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[gregt at cgicommunicat...]

Hi, does anyone have an example of a simple PHP socket script that will listen and spawn of a process that handles the incoming call?

I understand the inbound socket and code such as this
http://wiki.freeswitch.org/wiki/PHP_Event_Socket
that will let me initiate operations. It's the constantly running php socket program that I can't get my head around, and how it will spawn another php script that will be able to do things like answer the session, get dtmf, etc.

--
Greg



On Aug 2, 2009, at 6:35 PM, Michael Collins wrote:

[william.suffill at gma...]

I wrote some notes on this but have yet to wiki it.

example of an outbound socket connection where the call is answered, a
variable is set then perhaps play one of the pre-installed files and
hangup.
ivrd

fs_ivrd comes with freeswitch. It being a small daemon just invokes
the script defined in a variable and passes data from it via STDIN/OUT

Since this is an outbound socket connections it needs to be defined in
the dialplan.



Ex:

<extension name="outbound-socket">

<condition field="destination_number" expression="^55(522)$">

<action application="set"
data="ivr_path=/usr/local/freeswitch/scripts/ivrd-demo.php"/>

<action application="socket" data="127.0.0.1:8084 async full"/>

</condition>

</extension>



The above dialplan sample would invoke ivr-demo.php when 55522 is
called as long as fs_ivrd is running. To start fs_ivrd:

/usr/local/freeswitch/bin/fs_ivrd -h 127.0.0.1 -p 8004



It takes 2 arguments -h for hostname and -p for port.



PHP Code

#!/usr/bin/php -q

<?php



// set a couple of things so we dont kill the system

ob_implicit_flush(true);

set_time_limit(30);





// Open stdin so we can read the AGI data in

$in = fopen("php://stdin", "r");

// Connect

echo "connect\n\n";

// Answer

echo "sendmsg\n";

echo "call-command: execute\n";

echo "execute-app-name: answer\n\n";



// Play a prompt

echo "sendmsg\n";

echo "call-command: execute\n";

echo "execute-app-name: playback\n";

echo "execute-app-arg:
/usr/local/freeswitch/sounds/en/us/callie/ivr/8000/ivr-welcome_to_freeswitch.wav\n\n";



// Wait

sleep(5);



// Hangup

echo "sendmsg\n";

echo "call-command: hangup\n\n";



fclose($in);



?>



ivrd will call this script for each call. All itdoes is answer the
channel tell FreeSWITCH to play the “welcome to freeswitch” prompt.
Since the script is now controlling all call flow I needed to add a
wait or it would send the hangup immediately before the prompt was
played.

Some improvements possible but that's 1 way to do it. It would be
possible to do the socket directly in PHP but fs_ivrd is a nice option
too.

-- W

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[gregt at cgicommunicat...]

Thanks so much, William. This gives me a great start.

--
Greg





On Aug 4, 2009, at 7:04 PM, William Suffill wrote:

[mike at jerris.com]

there is some other info on http://wiki.freeswitch.org/wiki/Perl_esl
about this as well. could somone try to put together some decent docs
on fs_ivrd on the wiki as I keep getting asked this stuff privately as
well.

Mike

On Aug 4, 2009, at 7:04 PM, William Suffill wrote:

[william.suffill at gma...]

I'll see what I can do. Got a few sections of the PHP ESL to finish
but should be able to
write up fs_ivrd as well.

-- W

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