def getresp # :nodoc:
      @last_response = getmultiline
      @last_response_code = @last_response[0, 3]
      case @last_response_code
      when /\A[123]/
        return @last_response
      when /\A4/
        raise FTPTempError, @last_response
      when /\A5/
        raise FTPPermError, @last_response
      else
        raise FTPProtoError, @last_response
      end
    end
Recieves a response from the destination host.

Returns the response code or raises FTPTempError, FTPPermError, or
FTPProtoError