/usr/share/perl5/Mojo/Server/Daemon.pm is in libmojolicious-perl 5.54+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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use Mojo::Base 'Mojo::Server';
use Mojo::IOLoop;
use Mojo::URL;
use Scalar::Util 'weaken';
use constant DEBUG => $ENV{MOJO_DAEMON_DEBUG} || 0;
has acceptors => sub { [] };
has [qw(backlog max_clients silent)];
has inactivity_timeout => sub { $ENV{MOJO_INACTIVITY_TIMEOUT} // 15 };
has ioloop => sub { Mojo::IOLoop->singleton };
has listen => sub { [split ',', $ENV{MOJO_LISTEN} || 'http://*:3000'] };
has max_requests => 25;
sub DESTROY {
my $self = shift;
return unless my $loop = $self->ioloop;
$self->_remove($_) for keys %{$self->{connections} || {}};
$loop->remove($_) for @{$self->acceptors};
}
sub run {
my $self = shift;
local $SIG{INT} = local $SIG{TERM} = sub { $self->ioloop->stop };
$self->start->setuidgid->ioloop->start;
}
sub start {
my $self = shift;
# Resume accepting connections
my $loop = $self->ioloop;
if (my $servers = $self->{servers}) {
push @{$self->acceptors}, $loop->acceptor(delete $servers->{$_})
for keys %$servers;
}
# Start listening
else { $self->_listen($_) for @{$self->listen} }
if (my $max = $self->max_clients) { $loop->max_connections($max) }
return $self;
}
sub stop {
my $self = shift;
# Suspend accepting connections but keep listen sockets open
my $loop = $self->ioloop;
while (my $id = shift @{$self->acceptors}) {
my $server = $self->{servers}{$id} = $loop->acceptor($id);
$loop->remove($id);
$server->stop;
}
return $self;
}
sub _build_tx {
my ($self, $id, $c) = @_;
my $tx = $self->build_tx->connection($id);
$tx->res->headers->server('Mojolicious (Perl)');
my $handle = $self->ioloop->stream($id)->handle;
$tx->local_address($handle->sockhost)->local_port($handle->sockport);
$tx->remote_address($handle->peerhost)->remote_port($handle->peerport);
$tx->req->url->base->scheme('https') if $c->{tls};
# Handle upgrades and requests
weaken $self;
$tx->on(
upgrade => sub {
my ($tx, $ws) = @_;
$ws->server_handshake;
$self->{connections}{$id}{ws} = $ws;
}
);
$tx->on(
request => sub {
my $tx = shift;
$self->emit(request => $self->{connections}{$id}{ws} || $tx);
$tx->on(resume => sub { $self->_write($id) });
}
);
# Kept alive if we have more than one request on the connection
return ++$c->{requests} > 1 ? $tx->kept_alive(1) : $tx;
}
sub _close {
my ($self, $id) = @_;
# Finish gracefully
if (my $tx = $self->{connections}{$id}{tx}) { $tx->server_close }
delete $self->{connections}{$id};
}
sub _finish {
my ($self, $id, $tx) = @_;
# Always remove connection for WebSockets
return $self->_remove($id) if $tx->is_websocket;
# Finish transaction
$tx->server_close;
# Upgrade connection to WebSocket
my $c = $self->{connections}{$id};
if (my $ws = $c->{tx} = delete $c->{ws}) {
# Successful upgrade
if ($ws->res->code == 101) {
weaken $self;
$ws->on(resume => sub { $self->_write($id) });
}
# Failed upgrade
else {
delete $c->{tx};
$ws->server_close;
}
}
# Close connection if necessary
my $req = $tx->req;
return $self->_remove($id) if $req->error || !$tx->keep_alive;
# Build new transaction for leftovers
return unless length(my $leftovers = $req->content->leftovers);
$tx = $c->{tx} = $self->_build_tx($id, $c);
$tx->server_read($leftovers);
}
sub _listen {
my ($self, $listen) = @_;
my $url = Mojo::URL->new($listen);
my $query = $url->query;
my $options = {
address => $url->host,
backlog => $self->backlog,
reuse => scalar $query->param('reuse'),
};
if (my $port = $url->port) { $options->{port} = $port }
$options->{"tls_$_"} = scalar $query->param($_) for qw(ca cert ciphers key);
