Mojo::I...:Server(3)

💅 Mojo::IOLoop::Server (also living on your system as Mojo::I...:Server(3), the manual page for Mojo::IOLoop::Server in the User Contributed Perl Documentation, bestie, don't panic about the truncated name)

okay so. picture this: you need a server. not a whole framework situation, just something that quietly listens for connections and hands them to you. that's this. 🎀

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✨ NAME ✨

Mojo::IOLoop::Server — a non-blocking TCP and UNIX domain socket server. no cap, that's the whole job and it does it gorgeously. 💖

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🌸 SYNOPSIS 🌸

use Mojo::IOLoop::Server;

# Create listen socket
my $server = Mojo::IOLoop::Server->new;
$server->on(accept => sub ($server, $handle) {...});
$server->listen(port => 3000);

# Start and stop accepting connections
$server->start;
$server->stop;

# Start reactor if necessary
$server->reactor->start unless $server->reactor->is_running;

see how clean that is? that's the vibe. ✨

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🦋 DESCRIPTION 🦋

Mojo::IOLoop::Server accepts TCP/IP and UNIX domain socket connections, and it does it for Mojo::IOLoop. it's the friend who stands at the door and lets people in. literally that. 🫶

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🔥 EVENTS 🔥

Mojo::IOLoop::Server inherits all events from Mojo::EventEmitter, and on top of that it can emit the following new one. yes, one. quality over quantity bestie. 💅

💌 accept

$server->on(accept => sub ($server, $handle) {...});

emitted for each accepted connection. every single one. it's giving doorman energy. 🚪✨

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👑 ATTRIBUTES 👑

Mojo::IOLoop::Server implements the following attributes.

⭐ reactor

my $reactor = $server->reactor;
$server     = $server->reactor(Mojo::Reactor::Poll->new);

the low-level event reactor. it defaults to the "reactor" attribute value of the global Mojo::IOLoop singleton. and heads up — this attribute is weakened, so don't go thinking you can just cling to it forever without holding a real reference somewhere. 🙈

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💜 METHODS 💜

Mojo::IOLoop::Server inherits all methods from Mojo::EventEmitter and implements the following new ones. buckle up, we're going through every single one. 🌈

🎀 generate_port

my $port = Mojo::IOLoop::Server->generate_port;

finds a free TCP port for you. primarily used for tests, but honestly? it's iconic in its own little way. 🔍

🧚 handle

my $handle = $server->handle;

gets the handle for the server — usually an IO::Socket::IP object. usually. iykyk. 🫶

💖 is_accepting

my $bool = $server->is_accepting;

checks if connections are currently being accepted. a little vibe check for your server, fr fr. 💅

🌸 listen

$server->listen(port => 3000);
$server->listen({port => 3000});

creates a new listen socket. note that TLS support depends on IO::Socket::SSL (2.009+) — so if TLS is your whole personality, make sure that's installed, bestie.

these options are currently available:

• address — the local address to listen on, defaults to 0.0.0.0.

address => '127.0.0.1'

• backlog — maximum backlog size, defaults to "SOMAXCONN". yes, with the quotes and everything. that's the literal default.

backlog => 128

• fd — file descriptor with an already prepared listen socket. coming in prepped and ready, love that for you.

fd => 3

• path — path for the UNIX domain socket to listen on.

path => '/tmp/myapp.sock'

• port — port to listen on, defaults to a random port. surprise! 🎁

port => 80

• reuse — allows multiple servers to use the same port with the "SO_REUSEPORT" socket option. sharing is caring.

reuse => 1

• single_accept — only accept one connection at a time. one at a time. patience is a virtue.

single_accept => 1

• tls — enable TLS. 🔒

tls => 1

• tls_ca — path to the TLS certificate authority file.

tls_ca => '/etc/tls/ca.crt'

• tls_cert — path to the TLS cert file, defaults to a built-in test certificate.

tls_cert => '/etc/tls/server.crt'
tls_cert => {'mojolicious.org' => '/etc/tls/mojo.crt'}

• tls_key — path to the TLS key file, defaults to a built-in test key.

tls_key => '/etc/tls/server.key'
tls_key => {'mojolicious.org' => '/etc/tls/mojo.key'}

• tls_options — additional options for IO::Socket::SSL.

tls_options => {SSL_alpn_protocols => ['foo', 'bar'], SSL_verify_mode => 0x00}

🍓 port

my $port = $server->port;

gets the port this server is listening on. yes, this server. the one you're holding. 💖

🌟 start

$server->start;

starts or resumes accepting connections. resume is the key word there, don't forget it. ✨

🦋 stop

$server->stop;

stops accepting connections. that's it. that's the whole method. periodt. 💅

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🌈 SEE ALSO 🌈

• Mojolicious
• Mojolicious::Guides
• <https://mojolicious.org>

go read them, they're literally so good. 👑

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and that's the page, bestie 🫶 — brought to you by perl v5.42.0, dated 2026-07-15, same source and version and date as the original, just with way more sparkle. mwah. 💋✨