extract_header_and_body

# File railties/lib/webrick_server.rb, line 141
    def extract_header_and_body(data)
      data.rewind
      data = data.read

      raw_header, body = *data.split(/^[\xd\xa]{2}/on, 2)
      header = WEBrick::HTTPUtils::parse_header(raw_header)
      
      return header, body
    end