my $verify = $query->param('verify');
$options->{tls_verify} = hex $verify if defined $verify;
delete $options->{address} if $options->{address} eq '*';
my $tls = $options->{tls} = $url->protocol eq 'https';
weaken $self;
push @{$self->acceptors}, $self->ioloop->server(
$options => sub {
my ($loop, $stream, $id) = @_;
my $c = $self->{connections}{$id} = {tls => $tls};
warn "-- Accept (@{[$stream->handle->peerhost]})\n" if DEBUG;
$stream->timeout($self->inactivity_timeout);
$stream->on(close => sub { $self && $self->_close($id) });
$stream->on(error =>
sub { $self && $self->app->log->error(pop) && $self->_close($id) });
$stream->on(read => sub { $self->_read($id => pop) });
$stream->on(timeout =>
sub { $self->app->log->debug('Inactivity timeout.') if $c->{tx} });
}
);
return if $self->silent;
$self->app->log->info(qq{Listening at "$url".});
$query->params([]);
$url->host('127.0.0.1') if $url->host eq '*';
say "Server available at $url.";
}
sub _read {
my ($self, $id, $chunk) = @_;
# Make sure we have a transaction and parse chunk
return unless my $c = $self->{connections}{$id};
my $tx = $c->{tx} ||= $self->_build_tx($id, $c);
warn "-- Server <<< Client (@{[$tx->req->url->to_abs]})\n$chunk\n" if DEBUG;
$tx->server_read($chunk);
# Last keep-alive request or corrupted connection
$tx->res->headers->connection('close')
if (($c->{requests} || 0) >= $self->max_requests) || $tx->req->error;
# Finish or start writing
if ($tx->is_finished) { $self->_finish($id, $tx) }
elsif ($tx->is_writing) { $self->_write($id) }
}
sub _remove {
my ($self, $id) = @_;
$self->ioloop->remove($id);
$self->_close($id);
}
sub _write {
my ($self, $id) = @_;
# Get chunk and write
return unless my $c = $self->{connections}{$id};
return unless my $tx = $c->{tx};
return if !$tx->is_writing || $c->{writing}++;
my $chunk = $tx->server_write;
delete $c->{writing};
warn "-- Server >>> Client (@{[$tx->req->url->to_abs]})\n$chunk\n" if DEBUG;
my $stream = $self->ioloop->stream($id)->write($chunk);
# Finish or continue writing
weaken $self;
my $cb = sub { $self->_write($id) };
if ($tx->is_finished) {
if ($tx->has_subscribers('finish')) {
$cb = sub { $self->_finish($id, $tx) }
}
else {
$self->_finish($id, $tx);
return unless $c->{tx};
}
}
$stream->write('' => $cb);
}
1;
=encoding utf8
=head1 NAME
Mojo::Server::Daemon - Non-blocking I/O HTTP and WebSocket server
=head1 SYNOPSIS
use Mojo::Server::Daemon;
my $daemon = Mojo::Server::Daemon->new(listen => ['http://*:8080']);
$daemon->unsubscribe('request');
$daemon->on(request => sub {
my ($daemon, $tx) = @_;
# Request
my $method = $tx->req->method;
my $path = $tx->req->url->path;
# Response
$tx->res->code(200);
$tx->res->headers->content_type('text/plain');
$tx->res->body("$method request for $path!");
# Resume transaction
$tx->resume;
});
$daemon->run;
=head1 DESCRIPTION
L<Mojo::Server::Daemon> is a full featured, highly portable non-blocking I/O
HTTP and WebSocket server, with IPv6, TLS, Comet (long polling), keep-alive
and multiple event loop support.
For better scalability (epoll, kqueue) and to provide IPv6, SOCKS5 as well as
TLS support, the optional modules L<EV> (4.0+), L<IO::Socket::IP> (0.20+),
L<IO::Socket::Socks> (0.64+) and L<IO::Socket::SSL> (1.84+) will be used
automatically if they are installed. Individual features can also be disabled
with the C<MOJO_NO_IPV6>, C<MOJO_NO_SOCKS> and C<MOJO_NO_TLS> environment
variables.
See L<Mojolicious::Guides::Cookbook/"DEPLOYMENT"> for more.
=head1 EVENTS
L<Mojo::Server::Daemon> inherits all events from L<Mojo::Server>.
