Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

socket time out

by xarex (Initiate)
on Nov 09, 2007 at 14:47 UTC ( #649910=perlquestion: print w/replies, xml ) Need Help??

xarex has asked for the wisdom of the Perl Monks concerning the following question:

Hi monks
i have a forking server that is accepting connections, writing a log and then closing
The proble i have is that sometimes, the client does not send data
and this is keeping the connection open,
is there some way that i can close the connection say after 2 min if there is no data sent?
below is a snippet of what i currently have
while(my $connection = $server->accept){ my $name = $connection->peerhost; my $port = $connection->peerport; if (my $pid = fork){ close $connection; next; # on to the next connection }else{ # child process - handle connection print $connection "You're connected to the server!\n"; while (<$connection>){ use HTTP::Date; my ($date, $time) = split(" ", HTTP::Date::time2iso()); my ($hour, $min) = split(":", $time); open (my $log, '+>>',"../../home/freetrac/public_html/logs/$po +rt $date.txt") || die "Couldn't open log.txt: $!"; print $log $_; close $log; exit(0); } $connection->shutdown(SHUT_RDWR); exit; } }

Any help would be great
Thanks
K-

Replies are listed 'Best First'.
Re: socket time out
by oha (Friar) on Nov 09, 2007 at 15:27 UTC
    you could try using alarm in an eval block (untested):
    eval { local $SIG{'ALRM'} = sub { die "Timed out" }; alarm($timeout); while(<$conn>) { .... alarm($timeout); } alarm(0); } if ($@ =~ /Timed out/) { print STDOUT "Timed Out.\r\n"; }
    Oha
      being new to perl i tried that exactly as you said
      but its giving complitaion errors,
      could you please try to be a little more specific?
      Thanks
      K-
        It's just missing a ; in the example at the end of the eval closing brace:
        eval {
            local $SIG{'ALRM'} = sub { die "Timed out" };
            alarm($timeout);
            while(<$conn>) {
               ....
               alarm($timeout);
            }
            alarm(0);
        };
        if ($@ =~ /Timed out/) {
            print STDOUT "Timed Out.\r\n";
        }
        
Re: socket time out
by weismat (Friar) on Nov 09, 2007 at 17:09 UTC
    Use IO::Select.
    my $select=new IO::Select(); $select->add($connection); if ($select->can_read($timeout) { #handle timely answer } else { #timeout }

Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Node Status?
node history
Node Type: perlquestion [id://649910]
Approved by ikegami
help
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others meditating upon the Monastery: (4)
As of 2023-12-10 20:33 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    What's your preferred 'use VERSION' for new CPAN modules in 2023?











    Results (41 votes). Check out past polls.

    Notices?