[Freeswitch-users] Server Disconnected when SIGINT occured

lakshmanan ganapathy lakindia89 at gmail.com
Tue Jan 19 01:07:34 PST 2010 

I tried with SIGUSR1, but no progress. I got SERVER_DISCONNECTED.
Output:

CHILD 3814: Received USR1
EVENT [SERVER_DISCONNECTED]

In esl.c, in esl_recv_event() function, line no: 824
if (rrval < 0) {
                        strerror_r(handle->errnum, handle->err,
sizeof(handle->err));
                        goto fail;
}
When the program is blocked under receive, I passed the signal. So recv
returns -1, and in fail: it call esl_disconnect(handle).

Is it because of this??? If so, whether it should be fixed or not???



On Mon, Jan 18, 2010 at 9:54 PM, Anthony Minessale <
anthony.minessale at gmail.com> wrote:

> try a less famous signal like SIGUSR1 it's possible something in perl still
> reacts to SIGINT
>
>
>
> On Mon, Jan 18, 2010 at 5:22 AM, lakshmanan ganapathy <
> lakindia89 at gmail.com> wrote:
>
>> 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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>>>>> http://www.freeswitch.org
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Anthony Minessale II
>>>>
>>>> FreeSWITCH http://www.freeswitch.org/
>>>> ClueCon http://www.cluecon.com/
>>>> Twitter: http://twitter.com/FreeSWITCH_wire
>>>>
>>>> AIM: anthm
>>>> MSN:anthony_minessale at hotmail.com <MSN%3Aanthony_minessale at hotmail.com>
>>>> GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com<PAYPAL%3Aanthony.minessale at gmail.com>
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>>>>
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>>>>
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>>>
>>
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>>
>
>
> --
> Anthony Minessale II
>
> FreeSWITCH http://www.freeswitch.org/
> ClueCon http://www.cluecon.com/
> Twitter: http://twitter.com/FreeSWITCH_wire
>
> AIM: anthm
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>
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