Basic Ruby Echo HTTP Server

http-server.rb

#!/usr/bin/ruby

# run like ./http-server.rb 8000

require 'webrick'

server = WEBrick::HTTPServer.new(:Port => ARGV.first)
server.mount_proc '/' do |req, res|
  puts req.header
  puts req.body
end

trap 'INT' do
  server.shutdown
end
server.start