=head1 ATTRIBUTES
L<Mojo::Server::Daemon> inherits all attributes from L<Mojo::Server> and
implements the following new ones.
=head2 acceptors
my $acceptors = $daemon->acceptors;
$daemon = $daemon->acceptors([]);
Active acceptors.
=head2 backlog
my $backlog = $daemon->backlog;
$daemon = $daemon->backlog(128);
Listen backlog size, defaults to C<SOMAXCONN>.
=head2 inactivity_timeout
my $timeout = $daemon->inactivity_timeout;
$daemon = $daemon->inactivity_timeout(5);
Maximum amount of time in seconds a connection can be inactive before getting
closed, defaults to the value of the C<MOJO_INACTIVITY_TIMEOUT> environment
variable or C<15>. Setting the value to C<0> will allow connections to be
inactive indefinitely.
=head2 ioloop
my $loop = $daemon->ioloop;
$daemon = $daemon->ioloop(Mojo::IOLoop->new);
Event loop object to use for I/O operations, defaults to the global
L<Mojo::IOLoop> singleton.
=head2 listen
my $listen = $daemon->listen;
$daemon = $daemon->listen(['https://localhost:3000']);
List of one or more locations to listen on, defaults to the value of the
C<MOJO_LISTEN> environment variable or C<http://*:3000>.
# Listen on all IPv4 interfaces
$daemon->listen(['http://*:3000']);
# Listen on all IPv4 and IPv6 interfaces
$daemon->listen(['http://[::]:3000']);
# Listen on IPv6 interface
$daemon->listen(['http://[::1]:4000']);
# Listen on IPv4 and IPv6 interfaces
$daemon->listen(['http://127.0.0.1:3000', 'http://[::1]:3000']);
# Allow multiple servers to use the same port (SO_REUSEPORT)
$daemon->listen(['http://*:8080?reuse=1']);
# Listen on two ports with HTTP and HTTPS at the same time
$daemon->listen([qw(http://*:3000 https://*:4000)]);
# Use a custom certificate and key
$daemon->listen(['https://*:3000?cert=/x/server.crt&key=/y/server.key']);
# Or even a custom certificate authority
$daemon->listen(
['https://*:3000?cert=/x/server.crt&key=/y/server.key&ca=/z/ca.crt']);
These parameters are currently available:
=over 2
=item ca
ca=/etc/tls/ca.crt
Path to TLS certificate authority file.
=item cert
cert=/etc/tls/server.crt
Path to the TLS cert file, defaults to a built-in test certificate.
=item ciphers
ciphers=AES128-GCM-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH
Cipher specification string.
=item key
key=/etc/tls/server.key
Path to the TLS key file, defaults to a built-in test key.
=item reuse
reuse=1
Allow multiple servers to use the same port with the C<SO_REUSEPORT> socket
option.
=item verify
verify=0x00
TLS verification mode, defaults to C<0x03>.
=back
=head2 max_clients
my $max = $daemon->max_clients;
$daemon = $daemon->max_clients(1000);
Maximum number of concurrent client connections, passed along to
L<Mojo::IOLoop/"max_connections">.
=head2 max_requests
my $max = $daemon->max_requests;
$daemon = $daemon->max_requests(100);
Maximum number of keep-alive requests per connection, defaults to C<25>.
=head2 silent
my $bool = $daemon->silent;
$daemon = $daemon->silent($bool);
Disable console messages.
=head1 METHODS
L<Mojo::Server::Daemon> inherits all methods from L<Mojo::Server> and
implements the following new ones.
=head2 run
$daemon->run;
Run server.
=head2 start
$daemon = $daemon->start;
Start accepting connections.
# Listen on random port
my $id = $daemon->listen(['http://127.0.0.1'])->start->acceptors->[0];
my $port = $daemon->ioloop->acceptor($id)->handle->sockport;
=head2 stop
$daemon = $daemon->stop;
Stop accepting connections.
=head1 DEBUGGING
You can set the C<MOJO_DAEMON_DEBUG> environment variable to get some advanced
diagnostics information printed to C<STDERR>.
MOJO_DAEMON_DEBUG=1
=head1 SEE ALSO
L<Mojolicious>, L<Mojolicious::Guides>, L<http://mojolicio.us>.
=cut
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