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Re: Parallel::ForkManager or something like that?

by marioroy (Priest)
on Aug 12, 2017 at 02:40 UTC ( #1197292=note: print w/replies, xml ) Need Help??


in reply to Parallel::ForkManager or something like that?

Hello Sascha2018,

See IO::FDPass for passing a handle to a process. Another way is storing the handle into a hash and use $ident as the key. I'm passing $dent to $pm->start($ident). That sets the identification for the process. Inside the on_finish block, remove the entry from the hash.

Well, something like the following. Please adjust the _uid function accordingly, to your specification.

#!/usr/bin/perl use strict; use warnings; use feature 'state'; no strict 'refs'; use IO::Socket; use IO::Select; use Parallel::ForkManager; my $die = 0; my %lkup; sub _uid { state $uid = 0; $uid = 1 if ++$uid > 2e9; $uid; } $SIG{INT} = sub { $die = 1; exit; }; my %clients = (); my $select = IO::Select->new; my $server = IO::Socket::INET->new( LocalHost => 'localhost', LocalPort => 2222, Proto => 'tcp', Listen => 10000, Reuse => 1, ) or die "Sock Error: $!\n"; my $pm = Parallel::ForkManager->new(10); $pm->set_waitpid_blocking_sleep(0); $pm->run_on_finish( sub { my ($pid,$exitcode,$ident,$exitsignal,$coredump,$get) = @_; $clients{$ident}->{ident} = $ident; $clients{$ident}->{ip} = $get->{ip}; $clients{$ident}->{socket} = delete $lkup{$ident}; }); $server->autoflush(1); $select->add($server); while (!$die) { foreach my $key ($select->can_read()) { # foreach if ($key eq $server) { # if $bay eq $server next if $key eq ""; my $bay = $server->accept or next; my $ip = $bay->peerhost(); my $ident = _uid(); $lkup{$ident} = $bay; $select->add($bay); $pm->start($ident) and next; select($bay); $| = 1; foreach my $client (keys %clients) { print "Connection from $clients{$client}->{ip} with Id +ent $clients{$client}->{ident} and Socket $clients{$client}->{socket} + ... OK\n"; } $pm->finish(0, { ip => $ip }); } } $pm->wait_all_children; } sub sendHeader { my $sock = shift; my $header =<<"EOT"; HTTP/1.0 200 OK Content-type: text/html EOT $sock->syswrite($header); }

Regards, Mario

Replies are listed 'Best First'.
Re^2: Parallel::ForkManager or something like that?
by Sascha2018 (Novice) on Aug 12, 2017 at 11:58 UTC
    Hello Mario. Thank you for your answer. I have modified the script a little bit, but if i want to send a http Header to $bay and open the site on http://127.0.0.1:2222 the browser shows me nothing or only if i have luck the script code. But not HTML ... What i do wrong ?
    #!/usr/bin/perl use strict; use warnings; use feature 'state'; no strict 'refs'; use IO::Socket; use IO::Select; use Parallel::ForkManager; my $die = 0; my %lkup; $|=1; sub _uid { state $uid = 0; $uid = 1 if ++$uid > 2e9; $uid; } $SIG{INT} = sub { $die = 1; exit; }; my %clients = (); my $select = IO::Select->new; my $server = IO::Socket::INET->new( LocalHost => '127.0.0.1', LocalPort => 2222, Proto => 'tcp', Listen => 10000, Reuse => 1, ) or die "Sock Error: $!\n"; my $pm = Parallel::ForkManager->new(10); $pm->set_waitpid_blocking_sleep(0); $pm->run_on_finish( sub { my ($pid,$exitcode,$ident,$exitsignal,$coredump,$get) = @_; $clients{$ident}->{ident} = $ident; $clients{$ident}->{ip} = $get->{ip}; $clients{$ident}->{socket} = delete $lkup{$ident}; }); $server->autoflush(1); $select->add($server); while (!$die) { foreach my $key ($select->can_read()) { # foreach if ($key eq $server) { # if $bay eq $server next if $key eq ""; my $bay = $server->accept or next; my $ip = $bay->peerhost(); my $ident = _uid(); $lkup{$ident} = $bay; $select->add($bay); my $buffer = <$bay>; if( $buffer =~ m/^GET\s\/\sHTTP\/1\.1/ ){ print "OK"; sendHeader($bay); my $html=<<"EOT"; <html> <head> </head> <body style='background-color: blue'> </body> </html> EOT $bay->syswrite($html); } $pm->start($ident) and next; print "$buffer\n"; $pm->finish(0, { ip => $ip }); } } $pm->wait_all_children; } sub sendHeader { my $sock = shift; my $header =<<"EOT"; HTTP/1.0 200 OK Content-type: text/html EOT for( 1.. 10 ){ $sock->syswrite("<!-- Server 2017 //-->\n"); } $sock->syswrite($header); }
      Now it works :) And how can i solve it that the processes are not blocking? If i open the address and port through the browser and open another browser where i connect to it, i can see the page only in one windows, till i close the browser. Then i can see the other page. Regards

