Re: [asterisk-users] AGI script exits non-zero when running system command
Thanks for the useful information, I had forgotten about SIGHUP since I usually work with asterisk 1.6. I think however that it would be more acurate to say that the channel is hanging up due to the script crash. I tried moving the command around in the script and it crashes exactly on the system call. Also if I remove the system call it works perfectly. I have a feeling calling the system command is producing the condition to crash the script and hang up the channel. You did remind me of DeadAGI however, and that actually worked. I was using AGI ( again, thanks to asterisk 1.6 experience ) and I forgot asterisk 1.4 is a little more picky. Once I changed to DeadAGI the script worked. I did try adding an ignore handler for SIGHUP but that did not work. It is very strange, but I would say from this experience that it is not wise to use a system call from a script started with AGI() in asterisk 1.4. Thanks for the lead, it helped greatly. On Wed, Feb 2, 2011 at 1:13 PM, Tilghman Lesher wrote: > On Tuesday 01 February 2011 23:43:34 Charles Solar wrote: > > Hey guys I was hoping I could get a few pointers on a problem I have > > been trying to debug for the last couple of months regarding asterisk > > AGI scripts and unexpected termination. > > I have this agi script that accepts incoming faxes using RxFax on the > > latest asterisk 1.4 branch. Its written with perl and it works fine > > except for one line that causes the entire script to terminate > > unexpectedly. > > > AGI Tx >> 200 result=0 > > AGI Rx << VERBOSE "Converting /tmp/1296624119.53.tiff to > > /tmp/1296624119.53.pdf" 1 > > fax.agi: Converting /tmp/1296624119.53.tiff to /tmp/1296624119.53.pdf > > AGI Tx >> 200 result=1 > > Really destroying SIP dialog '371b80c6324ece0c779653c34d2e88a2@XXX' > > Method: INVITE > > == Spawn extension (from-trunk, XX, 3) exited non-zero on > > 'SIP/trunk-0035' > > This isn't the script terminating non-zero. It's the channel hanging up. > > One possible problem might be that your script is not properly handling the > SIGHUP signal sent to the AGI process when a hangup occurs. If that is the > case, then your script may be terminating early due to the signal. The > best way to handle that is to set a signal handler in your script (this is > dependent upon the language you're using), although there's also a > workaround for people who are unwilling or unable to set a signal handler. > > Just remember that prior to Asterisk 1.6.2, once you receive the SIGHUP, > you may no longer interact with the Asterisk process. That includes > setting and retrieving variables and using the VERBOSE command. Starting > with Asterisk 1.6.2, an AGI is free to continue interacting with Asterisk > (the setting of final variables is likely the most productive task). > > -- > Tilghman > > -- > _ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [asterisk-users] AGI script exits non-zero when running system command
On Tuesday 01 February 2011 23:43:34 Charles Solar wrote: > Hey guys I was hoping I could get a few pointers on a problem I have > been trying to debug for the last couple of months regarding asterisk > AGI scripts and unexpected termination. > I have this agi script that accepts incoming faxes using RxFax on the > latest asterisk 1.4 branch. Its written with perl and it works fine > except for one line that causes the entire script to terminate > unexpectedly. > AGI Tx >> 200 result=0 > AGI Rx << VERBOSE "Converting /tmp/1296624119.53.tiff to > /tmp/1296624119.53.pdf" 1 > fax.agi: Converting /tmp/1296624119.53.tiff to /tmp/1296624119.53.pdf > AGI Tx >> 200 result=1 > Really destroying SIP dialog '371b80c6324ece0c779653c34d2e88a2@XXX' > Method: INVITE > == Spawn extension (from-trunk, XX, 3) exited non-zero on > 'SIP/trunk-0035' This isn't the script terminating non-zero. It's the channel hanging up. One possible problem might be that your script is not properly handling the SIGHUP signal sent to the AGI process when a hangup occurs. If that is the case, then your script may be terminating early due to the signal. The best way to handle that is to set a signal handler in your script (this is dependent upon the language you're using), although there's also a workaround for people who are unwilling or unable to set a signal handler. Just remember that prior to Asterisk 1.6.2, once you receive the SIGHUP, you may no longer interact with the Asterisk process. That includes setting and retrieving variables and using the VERBOSE command. Starting with Asterisk 1.6.2, an AGI is free to continue interacting with Asterisk (the setting of final variables is likely the most productive task). -- Tilghman -- _ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
