/usr/share/perl5/HTTP/Server/PSGI.pm is in libplack-perl 1.0042-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 | package HTTP::Server::PSGI;
use strict;
use warnings;
use Carp ();
use Plack;
use Plack::HTTPParser qw( parse_http_request );
use IO::Socket::INET;
use HTTP::Date;
use HTTP::Status;
use List::Util qw(max sum);
use Plack::Util;
use Stream::Buffered;
use Plack::Middleware::ContentLength;
use POSIX qw(EINTR);
use Socket qw(IPPROTO_TCP TCP_NODELAY);
use Try::Tiny;
use Time::HiRes qw(time);
my $alarm_interval;
BEGIN {
if ($^O eq 'MSWin32') {
$alarm_interval = 1;
} else {
Time::HiRes->import('alarm');
$alarm_interval = 0.1;
}
}
use constant MAX_REQUEST_SIZE => 131072;
use constant MSWin32 => $^O eq 'MSWin32';
sub new {
my($class, %args) = @_;
my $self = bless {
host => $args{host} || 0,
port => $args{port} || 8080,
timeout => $args{timeout} || 300,
server_software => $args{server_software} || $class,
server_ready => $args{server_ready} || sub {},
ssl => $args{ssl},
ipv6 => $args{ipv6},
ssl_key_file => $args{ssl_key_file},
ssl_cert_file => $args{ssl_cert_file},
}, $class;
$self;
}
sub run {
my($self, $app) = @_;
$self->setup_listener();
$self->accept_loop($app);
}
sub prepare_socket_class {
my($self, $args) = @_;
if ($self->{ssl} && $self->{ipv6}) {
Carp::croak("SSL and IPv6 are not supported at the same time (yet). Choose one.");
}
if ($self->{ssl}) {
eval { require IO::Socket::SSL; 1 }
or Carp::croak("SSL suport requires IO::Socket::SSL");
$args->{SSL_key_file} = $self->{ssl_key_file};
$args->{SSL_cert_file} = $self->{ssl_cert_file};
return "IO::Socket::SSL";
} elsif ($self->{ipv6}) {
eval { require IO::Socket::IP; 1 }
or Carp::croak("IPv6 support requires IO::Socket::IP");
$self->{host} ||= '::';
$args->{LocalAddr} ||= '::';
return "IO::Socket::IP";
}
return "IO::Socket::INET";
}
sub setup_listener {
my $self = shift;
my %args = (
Listen => SOMAXCONN,
LocalPort => $self->{port},
LocalAddr => $self->{host},
Proto => 'tcp',
ReuseAddr => 1,
);
my $class = $self->prepare_socket_class(\%args);
$self->{listen_sock} ||= $class->new(%args)
or die "failed to listen to port $self->{port}: $!";
$self->{server_ready}->({ %$self, proto => $self->{ssl} ? 'https' : 'http' });
}
sub accept_loop {
my($self, $app) = @_;
$app = Plack::Middleware::ContentLength->wrap($app);
while (1) {
local $SIG{PIPE} = 'IGNORE';
if (my $conn = $self->{listen_sock}->accept) {
$conn->setsockopt(IPPROTO_TCP, TCP_NODELAY, 1)
or die "setsockopt(TCP_NODELAY) failed:$!";
my $env = {
SERVER_PORT => $self->{port},
SERVER_NAME => $self->{host},
SCRIPT_NAME => '',
REMOTE_ADDR => $conn->peerhost,
REMOTE_PORT => $conn->peerport || 0,
'psgi.version' => [ 1, 1 ],
'psgi.errors' => *STDERR,
'psgi.url_scheme' => $self->{ssl} ? 'https' : 'http',
'psgi.run_once' => Plack::Util::FALSE,
'psgi.multithread' => Plack::Util::FALSE,
'psgi.multiprocess' => Plack::Util::FALSE,
'psgi.streaming' => Plack::Util::TRUE,
'psgi.nonblocking' => Plack::Util::FALSE,
'psgix.harakiri' => Plack::Util::TRUE,
'psgix.input.buffered' => Plack::Util::TRUE,
'psgix.io' => $conn,
};
$self->handle_connection($env, $conn, $app);
$conn->close;
last if $env->{'psgix.harakiri.commit'};
}
}
}
sub handle_connection {
my($self, $env, $conn, $app) = @_;
my $buf = '';
my $res = [ 400, [ 'Content-Type' => 'text/plain' ], [ 'Bad Request' ] ];
while (1) {
my $rlen = $self->read_timeout(
$conn, \$buf, MAX_REQUEST_SIZE - length($buf), length($buf),
$self->{timeout},
) or return;
my $reqlen = parse_http_request($buf, $env);
if ($reqlen >= 0) {
$buf = substr $buf, $reqlen;
if (my $cl = $env->{CONTENT_LENGTH}) {
my $buffer = Stream::Buffered->new($cl);
while ($cl > 0) {
my $chunk;
if (length $buf) {
$chunk = $buf;
$buf = '';
} else {
$self->read_timeout($conn, \$chunk, $cl, 0, $self->{timeout})
or return;
}
$buffer->print($chunk);
$cl -= length $chunk;
}
$env->{'psgi.input'} = $buffer->rewind;
} else {
open my $input, "<", \$buf;
$env->{'psgi.input'} = $input;
}
$res = Plack::Util::run_app $app, $env;
last;
}
if ($reqlen == -2) {
# request is incomplete, do nothing
} elsif ($reqlen == -1) {
# error, close conn
last;
}
}
