> Thanks in advance,
>> >> >>
>> >> >> Mario
>> >> >>
>> >> >>
>> >> >>
>> >> >>
>> >> >> _______________________________________________
>> >> >> --Bandwidth and Colocation provided by Easynews.com
--
>> >> >>
>> >> >> asterisk-users mailing list
>> >> >> To UNSUBSCRIBE or update options visit:
>> >> >>   
http://lists.digium.com/mailman/listinfo/asterisk-users
>> >> >>
>> >> >
>> >> >
>> >>
>> >>
>> >
>> >
>>
>>
>
>