NAME

Protocol::WebSocket - WebSocket protocol

SYNOPSIS

# Server side
my $hs = Protocol::WebSocket::Handshake::Server->new;

$hs->parse('some data from the client');

$hs->is_done; # tells us when handshake is done

my $frame = $hs->build_frame;

$frame->append('some data from the client');

while (defined(my $message = $frame->next)) {
    if ($frame->is_close) {

        # Send close frame back
        send(
            $hs->build_frame(
                type    => 'close',
                version => $version
            )->to_bytes
        );

        return;
    }

    # We got a message!
}

DESCRIPTION

Client/server WebSocket message and frame parser/constructor. This module does not provide a WebSocket server or client, but is made for using in http servers or clients to provide WebSocket support.

Protocol::WebSocket supports the following WebSocket protocol versions:

draft-ietf-hybi-17 (latest)
draft-ietf-hybi-10
draft-ietf-hybi-00 (with HAProxy support)
draft-hixie-75

By default the latest version is used. The WebSocket version is detected automatically on the server side. On the client side you have set a version attribute to an appropriate value.

Protocol::WebSocket itself does not contain any code and cannot be used directly. Instead the following modules should be used:

High-level modules

Protocol::WebSocket::Server

Server helper class.

Protocol::WebSocket::Client

Client helper class.

Low-level modules

Protocol::WebSocket::Handshake::Server

Server handshake parser and constructor.

Protocol::WebSocket::Handshake::Client

Client handshake parser and constructor.

Protocol::WebSocket::Frame

WebSocket frame parser and constructor.

Protocol::WebSocket::Request

Low level WebSocket request parser and constructor.

Protocol::WebSocket::Response

Low level WebSocket response parser and constructor.

Protocol::WebSocket::URL

Low level WebSocket url parser and constructor.

EXAMPLES

For examples on how to use Protocol::WebSocket with various event loops see examples/ directory in the distribution.

CREDITS

In order of appearance:

Paul "LeoNerd" Evans

Jon Gentle

Lee Aylward

Chia-liang Kao

Atomer Ju

Chuck Bredestege

Matthew Lien (BlueT)

Joao Orui

Toshio Ito (debug-ito)

Neil Bowers

Michal Špaček

Graham Ollis

Anton Petrusevich

Eric Wastl

Greg Kennedy

AUTHOR

Viacheslav Tykhanovskyi, vti@cpan.org.

COPYRIGHT

Copyright (C) 2010-2018, Viacheslav Tykhanovskyi.

This program is free software, you can redistribute it and/or modify it under the same terms as Perl 5.10.