[asterisk-users] AGI script exits non-zero when running system command
Hey guys I was hoping I could get a few pointers on a problem I have been trying to debug for the last couple of months regarding asterisk AGI scripts and unexpected termination. I have this agi script that accepts incoming faxes using RxFax on the latest asterisk 1.4 branch. Its written with perl and it works fine except for one line that causes the entire script to terminate unexpectedly. The script always terminates at the point where I use the 'system' command or backticks to run a system command. Example: system( "/usr/bin/tiff2pdf -f -p letter -o $faxpath/$unique.pdf $faxpath/$unique.tiff" ); The asterisk log with agi debugging on is pasted below I have tried everything I can think of over the past few months, taking a break every so often obviously, but now I feel like I really need outside eyes. Its worth noting that the script runs fine without running the system command, and it does not matter which system command I run. I tried just doing a simple copy of the file and it failed in the same place. Asterisk leaves me with little help, just explaining that the script returned non-zero. Are there any issues I should be aware of when running system commands from an AGI script? I did check permissions and made sure my asterisk user can write to /tmp and use the converting commands. I did a lot more testing of course but that is probably the biggest face-palm error there could be. Asterisk log: -- Launched AGI Script /var/lib/asterisk/agi-bin/fax.agi AGI Tx >> agi_request: fax.agi AGI Tx >> agi_channel: SIP/trunk-0035 AGI Tx >> agi_language: en AGI Tx >> agi_type: SIP AGI Tx >> agi_uniqueid: 1296624119.53 AGI Tx >> agi_callerid: anonymous AGI Tx >> agi_calleridname: Anonymous AGI Tx >> agi_callingpres: 32 AGI Tx >> agi_callingani2: 0 AGI Tx >> agi_callington: 0 AGI Tx >> agi_callingtns: 0 AGI Tx >> agi_dnid: XX AGI Tx >> agi_rdnis: unknown AGI Tx >> agi_context: from-trunk AGI Tx >> agi_extension: XX AGI Tx >> agi_priority: 3 AGI Tx >> agi_enhanced: 0.0 AGI Tx >> agi_accountcode: AGI Tx >> AGI Rx << GET VARIABLE EXTEN AGI Tx >> 200 result=1 (XX) AGI Rx << GET VARIABLE CALLERID(num) AGI Tx >> 200 result=1 (anonymous) AGI Rx << VERBOSE "DEBUG: EXTEN - XX CID - anonymous" 1 fax.agi: DEBUG: EXTEN - XX CID - anonymous AGI Tx >> 200 result=1 AGI Rx << GET VARIABLE UNIQUEID AGI Tx >> 200 result=1 (1296624119.53) AGI Rx << VERBOSE "RxFAX XX: /tmp/1296624119.53.tiff" 1 fax.agi: RxFAX XX: /tmp/1296624119.53.tiff AGI Tx >> 200 result=1 AGI Rx << EXEC RxFAX "/tmp/1296624119.53.tiff" -- AGI Script Executing Application: (RxFAX) Options: (/tmp/1296624119.53.tiff) Really destroying SIP dialog '6327EDB3@XXX' Method: OPTIONS [Feb 1 23:22:18] ERROR[13753]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:214 phase_e_handler: [FaxReceived ERROR] result (13) Unexpected message received. [FaxReceived ERROR] result (13) Unexpected message received. [Feb 1 23:22:18] WARNING[13753]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:478 fax_run: RXFAX: t30_call_active is FALSE. AGI Tx >> 200 result=0 AGI Rx << EXEC RxFAX "/tmp/1296624119.53.tiff" -- AGI Script Executing Application: (RxFAX) Options: (/tmp/1296624119.53.tiff) Really destroying SIP dialog '132f38cb284eef837df0038477511f55@XXX' Method: OPTIONS REGISTER attempt 1 to XX@trunk Really destroying SIP dialog '33dff0b60f7ce29944351e446c2e7b5b@XXX' Method: REGISTER Really destroying SIP dialog 'AE6C429F@XXX' Method: OPTIONS [Feb 1 23:23:17] NOTICE[13753]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:230 phase_d_handler: [RXFAX NEW PAGE]: Channel: SIP/trunk-0035 Pages: -1224970700 Speed: 14400 [Feb 1 23:23:17] NOTICE[13753]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:231 phase_d_handler:Bad rows: 0 - Longest bad row run: 0 - Compression type: T.4 2-D [Feb 1 23:23:17] NOTICE[13753]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:232 phase_d_handler:Image size bytes: 86071 - Image size: 1728 x 2156 - Image resolution: 8031 x 7700 -- [RXFAX NEW PAGE]: Channel: SIP/trunk-0035 Pages: -1224970700 Speed: 14400 [Feb 1 23:23:18] NOTICE[13752]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:230 phase_d_handler: [RXFAX NEW PAGE]: Channel: SIP/trunk-0034 Pages: -1225599608 Speed: 14400 [Feb 1 23:23:18] NOTICE[13752]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:231 phase_d_handler:Bad rows: 0 - Longest bad row run: 0 - Compression type: T.4 2-D [Feb 1 23:23:18] NOTICE[13752]: /usr/src/asterisk/agx-ast-addons/app-spandsp/app_fax.c:232 phase_d_handler:Image size bytes: 86072 - Image size: 1728 x 2156 - Image resolution: 8031 x 7700 -- [RXFAX NEW PAGE]: Channel: SIP/trunk-0034 Pages: -1225599608 Speed: 14400 Really destroying SIP dialog '439a2cca2a745a565a4e0aab56a054b8@XXX' Method: OPTIONS Really destroying SIP dialog '49515A3F@XXX' Method:
