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Re: Perl EV script always closed with no warnings and error

by processor (Initiate)
on Apr 07, 2017 at 11:49 UTC ( #1187392=note: print w/replies, xml ) Need Help??


in reply to Perl EV script always closed with no warnings and error

Dear monks,

After 2 days running my script, i have found what causing my script dying after 1 days. The problem is not from the script. The problem comes from nohup. Before, I run the script using nohup on ssh session. The script run at pseudo terminal which dying after 1 day. now i run the script using "su - user -c 'nohup script'" to remove the pts. Everything fine now. Thank you for all help. Below is my full code after some modification, maybe someone want to use it as an example for "simple server and client socket in perl EV with forking and xor decrypt".

#!/usr/bin/env perl use strict; use warnings; use Socket qw(IPPROTO_TCP TCP_NODELAY); use IO::Socket; use EV; use Fcntl; $| = 1; my $server = IO::Socket::INET->new(Listen => SOMAXCONN, LocalAddr => '0.0.0.0', LocalPort => 8080, Proto => 'tcp', Reuse => 1, Blocking => 0 ) or die "ERROR in Socke +t Creation : $!\n"; $server->autoflush(1); print "Server listening on socket 8080\n"; $server->setsockopt( IPPROTO_TCP, TCP_NODELAY, 1); my $pid = fork ; my $i = 1; my $xor = "\x01"; while($i < 8192){ $xor = $xor . "\x01"; ++$i; }; my $all_data = {}; my $w_server; $w_server = EV::io $server, EV::READ, \&create_client; my $server_data = { sock => $server, ev => $w_server }; $all_data->{$server} = $server_data; EV::run; sub all_error{ my ($fh) = shift; my $data = delete $all_data->{$fh}; $data->{keep_alive}->stop; undef $data->{keep_alive}; $data->{client_w}->stop; $data->{client_r}->stop; $data->{agent_w}->stop if $data->{agent_w}; $data->{agent_r}->stop if $data->{agent_r}; $data->{agent}->shutdown(2) if $data->{agent}; $data->{client}->shutdown(2); close $data->{agent} if $data->{agent}; close $data->{client}; undef $data->{client_w} ; undef $data->{client_r} ; undef $data->{agent_w} ; undef $data->{agent_r} ; %{$data} = (); undef %{$data}; #push @cache_data, $data; }; sub create_agent{ my ($data,$host, $port) = @_ ; my $agent = IO::Socket::INET->new(PeerAddr => "$host", PeerPort => $port, Proto => 'tcp', Blocking => 0); if(!$agent){ all_error $data->{client}; return 1; }; $agent->autoflush(1); $agent->setsockopt( IPPROTO_TCP, TCP_NODELAY, 1); $data->{agent} = $agent; $data->{agent_w} = EV::io $agent, EV::WRITE, sub { my ($w, $event) = @_ ; $w->stop; if($w->data->{agent_connected}){ my $ln = syswrite $w->fh, $w->data->{agent_wdata}; if(!$ln){ #print "1\n"; all_error $w->data->{client}; return 1; } $w->data->{client_r}->start; } else { if($w->fh->connected){ $w->data->{client_wdata} = "HTTP/1.1 200 OK\r\nHost: 123 +.xl.co.id/min_balance7\r\n\r\n"; $w->data->{client_w}->start; $w->data->{agent_connected} = 1; #$w->data->{agent_r}->start; $w->data->{client_r}->start; } else { #print "2"; all_error $w->data->{client}; return 1; }; }; }; $data->{agent_r} = EV::io_ns $agent, EV::READ, sub { my ($w, $event) = @_ ; my $buf; $w->stop; my $ln = sysread $w->fh, $buf, 8192; if(!$ln){ #print "3"; all_error $w->data->{client}; return 1; } else{ $w->data->{client_wdata} = $buf; $w->data->{client_w}->start; }; }; $data->{agent_r}->data($data); $data->{agent_w}->data($data); }; sub create_client{ my ($w, $event) = @_ ; my $client = $server->accept; if(!$client){ return 1; }; fcntl($client, F_SETFL, O_NONBLOCK) ; $client->autoflush(1); $client->setsockopt( IPPROTO_TCP, TCP_NODELAY, 1); my $data; $data->{agent_connected} = 0; $data->{agent_count} = 0; $data->{client_count} = 0; $data->{client} = $client; $all_data->{$client} = $data; $data->{keep_alive} = EV::timer_ns 120, 0, sub { my $w = shift; #print "5"; all_error $w->data->{client}; return 1; }; $data->{client_w} = EV::io_ns $client, EV::WRITE, sub { my ($w, $event) = @_ ; $w->stop; if($w->data->{client_wdata}){ my $ ln = syswrite $w->fh, $w->data->{client_wdata} +; if(!$ln){ #print "6"; all_error $w->data->{client}; return 1; }; }; $w->data->{agent_r}->start if $data->{agent_r}; $w->data->{keep_alive}->stop; $w->data->{keep_alive}->set(120,0); $w->data->{keep_alive}->start; }; $data->{client_r} = EV::io $client, EV::READ, sub { my ($w, $event) = @_ ; my ($buf, $ln); $w->stop; $ln = sysread $w->fh, $buf, 8192; if(!$ln){ #print "7"; all_error $w->data->{client}; return 1; } else{ $w->data->{keep_alive}->stop; $w->data->{keep_alive}->set(120,0); $w->data->{keep_alive}->start; if($w->data->{client_count} == 0){ if($ln < 15){ all_error $w->data->{client}; return 1; }; # print $buf; my ($pass, $proto, $host, $port) = auth($buf); if($pass && $pass eq "4pr1l" && $host && $port + && $proto){ create_agent $w->data, $host, $port; } else { #print "8"; all_error $w->data->{client}; return 1; }; } # elsif($w->data->{client_count} == 1){ else{ my $enc = substr $xor,0,length($buf); $w->data->{agent_wdata} = $buf ^ $enc; $w->data->{agent_w}->start; }; # else{ # $w->data->{agent_wdata} = $buf; # $w->data->{agent_w}->start; # }; }; $w->data->{client_count} = 2; }; $data->{keep_alive}->data($data); $data->{client_r}->data($data); $data->{client_w}->data($data); $data->{keep_alive}->start; }; sub auth{ my ($buf) = @_; my ($pass, $proto, $host, $port) = ("","","",""); my $i = 0; my $status = 0; while($i < length $buf){ my $tmp = substr $buf,$i,1; if($tmp eq "/"){ ++$status; ++$i; if($status == 5){ last; } next; } if($status == 1){ $pass = $pass . $tmp; } elsif($status == 2){ $proto = $proto . $tmp; } elsif($status == 3){ $host = $host. $tmp; } elsif($status == 4){ $port = $port . $tmp; } ++$i; } return ($pass, $proto, $host, $port); };

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