/usr/share/perl5/Mojo/IOLoop/Server.pm is in libmojolicious-perl 2.98+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 | package Mojo::IOLoop::Server;
use Mojo::Base 'Mojo::EventEmitter';
use Carp 'croak';
use File::Basename 'dirname';
use File::Spec::Functions 'catfile';
use IO::Socket::INET;
use Scalar::Util 'weaken';
use Socket qw(IPPROTO_TCP TCP_NODELAY);
# IPv6 support requires IO::Socket::INET6
use constant IPV6 => $ENV{MOJO_NO_IPV6}
? 0
: eval 'use IO::Socket::INET6 2.69 (); 1';
# TLS support requires IO::Socket::SSL
use constant TLS => $ENV{MOJO_NO_TLS} ? 0
: eval(IPV6 ? 'use IO::Socket::SSL 1.37 (); 1'
: 'use IO::Socket::SSL 1.37 "inet4"; 1');
use constant TLS_READ => TLS ? IO::Socket::SSL::SSL_WANT_READ() : 0;
use constant TLS_WRITE => TLS ? IO::Socket::SSL::SSL_WANT_WRITE() : 0;
# To regenerate the certificate run this command (18.04.2012)
# openssl req -new -x509 -keyout server.key -out server.crt -nodes -days 7300
my $CERT = catfile dirname(__FILE__), 'server.crt';
my $KEY = catfile dirname(__FILE__), 'server.key';
has accepts => 10;
has reactor => sub {
require Mojo::IOLoop;
Mojo::IOLoop->singleton->reactor;
};
# "Your guilty consciences may make you vote Democratic, but secretly you all
# yearn for a Republican president to lower taxes, brutalize criminals, and
# rule you like a king!"
sub DESTROY {
my $self = shift;
if (my $port = $self->{port}) { $ENV{MOJO_REUSE} =~ s/(?:^|\,)$port\:\d+// }
return unless my $reactor = $self->{reactor};
$self->stop if $self->{handle};
$reactor->remove($_) for values %{$self->{handles}};
}
# "And I gave that man directions, even though I didn't know the way,
# because that's the kind of guy I am this week."
sub listen {
my $self = shift;
my $args = ref $_[0] ? $_[0] : {@_};
# Look for reusable file descriptor
my $reuse = my $port = $self->{port} = $args->{port} || 3000;
$ENV{MOJO_REUSE} ||= '';
my $fd;
if ($ENV{MOJO_REUSE} =~ /(?:^|\,)$reuse\:(\d+)/) { $fd = $1 }
# Allow file descriptor inheritance
local $^F = 1000;
# Reuse file descriptor
my $handle;
my $class = IPV6 ? 'IO::Socket::INET6' : 'IO::Socket::INET';
if (defined $fd) {
$handle = $class->new;
$handle->fdopen($fd, 'r') or croak "Can't open file descriptor $fd: $!";
}
# New socket
else {
my %options = (
Listen => $args->{backlog} // SOMAXCONN,
LocalAddr => $args->{address} || '0.0.0.0',
LocalPort => $port,
Proto => 'tcp',
ReuseAddr => 1,
Type => SOCK_STREAM
);
$options{LocalAddr} =~ s/[\[\]]//g;
$handle = $class->new(%options) or croak "Can't create listen socket: $!";
$fd = fileno $handle;
$reuse = ",$reuse" if length $ENV{MOJO_REUSE};
$ENV{MOJO_REUSE} .= "$reuse:$fd";
}
$handle->blocking(0);
$self->{handle} = $handle;
# TLS
return unless $args->{tls};
croak "IO::Socket::SSL 1.37 required for TLS support" unless TLS;
# Options
my $options = $self->{tls} = {
SSL_cert_file => $args->{tls_cert} || $CERT,
SSL_key_file => $args->{tls_key} || $KEY,
SSL_startHandshake => 0
};
%$options = (
%$options,
SSL_ca_file => -T $args->{tls_ca} ? $args->{tls_ca} : undef,
SSL_verify_mode => 0x03
) if $args->{tls_ca};
}
sub generate_port {
IO::Socket::INET->new(Listen => 5, LocalAddr => '127.0.0.1', Proto => 'tcp')
->sockport;
}
sub start {
my $self = shift;
weaken $self;
$self->reactor->io(
$self->{handle} => sub { $self->_accept for 1 .. $self->accepts });
}
sub stop {
my $self = shift;
$self->reactor->remove($self->{handle});
}
sub _accept {
my $self = shift;
# Accept
return unless my $handle = $self->{handle}->accept;
$handle->blocking(0);
# Disable Nagle's algorithm
setsockopt $handle, IPPROTO_TCP, TCP_NODELAY, 1;
# Start TLS handshake
return $self->emit_safe(accept => $handle) unless my $tls = $self->{tls};
weaken $self;
$tls->{SSL_error_trap} = sub {
return unless my $handle = delete $self->{handles}{shift()};
$self->reactor->remove($handle);
close $handle;
};
return unless $handle = IO::Socket::SSL->start_SSL($handle, %$tls);
$self->reactor->io($handle => sub { $self->_tls($handle) });
$self->{handles}{$handle} = $handle;
