evma_httpserver_realtime.rb

#!/usr/bin/env ruby
# Realtime push example using evma_httpserver's send_chunks
# It's taken from http://github.com/tobi/clarity

require 'eventmachine'
require 'evma_httpserver'

class Handler < EventMachine::Connection
  include EventMachine::HttpServer
  
  def process_http_request
    response = EventMachine::DelegatedHttpResponse.new( self )
    response.status = 200
    response.headers['Content-Type'] = 'text/html'
    response.chunk ' ' * 1024   # magic...
    response.chunk '<p>Hi!</p>'
    response.send_chunks
    @timer = EventMachine.add_periodic_timer(3) do
      puts "Ho!"
      response.chunk '<p>Hi!</p>'
      response.send_chunks
    end
  end
  
  def unbind
    @timer.cancel if @timer
  end
end

EventMachine::run do
  EventMachine.epoll
  EventMachine::start_server('0.0.0.0', 8080, Handler)
end