Hi all!
I've got a problem - probably easy to solve but I practically don't know Perl
nor modules so it's hard for me.
The problem concerns two processes communicating via sockets. I need to know
that one of them died already and there is no point in sending anything to it.
This is a script iris_s.pl acting as server :
=============== =============== =============
#!/usr/bin/perl
use IO::Socket;
use IO::Select;
# Start the RAD server
$server = new IO::Socket::INE T(Listen => 10,
LocalPort => 2350,
Reuse => 1)
or die "Could not establish a server\n";
print "Server started\n";
$client = $server->accept();
$message = <$client>;
push (@IrisReq, $client);
print "slepping for 10 seconds\n";
sleep 10;
$IrisPort = shift @IrisReq;
if ((@ready = IO::Select->new($IrisPor t)->can_write(0) )) {
print "Can write\n";
} else {
print "Can NOT write\n";
}
sleep 5;
$IrisPort->close;
=============== =============== =============
This is a script iris.pl that sends request to iris_s.pl and waits for an
answer but after 5 seconds finishes execution:
=============== =============== =============
#!/usr/bin/perl
#binmode(STDIN) ;
#binmode(STDOUT );
#binmode(STDERR );
use IO::Socket;
use IO::Select;
unless($sock = IO::Socket::INE T->new("localhost :2350")) {
print "NoRadErr\n ";
}
$sock->autoflush(1) ;
$sel = IO::Select->new();
$sel->add($sock);
print $sock "Iris: Req \n";
print "Waiting for 5 seconds\n";
@ready = $sel->can_read(5);
if (@ready) {
chomp($RexPort = <$sock>);
} else {
print "RadTimeoutErr\ n";
}
$sock->close;
$sel->remove($sock );
=============== =============== =============
Testing : start iris_s.pl and then iris.pl. Finally iris_s.pl will print 'Can
write'.
How can I check in iris_s.pl that iris.pl died already? Or: what should I do
in iris.pl to let iris_s.pl know that socked is closed?
Please be descriptive as I'm far from being Perl expert.
Regards,
Tomasz Judycki
Textus Virtualis Sp. z o.o.
Szaserów 3
04-293 Warszawa
tel/fax (48 22) 879 82 00
I've got a problem - probably easy to solve but I practically don't know Perl
nor modules so it's hard for me.
The problem concerns two processes communicating via sockets. I need to know
that one of them died already and there is no point in sending anything to it.
This is a script iris_s.pl acting as server :
=============== =============== =============
#!/usr/bin/perl
use IO::Socket;
use IO::Select;
# Start the RAD server
$server = new IO::Socket::INE T(Listen => 10,
LocalPort => 2350,
Reuse => 1)
or die "Could not establish a server\n";
print "Server started\n";
$client = $server->accept();
$message = <$client>;
push (@IrisReq, $client);
print "slepping for 10 seconds\n";
sleep 10;
$IrisPort = shift @IrisReq;
if ((@ready = IO::Select->new($IrisPor t)->can_write(0) )) {
print "Can write\n";
} else {
print "Can NOT write\n";
}
sleep 5;
$IrisPort->close;
=============== =============== =============
This is a script iris.pl that sends request to iris_s.pl and waits for an
answer but after 5 seconds finishes execution:
=============== =============== =============
#!/usr/bin/perl
#binmode(STDIN) ;
#binmode(STDOUT );
#binmode(STDERR );
use IO::Socket;
use IO::Select;
unless($sock = IO::Socket::INE T->new("localhost :2350")) {
print "NoRadErr\n ";
}
$sock->autoflush(1) ;
$sel = IO::Select->new();
$sel->add($sock);
print $sock "Iris: Req \n";
print "Waiting for 5 seconds\n";
@ready = $sel->can_read(5);
if (@ready) {
chomp($RexPort = <$sock>);
} else {
print "RadTimeoutErr\ n";
}
$sock->close;
$sel->remove($sock );
=============== =============== =============
Testing : start iris_s.pl and then iris.pl. Finally iris_s.pl will print 'Can
write'.
How can I check in iris_s.pl that iris.pl died already? Or: what should I do
in iris.pl to let iris_s.pl know that socked is closed?
Please be descriptive as I'm far from being Perl expert.
Regards,
Tomasz Judycki
Textus Virtualis Sp. z o.o.
Szaserów 3
04-293 Warszawa
tel/fax (48 22) 879 82 00
