Steve Edwards <asterisk....@sedwards.com> wrote:
> >> On Wed, 21 Oct 2009, Steve Edwards wrote:
> >>
> >>> I'd take a look at using AGIs written in C. They make nice little
> >>> building blocks. They execute very quickly and can cleanup your
> >>> dialplan.
> >>
> >> And you can debug them (AGIs in any language) from the command line
> >> completely outside of Asterisk.
>
> On Wed, 21 Oct 2009, cov...@ccs.covici.com wrote:
>
> > OK, are there include files available for the appropriate functionality?
> > Sounds like it might be very nice.
>
> If you're referring to "debugging outside of Asterisk," it's dead obvious
> -- once you know the "secret."
>
> The AGI protocol is just communications over STDIN and STDOUT in a
> specific format.
>
> Thus, running outside of Asterisk just means feeding the right stuff going
> in and observing the right stuff coming out.
>
> For example:
>
> ./block-ani <dummy-input-for-block-ani
>
> where dummy-input-for-block-ani contains:
>
> agi_accountcode:
> agi_callerid: 1234567890
> agi_calleridname: sedwards
> agi_callingani2: 0
> agi_callingpres: 0
> agi_callingtns: 0
> agi_callington: 0
> agi_channel: SIP/201-09456478
> agi_context: newline
> agi_dnid: *
> agi_enhanced: 0.0
> agi_extension: *
> agi_language: en
> agi_priority: 1
> agi_rdnis: unknown
> agi_request: block-ani
> agi_type: SIP
> agi_uniqueid: 1195070681.28
>
> 200 result=1 (5555551212)
> 200 result=1 (localhost)
> 200 result=1 (example)
> 200 result=1 (example)
> 200 result=1 (example)
>
> The first "block" is the standard AGI environment. The second block is
> specific to this AGI and supplies the answers to the AGI requests "GET
> VARIABLE ANI, "GET VARIABLE DATABASE-SERVER," "GET DATABASE-DATABASE,"
> "GET DATABASE-USERNAME," and "GET DATABASE PASSWORD."
>
> I prefer to use an executable script so I can include comments. The script
> looks like:
>
> # agi-environment.sh
>
> # the standard AGI environment variables
> echo "agi_accountcode: "
> echo "agi_callerid: 1234567890"
> echo "agi_calleridname: sedwards"
> echo "agi_callingani2: 0"
> echo "agi_callingpres: 0"
> echo "agi_callingtns: 0"
> echo "agi_callington: 0"
> echo "agi_channel: SIP/201-09456478"
> echo "agi_context: newline"
> echo "agi_dnid: *"
> echo "agi_enhanced: 0.0"
> echo "agi_extension: *"
> echo "agi_language: en"
> echo "agi_priority: 1"
> echo "agi_rdnis: unknown"
> echo "agi_request: block-ani"
> echo "agi_type: SIP"
> echo "agi_uniqueid: 1195070681.28"
> echo ""
>
> # cruft specific to my AGI
>
> # AGI Rx << GET VARIABLE "ANI"
> echo "200 result=1 (5555551212)"
> # AGI Rx << GET VARIABLE "DATABASE-SERVER"
> echo "200 result=1 (localhost)"
> # AGI Rx << GET VARIABLE "DATABASE-DATABASE"
> echo "200 result=1 (example)"
> # AGI Rx << GET VARIABLE "DATABASE-USERNAME"
> echo "200 result=1 (example)"
> # AGI Rx << GET VARIABLE "DATABASE-PASSWORD"
> echo "200 result=1 (example)"
>
> # (end of agi-environment.sh)
>
> And you use it like:
>
> ./agi-environment.sh | ./block-ani
>
> or
>
> ./agi-environment.sh >dummy-input-for-block-ani
> ./block-ani <dummy-input-for-block-ani
>
> Since I'm an "old-school" C programmer, I use emacs as my editor. I fire
> up gdb (the GNU C (amongst other languages) debugger) in a window, give it
> a command like "b main; r <dummy-input-for-block-ani" and I can step
> through my program line by line, examining and changing variables at will.
>
> Beats the hell out of peppering your code with prints/puts/echos and
> crossing your fingers.
>
> --
> Thanks in advance,
> -------------------------------------------------------------------------
> Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST
> Newline Fax: +1-760-731-3000
>
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OK, but how do write the C program -- the Perl and php agis have defined
functions for the agi commands, how do you do this in c?
--
Your life is like a penny. You're going to lose it. The question is:
How do
you spend it?
John Covici
cov...@ccs.covici.com
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