        Hi Sascha2018. Run $pm->start before $select->add.

        while (!$die) { foreach my $key ($select->can_read()) { # foreach if ($key eq $server) { # if $bay eq $server next if $key eq ""; my $bay = $server->accept or next; my $ip = $bay->peerhost(); my $ident = _uid(); $lkup{$ident} = $bay; $pm->start($ident) and next; # <-- spawn worker here $select->add($bay); my $buffer = <$bay>; if ($buffer =~ m/^GET\s\/\sHTTP\/1\.1/) { print "OK"; sendHeader($bay); my $html=<<"EOT"; <html> <head> </head> <body style='background-color: blue'> </body> </html> EOT $bay->syswrite($html); } print "$buffer\n"; $pm->finish(0, { ip => $ip }); } } $pm->wait_all_children; }

        Regards, Mario

      Hello. In another script i have IO::Socket::SSL If i fork() with $pm->start($ident) and next; and call the IO::Socket::SSL->start_SSL() routine later, i only get
      DEBUG: .../IO/Socket/SSL.pm:1492: new ctx 44788592 DEBUG: .../IO/Socket/SSL.pm:938: start handshake DEBUG: .../IO/Socket/SSL.pm:505: starting sslifying
      in the console. The handshake does not finish if a client connects. If i make Strg+C on the console i get the rest , but only then.
      DEBUG: .../IO/Socket/SSL.pm:1528: free ctx 44788592 open=44788592 DEBUG: .../IO/Socket/SSL.pm:1533: free ctx 44788592 callback DEBUG: .../IO/Socket/SSL.pm:1536: OK free ctx 44788592
      Nothing happens in the browser :( What do i wrong?
        Whats wrong with this code ? I get no handshake .... Only i get this message in the console:
        DEBUG: .../IO/Socket/SSL.pm:1492: new ctx 32253824 DEBUG: .../IO/Socket/SSL.pm:938: start handshake DEBUG: .../IO/Socket/SSL.pm:505: starting sslifying DEBUG: .../IO/Socket/SSL.pm:545: Net::SSLeay::accept -> 0 DEBUG: .../IO/Socket/SSL.pm:1203: SSL connect accept failed because of + handshake problemserror:00000000:lib(0):func(0):reason(0) DEBUG: .../IO/Socket/SSL.pm:1528: free ctx 32253824 open=32253824 DEBUG: .../IO/Socket/SSL.pm:1533: free ctx 32253824 callback DEBUG: .../IO/Socket/SSL.pm:1536: OK free ctx 32253824 SSL accept failed: SSL connect accept failed because of handshake prob +lemserror:00000000:lib(0):func(0):reason(0) at testserver.pl line 101 +.
        use strict; use warnings; use feature 'state'; no strict 'refs'; my %lkup; our %config; our %language; our $dbh; our %srv_modes; our $HOST = $config{server}; our $PORT = $config{port}; our $last_RnR = time; our $last_UPDATE = time; our( %srvban, %loggedin, %rooms) = ((),(),(),()); my $uid; my $die = 0; require "config.cfg"; require 5.002; use IO::Socket::SSL 'inet4'; use IO::Select; $IO::Socket::SSL::DEBUG = 3; use Time::HiRes; use HTML::Template; use Text::Wrap; use Fcntl ':flock'; use strict; no strict 'refs'; $SIG{INT} = sub{ exit; }; use Parallel::ForkManager; $|=1; sub _uid { state $uid = 0; $uid = 1 if ++$uid > 2e9; $uid; } my %clients = (); my $select = IO::Select->new; my $server = IO::Socket::INET->new( LocalHost => 'host', LocalPort => 63027, Proto => 'tcp', Listen => 10000, Reuse => 1, ) or die "Sock Error: $!