January 2016
Intermediate to advanced
384 pages
8h 6m
English
book
Building Telephony Systems with OpenSIPS - Second Edition
by Flavio E. Goncalves, Flavio E Goncalves, Bogdan-Andrei Iancu
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Debugging the routing script
To better test and debug the routing script, we will use the xlog() function as a way to insert debugging and informational messages in our script:
loadmodule "xlog.so"
xlog("L_ERR","Marker 480 ruri=<$ru>");You can check the latest XLOG messages with the following command:
tail /var/log/syslog
The t_on_failure() function tells OpenSIPS to handle the SIP failure (negative/unsuccessful replies) conditions. Failure conditions in this context are error messages of codes, 4XX and 5XX. When you call t_on_failure() just before calling the t_relay() function, you will tell OpenSIPS to transfer the control to failure_route[missed_call] when a failure message is detected:
Note
IMPORTANT: OpenSIPS does not execute the failure route ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.