Perl serveur HTTP

J'ai passé beaucoup de temps à essayer de faire un "simple" utilisable serveur web par de nombreux utilisateurs simultanément. La documentation pour HTTP::Daemon et d'autres ressources en ligne n'est pas de m'aider.

Ici est un travail (Ubuntu 12.10 avec défaut paquet Perl v5.14.2) exemple preforked serveur web avec différents type de contenu des pages et des pages d'erreur:

#!/usr/bin/perl
use strict;
use warnings;
use CGI qw/ :standard /;
use Data::Dumper;
use HTTP::Daemon;
use HTTP::Response;
use HTTP::Status;
use POSIX qw/ WNOHANG /;
use constant HOSTNAME => qx{hostname};
my %O = (
'listen-host' => '127.0.0.1',
'listen-port' => 8080,
'listen-clients' => 30,
'listen-max-req-per-child' => 100,
);
my $d = HTTP::Daemon->new(
LocalAddr => $O{'listen-host'},
LocalPort => $O{'listen-port'},
Reuse => 1,
) or die "Can't start http listener at $O{'listen-host'}:$O{'listen-port'}";
print "Started HTTP listener at " . $d->url . "\n";
my %chld;
if ($O{'listen-clients'}) {
$SIG{CHLD} = sub {
# checkout finished children
while ((my $kid = waitpid(-1, WNOHANG)) > 0) {
delete $chld{$kid};
}
};
}
while (1) {
if ($O{'listen-clients'}) {
# prefork all at once
for (scalar(keys %chld) .. $O{'listen-clients'} - 1 ) {
my $pid = fork;
if (!defined $pid) { # error
die "Can't fork for http child $_: $!";
}
if ($pid) { # parent
$chld{$pid} = 1;
}
else { # child
$_ = 'DEFAULT' for @SIG{qw/ INT TERM CHLD /};
http_child($d);
exit;
}
}
sleep 1;
}
else {
http_child($d);
}
}
sub http_child {
my $d = shift;
my $i;
my $css = <<CSS;
form { display: inline; }
CSS
while (++$i < $O{'listen-max-req-per-child'}) {
my $c = $d->accept or last;
my $r = $c->get_request(1) or last;
$c->autoflush(1);
print sprintf("[%s] %s %s\n", $c->peerhost, $r->method, $r->uri->as_string);
my %FORM = $r->uri->query_form();
if ($r->uri->path eq '/') {
_http_response($c, { content_type => 'text/html' },
start_html(
-title => HOSTNAME,
-encoding => 'utf-8',
-style => { -code => $css },
),
p('Here are all input parameters:'),
pre(Data::Dumper->Dump([\%FORM],['FORM'])),
(map { p(a({ href => $_->[0] }, $_->[1])) }
['/', 'Home'],
['/ping', 'Ping the simple text/plain content'],
['/error', 'Sample error page'],
['/other', 'Sample not found page'],
),
end_html(),
)
}
elsif ($r->uri->path eq '/ping') {
_http_response($c, { content_type => 'text/plain' }, 1);
}
elsif ($r->uri->path eq '/error') {
my $error = 'AAAAAAAAA! My server error!';
_http_error($c, RC_INTERNAL_SERVER_ERROR, $error);
die $error;
}
else {
_http_error($c, RC_NOT_FOUND);
}
$c->close();
undef $c;
}
}
sub _http_error {
my ($c, $code, $msg) = @_;
$c->send_error($code, $msg);
}
sub _http_response {
my $c = shift;
my $options = shift;
$c->send_response(
HTTP::Response->new(
RC_OK,
undef,
[
'Content-Type' => $options->{content_type},
'Cache-Control' => 'no-store, no-cache, must-revalidate, post-check=0, pre-check=0',
'Pragma' => 'no-cache',
'Expires' => 'Thu, 01 Dec 1994 16:00:00 GMT',
],
join("\n", @_),
)
);
}

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