# File lib/snmp/pdu.rb, line 122
    def self.decode(pdu_class, pdu_data)
        request_id, remainder = decode_integer(pdu_data)
        error_status, remainder = decode_integer(remainder)
        error_index, remainder = decode_integer(remainder)
        varbind_list, remainder = VarBindList.decode(remainder)
        assert_no_remainder(remainder)
        pdu_class.new(request_id, varbind_list, error_status, error_index)
    end

# File lib/snmp/pdu.rb, line 155
    def initialize(request_id, varbind_list, error_status=0, error_index=0)
        @request_id = request_id
        self.error_status = error_status
        @error_index = error_index.to_int
        @varbind_list = varbind_list
    end

# File lib/snmp/pdu.rb, line 185
    def each_varbind(&block)
        @varbind_list.each(&block)
    end

# File lib/snmp/pdu.rb, line 177
    def encode_pdu(pdu_tag)
        pdu_data = encode_integer(@request_id)
        pdu_data << encode_integer(@error_status)
        pdu_data << encode_integer(@error_index)
        pdu_data << @varbind_list.encode
        encode_tlv(pdu_tag, pdu_data)
    end

# File lib/snmp/pdu.rb, line 173
    def error_status
        ERROR_STATUS_NAME[@error_status]
    end

# File lib/snmp/pdu.rb, line 162
    def error_status=(status)
        @error_status = ERROR_STATUS_CODE[status]
        unless @error_status
            if status.respond_to?(:to_int) && ERROR_STATUS_NAME[status.to_int]
                @error_status = status
            else
                raise InvalidErrorStatus, status.to_s
            end
        end
    end