gistfile1.rb

require 'rubygems'
require 'rev/websocket'

$connections = []

class MyConnection < Rev::WebSocket
	def on_open
		puts "WebSocket opened"
		$connections << self
	end

	def on_message(data)
		puts "WebSocket data received: '#{data}'"

		# broadcast
		$connections.each do |c|
			c.send_message data
		end
	end

	def on_close
		puts "WebSocket closed"
		$connections.delete(self)
	end
end

host = '0.0.0.0'
port = ARGV[0] || 8080

server = Rev::WebSocketServer.new(host, port, MyConnection)
server.attach(Rev::Loop.default)

puts "start on #{host}:#{port}"

Rev::Loop.default.run