Mojo::WebSocket - The WebSocket protocol

1. SYNOPSIS
2. DESCRIPTION
3. FUNCTIONS
   1. build_frame
   2. challenge
   3. client_handshake
   4. parse_frame
   5. server_handshake
4. CONSTANTS
   1. WS_BINARY
   2. WS_CLOSE
   3. WS_CONTINUATION
   4. WS_PING
   5. WS_PONG
   6. WS_TEXT
5. DEBUGGING
6. SEE ALSO

SYNOPSIS

use Mojo::WebSocket qw(WS_TEXT build_frame parse_frame);

my $bytes = build_frame 0, 1, 0, 0, 0, WS_TEXT, 'Hello World!';
my $frame = parse_frame \$bytes, 262144;

DESCRIPTION

Mojo::WebSocket implements the WebSocket protocol as described in RFC 6455. Note that 64-bit frames require a Perl with support for quads or they are limited to 32-bit.

FUNCTIONS

Mojo::WebSocket implements the following functions, which can be imported individually.

build_frame

my $bytes = build_frame $masked, $fin, $rsv1, $rsv2, $rsv3, $op, $payload;

Build WebSocket frame.

# Masked binary frame with FIN bit and payload
say build_frame 1, 1, 0, 0, 0, WS_BINARY, 'Hello World!';

# Text frame with payload but without FIN bit
say build_frame 0, 0, 0, 0, 0, WS_TEXT, 'Hello ';

# Continuation frame with FIN bit and payload
say build_frame 0, 1, 0, 0, 0, WS_CONTINUATION, 'World!';

# Close frame with FIN bit and without payload
say build_frame 0, 1, 0, 0, 0, WS_CLOSE, '';

# Ping frame with FIN bit and payload
say build_frame 0, 1, 0, 0, 0, WS_PING, 'Test 123';

# Pong frame with FIN bit and payload
say build_frame 0, 1, 0, 0, 0, WS_PONG, 'Test 123';

challenge

my $bool = challenge Mojo::Transaction::WebSocket->new;

Check WebSocket handshake challenge.

client_handshake

my $tx = client_handshake Mojo::Transaction::HTTP->new;

Perform WebSocket handshake client-side.

parse_frame

my $frame = parse_frame \$bytes, $limit;

Parse WebSocket frame.

# Parse single frame and remove it from buffer
my $frame = parse_frame \$buffer, 262144;
say "FIN: $frame->[0]";
say "RSV1: $frame->[1]";
say "RSV2: $frame->[2]";
say "RSV3: $frame->[3]";
say "Opcode: $frame->[4]";
say "Payload: $frame->[5]";

server_handshake

my $tx = server_handshake Mojo::Transaction::HTTP->new;

Perform WebSocket handshake server-side.

CONSTANTS

Mojo::WebSocket implements the following constants, which can be imported individually.

WS_BINARY

Opcode for Binary frames.

WS_CLOSE

Opcode for Close frames.

WS_CONTINUATION

Opcode for Continuation frames.

WS_PING

Opcode for Ping frames.

WS_PONG

Opcode for Pong frames.

WS_TEXT

Opcode for Text frames.

DEBUGGING

You can set the MOJO_WEBSOCKET_DEBUG environment variable to get some advanced diagnostics information printed to STDERR.

MOJO_WEBSOCKET_DEBUG=1

SEE ALSO

Mojolicious, Mojolicious::Guides, https://mojolicious.org.