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.\" ========================================================================
.\"
.IX Title "Mojo::IOLoop::Server 3pm"
.TH Mojo::IOLoop::Server 3pm "2019-02-05" "perl v5.28.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Mojo::IOLoop::Server \- Non\-blocking TCP and UNIX domain socket server
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&  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;
\&
\&  # Start reactor if necessary
\&  $server\->reactor\->start unless $server\->reactor\->is_running;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Mojo::IOLoop::Server accepts \s-1TCP/IP\s0 and \s-1UNIX\s0 domain socket connections for
Mojo::IOLoop.
.SH "EVENTS"
.IX Header "EVENTS"
Mojo::IOLoop::Server inherits all events from Mojo::EventEmitter and can
emit the following new ones.
.SS "accept"
.IX Subsection "accept"
.Vb 4
\&  $server\->on(accept => sub {
\&    my ($server, $handle) = @_;
\&    ...
\&  });
.Ve
.PP
Emitted for each accepted connection.
.SH "ATTRIBUTES"
.IX Header "ATTRIBUTES"
Mojo::IOLoop::Server implements the following attributes.
.SS "reactor"
.IX Subsection "reactor"
.Vb 2
\&  my $reactor = $server\->reactor;
\&  $server     = $server\->reactor(Mojo::Reactor::Poll\->new);
.Ve
.PP
Low-level event reactor, defaults to the \f(CW\*(C`reactor\*(C'\fR attribute value of the
global Mojo::IOLoop singleton. Note that this attribute is weakened.
.SH "METHODS"
.IX Header "METHODS"
Mojo::IOLoop::Server inherits all methods from Mojo::EventEmitter and
implements the following new ones.
.SS "generate_port"
.IX Subsection "generate_port"
.Vb 1
\&  my $port = Mojo::IOLoop::Server\->generate_port;
.Ve
.PP
Find a free \s-1TCP\s0 port, primarily used for tests.
.SS "handle"
.IX Subsection "handle"
.Vb 1
\&  my $handle = $server\->handle;
.Ve
.PP
Get handle for server, usually an IO::Socket::IP object.
.SS "is_accepting"
.IX Subsection "is_accepting"
.Vb 1
\&  my $bool = $server\->is_accepting;
.Ve
.PP
Check if connections are currently being accepted.
.SS "listen"
.IX Subsection "listen"
.Vb 2
\&  $server\->listen(port => 3000);
\&  $server\->listen({port => 3000});
.Ve
.PP
Create a new listen socket. Note that \s-1TLS\s0 support depends on IO::Socket::SSL
(2.009+).
.PP
These options are currently available:
.IP "address" 2
.IX Item "address"
.Vb 1
\&  address => \*(Aq127.0.0.1\*(Aq
.Ve
.Sp
Local address to listen on, defaults to \f(CW0.0.0.0\fR.
.IP "backlog" 2
.IX Item "backlog"
.Vb 1
\&  backlog => 128
.Ve
.Sp
Maximum backlog size, defaults to \f(CW\*(C`SOMAXCONN\*(C'\fR.
.IP "fd" 2
.IX Item "fd"
.Vb 1
\&  fd => 3
.Ve
.Sp
File descriptor with an already prepared listen socket.
.IP "path" 2
.IX Item "path"
.Vb 1
\&  path => \*(Aq/tmp/myapp.sock\*(Aq
.Ve
.Sp
Path for \s-1UNIX\s0 domain socket to listen on.
.IP "port" 2
.IX Item "port"
.Vb 1
\&  port => 80
.Ve
.Sp
Port to listen on, defaults to a random port.
.IP "reuse" 2
.IX Item "reuse"
.Vb 1
\&  reuse => 1
.Ve
.Sp
Allow multiple servers to use the same port with the \f(CW\*(C`SO_REUSEPORT\*(C'\fR socket
option.
.IP "single_accept" 2
.IX Item "single_accept"
.Vb 1
\&  single_accept => 1
.Ve
.Sp
Only accept one connection at a time.
.IP "tls" 2
.IX Item "tls"
.Vb 1
\&  tls => 1
.Ve
.Sp
Enable \s-1TLS.\s0
.IP "tls_ca" 2
.IX Item "tls_ca"
.Vb 1
\&  tls_ca => \*(Aq/etc/tls/ca.crt\*(Aq
.Ve
.Sp
Path to \s-1TLS\s0 certificate authority file.
.IP "tls_cert" 2
.IX Item "tls_cert"
.Vb 2
\&  tls_cert => \*(Aq/etc/tls/server.crt\*(Aq
\&  tls_cert => {\*(Aqmojolicious.org\*(Aq => \*(Aq/etc/tls/mojo.crt\*(Aq}
.Ve
.Sp
Path to the \s-1TLS\s0 cert file, defaults to a built-in test certificate.
.IP "tls_ciphers" 2
.IX Item "tls_ciphers"
.Vb 1
\&  tls_ciphers => \*(AqAES128\-GCM\-SHA256:RC4:HIGH:!MD5:!aNULL:!EDH\*(Aq
.Ve
.Sp
\&\s-1TLS\s0 cipher specification string. For more information about the format see
<https://www.openssl.org/docs/manmaster/apps/ciphers.html#CIPHER\-STRINGS>.
.IP "tls_key" 2
.IX Item "tls_key"
.Vb 2
\&  tls_key => \*(Aq/etc/tls/server.key\*(Aq
\&  tls_key => {\*(Aqmojolicious.org\*(Aq => \*(Aq/etc/tls/mojo.key\*(Aq}
.Ve
.Sp
Path to the \s-1TLS\s0 key file, defaults to a built-in test key.
.IP "tls_protocols" 2
.IX Item "tls_protocols"
.Vb 1
\&  tls_protocols => [\*(Aqfoo\*(Aq, \*(Aqbar\*(Aq]
.Ve
.Sp
\&\s-1ALPN\s0 protocols to negotiate.
.IP "tls_verify" 2
.IX Item "tls_verify"
.Vb 1
\&  tls_verify => 0x00
.Ve
.Sp
\&\s-1TLS\s0 verification mode.
.IP "tls_version" 2
.IX Item "tls_version"
.Vb 1
\&  tls_version => \*(AqTLSv1_2\*(Aq
.Ve
.Sp
\&\s-1TLS\s0 protocol version.
.SS "port"
.IX Subsection "port"
.Vb 1
\&  my $port = $server\->port;
.Ve
.PP
Get port this server is listening on.
.SS "start"
.IX Subsection "start"
.Vb 1
\&  $server\->start;
.Ve
.PP
Start or resume accepting connections.
.SS "stop"
.IX Subsection "stop"
.Vb 1
\&  $server\->stop;
.Ve
.PP
Stop accepting connections.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Mojolicious, Mojolicious::Guides, <https://mojolicious.org>.