asterisk users - Feb 2013 - Variables set by AGI lost in dialplan

Hello,

I am using asterisk 1.8.17.0 with a fast agi written in C

The following is a part of my dialplan

exten => _X.,n,MSet(my_var=0,my_var1=0)
exten => _X.,n,AGI
;; Call to a fast agi to set values of my_var my_var1
exten => _X.,n,Log(NOTICE,"${my_var} ${my_var1}") ;; log the values
to
asterisk messages

Inside the AGI I do some calculations and set the values of my_var and
my_var1 variables like
SET VARIABLE my_var "0.008"
SET VARIABLE my_var1 "0.009"

The problem I am facing is that sometimes the variables are wrongly
received as 0 (zero) in the dialplan even if the AGI has set it to a
non-zero value. Inside the AGI I am logging the values of variables to
a log file, and the log file always shows non-zero values. But in my
asterisk messages file the values are zero for some calls.

This error does not happen for all calls and is not reproducible, it
is random. My asterisk server handles about 100 calls per minute, so
its impossible for me to do an 'agi set debug' and observer the output

Deepesh D ????? 14.02.2013 11:40: 
> My asterisk server
handles about 100 calls per minute, so
> its impossible for me to do an
'agi set debug' and observer the output

You can turn debugging on for
some period of time (until you get an error) and then just look back at
/var/log/asterisk/debug (or whatever is configured in logger.conf) with
less or something. 

No need to look at debugs realtime, besides most of
time it is impossible as you've just said. 

-- 
With Best
Regards
Mikhail Lischuk

 
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are the calls always handled in the same manner, or sometimes different, 
e.g.
with conferencing, bridging, transferring, using local channels and and 
and...?
in that case try to use two underscores before the variablename to use 
inheritance.

maybe you accidentially swap the channels? you could try to set the 
variables with
help of the "shared" function to set it for both channels...

regards,
yves

Am 14.02.2013 10:40, schrieb Deepesh D:
> Hello,
>
> I am using asterisk 1.8.17.0 with a fast agi written in C
>
> The following is a part of my dialplan
>
> exten => _X.,n,MSet(my_var=0,my_var1=0)
> exten => _X.,n,AGI
> ;; Call to a fast agi to set values of my_var my_var1
> exten => _X.,n,Log(NOTICE,"${my_var} ${my_var1}") ;; log the
values to
> asterisk messages
>
> Inside the AGI I do some calculations and set the values of my_var and
> my_var1 variables like
> SET VARIABLE my_var "0.008"
> SET VARIABLE my_var1 "0.009"
>
> The problem I am facing is that sometimes the variables are wrongly
> received as 0 (zero) in the dialplan even if the AGI has set it to a
> non-zero value. Inside the AGI I am logging the values of variables to
> a log file, and the log file always shows non-zero values. But in my
> asterisk messages file the values are zero for some calls.
>
> This error does not happen for all calls and is not reproducible, it
> is random. My asterisk server handles about 100 calls per minute, so
> its impossible for me to do an 'agi set debug' and observer the
output
>
> --
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On Thu, 14 Feb 2013, Deepesh D wrote:
> The problem I am facing is that sometimes the variables are wrongly 
> received as 0 (zero) in the dialplan even if the AGI has set it to a 
> non-zero value.
Are the variables actually set to '0' and not '' (like an
undefined
variable)?
> This error does not happen for all calls and is not reproducible, it is 
> random.
Maybe you are violating the AGI protocol. Are you using an established 
library or did you roll your own?
> My asterisk server handles about 100 calls per minute, so its impossible 
> for me to do an 'agi set debug' and observer the output
That's less than 2 per second, so the output may be voluminous, but not 
impossible.

Without some AGI debugging output it will be difficult to suggest anything 
relevant.

-- 
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards       sedwards at sedwards.com      Voice: +1-760-468-3867 PST
Newline                                              Fax: +1-760-731-3000