purge.rb

  def purge(ip, port, domain, uri)
    begin
      socket = TCPSocket.new(ip, port)
      socket.write "PURGE #{uri} HTTP/1.1\r\nX-Purge: #{uri}\r\nUser-Agent: ruby/socket\r\nAccept: */*\r\nHost: #{domain}\r\n\r\n"
    rescue Errno::ECONNREFUSED, Errno::ETIMEDOUT, Errno::EHOSTUNREACH
      # Nothing to do
    ensure
      socket.close if socket and !socket.closed?
    end
  end