text_eventmachine.rb

require 'rubygems'
require 'eventmachine'
require 'evma_httpserver'

 class MyHttpServer < EM::Connection
   include EM::HttpServer

    def post_init
      super
      no_environment_strings
    end

   def process_http_request
     # the http request details are available via the following instance variables:
     #   @http_protocol
     #   @http_request_method
     #   @http_cookie
     #   @http_if_none_match
     #   @http_content_type
     #   @http_path_info
     #   @http_request_uri
     #   @http_query_string
     #   @http_post_content
     #   @http_headers
     response = EM::DelegatedHttpResponse.new(self)
     response.status = 200
     response.content_type 'text/plain'
     response.content = 'I am a stupid HTTP server!'
     response.keep_connection_open
     response.send_response
   end
 end

EM.epoll
EM.run{
   EM.start_server '0.0.0.0', 8080, MyHttpServer
 }