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gistfile1.rb

require 'eventmachine'

class Request < EM::P::HeaderAndContentProtocol
  CRLF = "\r\n"

  def receive_request(headers, body)
    receive_full_request headers.join(CRLF) << CRLF*2 << body
  end
end

class Client < Request
  def receive_full_request(api_request)
    api_request.sub! /Host:.*/i, 'Host: api.github.com'
    EM.connect 'github.com', 443, Github, self, api_request
  end
end

class Github < Request
  def initialize(client, api_request)
    super()
    @client       = client
    @api_request  = api_request
  end

  def post_init
    start_tls
  end

  def ssl_handshake_completed
    send_data @api_request
  end

  def receive_full_request(github_response)
    @client.send_data github_response
    close_connection_after_writing
    @client.close_connection_after_writing
  end
end

EM.run do
  EM.start_server '0.0.0.0', ENV['PORT'], Client
end