Broadcast server implemented with Ruby

server.rb

require 'em-websocket'
require 'webrick'

EM.run {
  @clients = []

  EM::WebSocket.start(:host => '0.0.0.0', :port => '3001') do |ws|
    ws.onopen do |handshake|
      @clients.push ws
    end

    ws.onclose do
      @clients.delete ws
    end

    ws.onmessage do |msg|
      @clients.each do |socket|
        socket.send msg
      end
    end
  end

  Thread.new do
    WEBrick::HTTPServer.new(:Port => 3000, :DocumentRoot => './').start
  end
}