}
  }

  private static String encode(String str) {
    return BaseEncoding.base64().encode(str.getBytes(UTF_8));
  }

  private static final Function<String, String> DECODE_FUNCTION =
      new Function<String, String>() {
        @Override
        public String apply(String input) {
          return new String(BaseEncoding.base64().decode(input), UTF_8);
        }
      };

	buf.WriteString(xxml.Header)
	if err := xxml.NewEncoder(&buf).Encode(response); err != nil {
		bugLogIf(GlobalContext, err)
		return nil
	}
	return buf.Bytes()
}

// Encodes the response headers into JSON format.
func encodeResponseJSON(response any) []byte {
	var bytesBuffer bytes.Buffer
	e := json.NewEncoder(&bytesBuffer)
	e.Encode(response)
	return bytesBuffer.Bytes()
}

// Write parts count

        public void encode_in(final NdrBuffer _dst) throws NdrException {
            this.handle.encode(_dst);
            _dst.enc_ndr_long(this.access_mask);
            this.sid.encode(_dst);
        }

        @Override
        public void decode_out(final NdrBuffer _src) throws NdrException {
            this.domain_handle.decode(_src);
            this.retval = _src.dec_ndr_long();
        }
    }

    /**

        public void encode_in(final NdrBuffer _dst) throws NdrException {
            handle.encode(_dst);
            _dst.enc_ndr_long(access_mask);
            sid.encode(_dst);
        }

        @Override
        public void decode_out(final NdrBuffer _src) throws NdrException {
            domain_handle.decode(_src);
            retval = _src.dec_ndr_long();
        }
    }

    /**

     */
    @Override
    public int size() {
        return this.len;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Encodable#encode(byte[], int)
     */
    @Override
    public int encode(final byte[] dst, final int dstIndex) {
        System.arraycopy(this.bytes, this.off, dst, dstIndex, this.len);
        return this.len;
    }

    /**
     * Encode the input parameters for this DCERPC message.
     * @param buf the buffer to encode into
     * @throws NdrException if encoding fails
     */
    public abstract void encode_in(NdrBuffer buf) throws NdrException;

    /**
     * Decode the output parameters from this DCERPC message.
     * @param buf the buffer to decode from
     * @throws NdrException if decoding fails

## Base64 vs Files { #base64-vs-files }

Consider first if you can use [Request Files](../tutorial/request-files.md) for uploading binary data and [Custom Response - FileResponse](./custom-response.md#fileresponse--fileresponse-) for sending binary data, instead of encoding it in JSON.

JSON can only contain UTF-8 encoded strings, so it can't contain raw bytes.

        /**
         * The low field of the clock sequence.
         */
        public byte clock_seq_low;
        /**
         * The spatially unique node identifier (6 bytes).
         */
        public byte[] node;

        @Override
        public void encode(NdrBuffer _dst) throws NdrException {
            _dst.align(4);
            _dst.enc_ndr_long(time_low);
            _dst.enc_ndr_short(time_mid);

        return transform;
    }

    /**
     * Encode to byte array for SMB2 READ/WRITE channel info
     *
     * @param dst destination buffer
     * @param dstIndex starting index
     * @return number of bytes written
     */
    public int encode(byte[] dst, int dstIndex) {
        return transform.encode(dst, dstIndex);
    }

    @Override
    public String toString() {

        when(mockInputData.encode(any(byte[].class), anyInt())).thenReturn(100);
        request.setInputData(mockInputData);
        byte[] buffer = new byte[1024];

        int written = request.writeBytesWireFormat(buffer, 0);

        assertTrue(written > 57);
        verify(mockInputData).encode(any(byte[].class), anyInt());
    }

    @Test