}
# "Where on my badge does it say anything about protecting people?
# Uh, second word, chief."
sub _tls {
my ($self, $handle) = @_;
# Accepted
if ($handle->accept_SSL) {
$self->reactor->remove($handle);
delete $self->{handles}{$handle};
return $self->emit_safe(accept => $handle);
}
# Switch between reading and writing
my $err = $IO::Socket::SSL::SSL_ERROR;
if ($err == TLS_READ) { $self->reactor->watch($handle, 1, 0) }
elsif ($err == TLS_WRITE) { $self->reactor->watch($handle, 1, 1) }
}
1;
=head1 NAME
Mojo::IOLoop::Server - Non-blocking TCP server
=head1 SYNOPSIS
use Mojo::IOLoop::Server;
# Create listen socket
my $server = Mojo::IOLoop::Server->new;
$server->on(accept => sub {
my ($server, $handle) = @_;
...
});
$server->listen(port => 3000);
# Start and stop accepting connections
$server->start;
$server->stop;
=head1 DESCRIPTION
L<Mojo::IOLoop::Server> accepts TCP connections for L<Mojo::IOLoop>.
=head1 EVENTS
L<Mojo::IOLoop::Server> can emit the following events.
=head2 C<accept>
$server->on(accept => sub {
my ($server, $handle) = @_;
...
});
Emitted safely for each accepted connection.
=head1 ATTRIBUTES
L<Mojo::IOLoop::Server> implements the following attributes.
=head2 C<accepts>
my $accepts = $server->accepts;
$server = $server->accepts(10);
Number of connections to accept at once, defaults to C<10>.
=head2 C<reactor>
my $reactor = $server->reactor;
$server = $server->reactor(Mojo::Reactor::Poll->new);
Low level event reactor, defaults to the C<reactor> attribute value of the
global L<Mojo::IOLoop> singleton.
=head1 METHODS
L<Mojo::IOLoop::Server> inherits all methods from L<Mojo::EventEmitter> and
implements the following new ones.
=head2 C<listen>
$server->listen(port => 3000);
Create a new listen socket. Note that TLS support depends on
L<IO::Socket::SSL> and IPv6 support on L<IO::Socket::INET6>.
These options are currently available:
=over 2
=item C<address>
Local address to listen on, defaults to all.
=item C<backlog>
Maximum backlog size, defaults to C<SOMAXCONN>.
=item C<port>
Port to listen on.
=item C<tls>
Enable TLS.
=item C<tls_ca>
Path to TLS certificate authority file.
=item C<tls_cert>
Path to the TLS cert file, defaults to a built-in test certificate.
=item C<tls_key>
Path to the TLS key file, defaults to a built-in test key.
=back
=head2 C<generate_port>
my $port = $server->generate_port;
Find a free TCP port, this is a utility function primarily used for tests.
=head2 C<start>
$server->start;
Start accepting connections.
=head2 C<stop>
$server->stop;
Stop accepting connections.
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicio.us>.
=cut
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