EventMachine echo server

Edit: I am trying to find the public interface for event servers and connections.

---

We need the require 'rubygems' so that the interpreter will know to search the rubygems install paths. Apparently, module locations are not hard coded into the interpreter.

#!/usr/bin/env ruby                                                              
require 'rubygems'
require 'eventmachine'

port = ARGV[0].to_i
puts "PORT>>>#{port}<<<"

module Echo
  def receive_data(data)
    puts "RECV>>>#{data.chomp}<<<"
    send_data(data)
    puts "SEND>>>#{data.chomp}<<<"
    if data.downcase.chomp == 'quit'
      EM.next_tick { EM.stop }
    end
  end
end

EM.run do
  EM.start_server("0.0.0.0", port, Echo)
end

Single line socket puts

#!/usr/bin/env ruby
require 'socket'

send_msg = ARGV[1]
send_msg ||= "[nil msg]"
puts "MSG  >>>#{send_msg}<<<"
port = ARGV[0].to_i
puts "PORT >>>#{port}<<<"

TCPSocket.open("localhost", port) do |sk|
  sk.puts send_msg
  puts "SENT >>>#{send_msg}<<<"

  recv_msg = sk.gets
  puts "RECV >>>#{recv_msg.chomp}<<<"
end

Echo Socket (single thread, single connection)

#!/usr/bin/env ruby
require 'socket'
port = (ARGV[0] || 7777).to_i

TCPServer.open('localhost', port) do |svr|
  loop do #do-while loop
    sk = svr.accept

    input = sk.gets
    puts "RECV >>>#{input.chomp}<<<"
    sk.puts input
    puts "SENT >>>#{input.chomp}<<<"
    sk.close
    break if input.downcase.chomp == 'quit'
  end #end do-while loop
end

Documentation

I had to learn everything from the web. Bulky books are a problem for me.

Almost to low level API docs
http://www.ruby-doc.org/core-1.8.7/

Good "Programming Ruby" book
http://www.ruby-doc.org/docs/ProgrammingRuby/

EventMachine

Very Intro PDF
http://everburning.com/wp-content/uploads/2009/02/eventmachine_presentation.pdf

Better Intro PDF
http://everburning.com/wp-content/uploads/2009/02/eventmachine_introduction_10.pdf

Very Basic Tutorial
http://20bits.com/articles/an-eventmachine-tutorial/

Low Level API
http://eventmachine.rubyforge.org/