\n"; my $pm = Parallel::ForkManager->new(500); $pm->set_waitpid_blocking_sleep(0); $pm->run_on_finish( sub { my ($pid,$exitcode,$ident,$exitsignal,$coredump,$get) = @_; $clients{$ident}->{ident} = $ident; $clients{$ident}->{ip} = $get->{ip}; $clients{$ident}->{socket} = delete $lkup{$ident}; my $killsock = $get->{killing} || 0; my $sock = $clients{$ident}->{socket}; if($killsock){ delete $clients{$ident}; $select->remove($sock); } }); $server->autoflush(1); $select->add($server); while (1) { foreach my $key ($select->can_read()) { # foreach if ($key eq $server) { # if $bay eq $server next if $key eq ""; our $bay = $server->accept or next; my $ip = $bay->peerhost(); our $ident = _uid(); $lkup{$ident} = $bay; $select->add($bay); my $buffer = <$bay>; $pm->start($ident) and next; IO::Socket::SSL->start_SSL($bay, PeerAddr => $config{server}, SSL_verify_mode => SSL_VERIFY_PE +ER, verify_hostname => 1, SSL_hostname => $config{server}, SSL_port => $PORT, SSL_server => 1, SSL_ca_file => $config{ca_fil +e}, SSL_ca_path => $config{ca_path +}, SSL_verifycn_name => 'host', SSL_verifycn_scheme => 'http', SSL_cert_file => $config{cert_fi +le}, SSL_key_file => $config{key_file +}, ) or die "SSL accept failed: $SSL +_ERROR"; my $killing = 0; if( defined $buffer && $buffer =~ m/^GET\s\/\?sid=12\sHTTP +\/1\.1\s/ ){ print "$buffer"; sendHeader($bay); print "OK"; for( 1 .. 30 ){ # Firefox and other browsers $bay->syswrite("<!-- //--><!-- //--><!-- //--><!-- //--> +<!-- //-->\n\n"); } my $html=<<"EOT"; <html> <head> <title>hallo</title> </head> <body style='background-color: darkblue; color: #FFFFFF'> hello world </body> </html> EOT $bay->syswrite($html); }elsif( defined $buffer && $buffer =~ m/^GET\s\/\?printoal +l=1\sHTTP\/1\.1\s/ ){ foreach my $client( keys %clients ){ print "$buffer"; my $socket = $clients{$client}->{socket}; $socket->syswrite("The sun is shining\n"); print "Conntected: \n" . keys %clients; } $killing = 1; } $pm->finish(0, { ip => $ip, killing => $killing }); } } $pm->wait_all_children; } sub sendHeader { my $client = shift; if( defined $client ) { my $header =<<"EOT"; HTTP/1.1 200 OK Content-type: text/html\n\n EOT $client->syswrite($header); } }
        Please help thanks.. Regards Sascha

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