[Freeswitch-users] Server Disconnected when SIGINT occured

[lakshmanan ganapathy]

Here is the result

Program:
require ESL;
use IO::Socket::INET;
use Data::Dumper;

my $ip = "192.168.1.222";
my $sock = new IO::Socket::INET ( LocalHost => $ip,  LocalPort => '8447',
Proto => 'tcp',  Listen => 1,  Reuse => 1 );
die "Could not create socket: $!\n" unless $sock;


for(;;) {
    my $new_sock = $sock->accept();
    next if (not defined ($new_sock));
    my $pid = fork();
    if ($pid) {
        close($new_sock);
        next;
    }
    print "CHILD PID: $$\n";
    &register_Signals_Child();
    sub register_Signals_Child() {
        foreach ( keys %SIG ) {
            $SIG{$_} = 'Handler';
        }
    }

    sub Handler() {
        my $handle=$_[0];
        if($handle eq "INT") {
            print "CHILD $$: SIGNAL SIG$handle is generated\n";
        }
        else
        {
            print "CHILD $$: Received $handle\n";
        }
    }
    my $host = $new_sock->sockhost();
    my $fd = fileno($new_sock);

    my $con = new ESL::ESLconnection($fd);
    my $info = $con->getInfo();

    my $uuid = $info->getHeader("unique-id");

    printf "Connected call %s, from %s\n", $uuid,
$info->getHeader("caller-caller-id-number");
    my $r=$con->execute("answer");
    print Dumper $r;
    $con->events("plain","all");
    my
$re=$con->execute("playback","/usr/local/freeswitch1/sounds/en/us/callie/ivr/8000/ivr-welcome_to_freeswitch.wav");
    while($con->connected()) {
        my $e = $con->recvEvent();

        if ($e) {
            my $name = $e->getHeader("event-name");
            print "EVENT [$name]\n";
            if ($name eq "DTMF") {
                my $digit = $e->getHeader("dtmf-digit");
                print "$digit\n";
            }
        }
    }
    close($new_sock);
}

I executed the program and the following things were printed

CHILD PID: 6778
Connected call e0d1001a-03f4-11df-b002-db488337e0ea, from 1001
$VAR1 = 0;
EVENT [CHANNEL_EXECUTE]
EVENT [CHANNEL_ANSWER]
EVENT [CHANNEL_EXECUTE_COMPLETE]
EVENT [COMMAND]
EVENT [CHANNEL_EXECUTE]
EVENT [HEARTBEAT]
EVENT [RE_SCHEDULE]
EVENT [CHANNEL_EXECUTE_COMPLETE]

Then from another shell I executed kill -2 6778, the result is follows
CHILD 6778: SIGNAL SIGINT is generated
EVENT [SERVER_DISCONNECTED]

But the child process is still running as expected.
But  I don't know why I received SERVER_DISCONNECTED from freeswitch???





On Thu, Jan 14, 2010 at 1:27 PM, lakshmanan ganapathy
<lakindia89 at gmail.com>wrote:

> I taught the signal handler will be inherited by the child process. It also
> does like that.
> After making a call, If I press ctrl + c, the above program printed
> PARENT PID: Signal SIGINT is generated
> CHILD PID: Signal SIGINT is generated.
>
> So I think the sigal handlers will be inherited to the child.
> Anyway I'll also try registering signal handlers in child also, and then
> I'll come back with that result.
>
> Thanks....
> On Wed, Jan 13, 2010 at 9:48 PM, Anthony Minessale <
> anthony.minessale at gmail.com> wrote:
>
>> you would have to register signals in your child process too
>>
>>   On Wed, Jan 13, 2010 at 3:13 AM, lakshmanan ganapathy <
>> lakindia89 at gmail.com> wrote:
>>
>>>  Hi all,
>>>
>>> I've done a sample program (In perl ESL) , which play a file to the
>>> caller and then it will call recvEvent() and print the event name. I've
>>> handled signals also.
>>>
>>> When I send SIGINT to my program (Perl), the signal handler is called and
>>> I can see the print output. But in the same time,  I received
>>> SERVER_DISCONNECTED from freeswitch as event.
>>>
>>> I don't know why I received SERVER_DISCONNECTED from freeswitch. Is it
>>> because, the recvEvent() from perl internally  calls the recvevent function
>>> in the Esl.c and when it waits to receive the information from socket, the
>>> signal occurred???
>>>
>>> Please clarify me!!
>>>
>>> Here is my program
>>> require ESL;
>>> use IO::Socket::INET;
>>> use Data::Dumper;
>>>
>>> my $ip = "192.168.1.222";
>>> my $sock = new IO::Socket::INET ( LocalHost => $ip,  LocalPort =>
>>> '8447',  Proto => 'tcp',  Listen => 1,  Reuse => 1 );
>>> die "Could not create socket: $!\n" unless $sock;
>>> &register_Signals();
>>>
>>> for(;;) {
>>>     my $new_sock = $sock->accept();
>>>     next if (not defined ($new_sock));
>>>     my $pid = fork();
>>>     if ($pid) {
>>>         close($new_sock);
>>>         next;
>>>     }
>>>     print "CHILD PID: $$\n";
>>>     my $host = $new_sock->sockhost();
>>>     my $fd = fileno($new_sock);
>>>
>>>     my $con = new ESL::ESLconnection($fd);
>>>     my $info = $con->getInfo();
>>>
>>>     my $uuid = $info->getHeader("unique-id");
>>>
>>>     printf "Connected call %s, from %s\n", $uuid,
>>> $info->getHeader("caller-caller-id-number");
>>>     my $r=$con->execute("answer");
>>>     print Dumper $r;
>>>     $con->events("plain","all");
>>>     my
>>> $re=$con->execute("playback","/usr/local/freeswitch1/sounds/en/us/callie/ivr/8000/ivr-welcome_to_freeswitch.wav");
>>>
>>>     while($con->connected()) {
>>>         my $e = $con->recvEvent();
>>>
>>>         if ($e) {
>>>             my $name = $e->getHeader("event-name");
>>>             print "EVENT [$name]\n";
>>>             if ($name eq "DTMF") {
>>>                 my $digit = $e->getHeader("dtmf-digit");
>>>                 print "$digit\n";
>>>             }
>>>         }
>>>     }
>>>     close($new_sock);
>>> }
>>> sub register_Signals() {
>>>     foreach ( keys %SIG ) {
>>>         $SIG{$_} = 'sig_Handler';
>>>     }
>>> }
>>>
>>> sub sig_Handler() {
>>>     my $handle=$_[0];
>>>     if($handle eq "INT") {
>>>         print "$$: SIGNAL SIG$handle is generated\n";
>>>     }
>>> }
>>>
>>>
>>> _______________________________________________
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
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>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> http://www.freeswitch.org
>>>
>>>
>>
>>
>> --
>> Anthony Minessale II
>>
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>
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