Re: [asterisk-users] AGI Script Returning 4

[Steve Edwards]

On 1/30/21 1:18 PM, Alexander Perkins wrote:

the PHP-AGI script fails after it is executed and simply returns 
'returning 4'.


On Sat, 30 Jan 2021, Michal Rybarik wrote:

I think this can happen by hanging up the call by one party, when SIGHUP 
is sent to AGI script. PHP will exit on SIGHUP. It can be resolved by 
initializing signal handler in PHP script (pcntl_signal) for SIGHUP and 
doing nothing in it (return).


From res_agi.c:

enum agi_result {
AGI_RESULT_FAILURE = -1,
AGI_RESULT_SUCCESS,
AGI_RESULT_SUCCESS_FAST,
AGI_RESULT_SUCCESS_ASYNC,
AGI_RESULT_NOTFOUND,
AGI_RESULT_HANGUP,
};

so, AGI_RESULT_HANGUP == 4.

When Asterisk detects the hangup on the channel, it sends a SIGHUP to your 
AGI.


I always set a signal handler on SIGHUP and do what makes sense to my 
application: maybe some cleanup or syslog() before return() or exit(). 
Almost always exit().


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Thanks in advance,
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Steve Edwards   sedwa...@sedwards.com  Voice: +1-760-468-3867 PST
https://www.linkedin.com/in/steve-edwards-4244281

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Re: [asterisk-users] AGI Script Returning 4

[Michal Rybarik]

Dňa 30. 1. 2021 o 20:18 Alexander Perkins napísal(a):
> HI All.  I have a really strange issue that I'm two months into
> troubleshooting; however, I cannot figure it out.  I have an AGI
> Script (PHP) that runs every time a call comes into my Asterisk box. 
> Most of the time, it runs without any issue.  However, every now and
> then, the PHP-AGI script fails after it is executed and simply returns
> 'returning 4'.  I verify the PHP script begins to run.  However, it
> appears to just stop.  I have placed try/catch statements everywhere,
> but it does not seem to hit them.  
>
> Just to verify, this is the same script running over and over with the
> same parameter.  
>
> Any ideas/suggestions as of what can be happening?


I think this can happen by hanging up the call by one party, when SIGHUP
is sent to AGI script. PHP will exit on SIGHUP. It can be resolved by
initializing signal handler in PHP script (pcntl_signal) for SIGHUP and
doing nothing in it (return).

-- 
Regards,
Michal Rybarik


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Re: [asterisk-users] AGI Script Returning 4

[Jeff LaCoursiere]

Out of RAM/swap?

j

On 1/30/21 1:18 PM, Alexander Perkins wrote:
HI All.  I have a really strange issue that I'm two months into 
troubleshooting; however, I cannot figure it out.  I have an AGI 
Script (PHP) that runs every time a call comes into my Asterisk box.  
Most of the time, it runs without any issue. However, every now and 
then, the PHP-AGI script fails after it is executed and simply returns 
'returning 4'.  I verify the PHP script begins to run.  However, it 
appears to just stop.  I have placed try/catch statements everywhere, 
but it does not seem to hit them.


Just to verify, this is the same script running over and over with the 
same parameter.


Any ideas/suggestions as of what can be happening?

Thanks,
Alex



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Phone:  *+1 703.496.4990 x108*
Mobile: *+1 815.546.6599*
Email:  *j...@stratustalk.com* 
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Reston, VA 20190*

 
 




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[asterisk-users] AGI Script Returning 4

[Alexander Perkins]

HI All.  I have a really strange issue that I'm two months into
troubleshooting; however, I cannot figure it out.  I have an AGI Script
(PHP) that runs every time a call comes into my Asterisk box.  Most of the
time, it runs without any issue.  However, every now and then, the PHP-AGI
script fails after it is executed and simply returns 'returning 4'.  I
verify the PHP script begins to run.  However, it appears to just stop.  I
have placed try/catch statements everywhere, but it does not seem to hit
them.

Just to verify, this is the same script running over and over with the same
parameter.

Any ideas/suggestions as of what can be happening?

Thanks,
Alex
-- 
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