if (ref $res eq 'ARRAY') {
$self->_handle_response($res, $conn);
} elsif (ref $res eq 'CODE') {
$res->(sub {
$self->_handle_response($_[0], $conn);
});
} else {
die "Bad response $res";
}
return;
}
sub _handle_response {
my($self, $res, $conn) = @_;
my @lines = (
"Date: @{[HTTP::Date::time2str()]}\015\012",
"Server: $self->{server_software}\015\012",
);
Plack::Util::header_iter($res->[1], sub {
my ($k, $v) = @_;
push @lines, "$k: $v\015\012";
});
unshift @lines, "HTTP/1.0 $res->[0] @{[ HTTP::Status::status_message($res->[0]) ]}\015\012";
push @lines, "\015\012";
$self->write_all($conn, join('', @lines), $self->{timeout})
or return;
if (defined $res->[2]) {
my $err;
my $done;
{
local $@;
eval {
Plack::Util::foreach(
$res->[2],
sub {
$self->write_all($conn, $_[0], $self->{timeout})
or die "failed to send all data\n";
},
);
$done = 1;
};
$err = $@;
};
unless ($done) {
if ($err =~ /^failed to send all data\n/) {
return;
} else {
die $err;
}
}
} else {
return Plack::Util::inline_object
write => sub { $self->write_all($conn, $_[0], $self->{timeout}) },
close => sub { };
}
}
# returns 1 if socket is ready, undef on timeout
sub do_timeout {
my ($self, $cb, $timeout) = @_;
local $SIG{ALRM} = sub {};
my $wait_until = time + $timeout;
alarm($timeout);
my $ret;
while (1) {
if ($ret = $cb->()) {
last;
} elsif (! (! defined($ret) && $! == EINTR)) {
undef $ret;
last;
}
# got EINTR
my $left = $wait_until - time;
last if $left <= 0;
alarm($left + $alarm_interval);
}
alarm(0);
$ret;
}
# returns (positive) number of bytes read, or undef if the socket is to be closed
sub read_timeout {
my ($self, $sock, $buf, $len, $off, $timeout) = @_;
$self->do_timeout(sub { $sock->sysread($$buf, $len, $off) }, $timeout);
}
# returns (positive) number of bytes written, or undef if the socket is to be closed
sub write_timeout {
my ($self, $sock, $buf, $len, $off, $timeout) = @_;
$self->do_timeout(sub { $sock->syswrite($buf, $len, $off) }, $timeout);
}
# writes all data in buf and returns number of bytes written or undef if failed
sub write_all {
my ($self, $sock, $buf, $timeout) = @_;
return 0 unless defined $buf;
_encode($buf);
my $off = 0;
while (my $len = length($buf) - $off) {
my $ret = $self->write_timeout($sock, $buf, $len, $off, $timeout)
or return;
$off += $ret;
}
return length $buf;
}
# syswrite() will crash when given wide characters
sub _encode {
if ($_[0] =~ /[^\x00-\xff]/) {
Carp::carp("Wide character outside byte range in response. Encoding data as UTF-8");
utf8::encode($_[0]);
}
}
1;
__END__
=head1 NAME
HTTP::Server::PSGI - Standalone PSGI compatible HTTP server
=head1 SYNOPSIS
use HTTP::Server::PSGI;
my $server = HTTP::Server::PSGI->new(
host => "127.0.0.1",
port => 9091,
timeout => 120,
);
$server->run($app);
=head1 DESCRIPTION
HTTP::Server::PSGI is a standalone, single-process and PSGI compatible
HTTP server implementations.
This server should be great for the development and testing, but might
not be suitable for a production use.
Some features in HTTP/1.1, notably chunked requests, responses and
pipeline requests are B<NOT> supported, and it also does not support
HTTP/0.9.
See L<Starman> or uWSGI server if you want HTTP/1.1 and other features
ready for a production use.
=head1 PREFORKING
L<HTTP::Server::PSGI> does B<NOT> support preforking. See L<Starman>
or L<Starlet> if you want a multi-process prefork web servers.
=head1 HARAKIRI SUPPORT
This web server supports `psgix.harakiri` extension defined in the
L<PSGI::Extensions>.
This application is a non-forking single process web server
(i.e. `psgi.multiprocess` is false), and if your application commits
harakiri, the entire web server stops too. In case this behavior is
not what you want, be sure to check `psgi.multiprocess` as well to
enable harakiri only in the preforking servers such as L<Starman>.
On the other hand, this behavior might be handy if you want to embed
this module in your application and serve HTTP requests for only short
period of time, then go back to your main program.
=head1 AUTHOR
Kazuho Oku
Tatsuhiko Miyagawa
=head1 SEE ALSO
L<Plack::Handler::Standalone> L<Starman> L<Starlet>
=cut
|