new ByteProcessor<byte[]>() {
          int pos;

          @Override
          public boolean processBytes(byte[] buf, int off, int len) throws IOException {
            System.arraycopy(buf, off, processedBytes, pos, len);
            pos += len;
            return true;
          }

          @Override
          public byte[] getResult() {
            return processedBytes;
          }

        void testReadDataWireFormatWithOffset() {
            byte[] fullBuffer = new byte[200];
            byte[] dfsData = createValidDfsReferralBuffer();
            int offset = 50;
            System.arraycopy(dfsData, 0, fullBuffer, offset, dfsData.length);

            int bytesRead = response.readDataWireFormat(fullBuffer, offset, dfsData.length);

            assertTrue(bytesRead > 0);

        byte[] buffer = new byte[512];
        int headerStart = 0;
        int bodyStart = Smb2Constants.SMB2_HEADER_LENGTH;

        // Write SMB2 header (64 bytes)
        // Protocol ID
        System.arraycopy(new byte[] { (byte) 0xFE, 'S', 'M', 'B' }, 0, buffer, headerStart, 4);
        // Structure size (64)
        SMBUtil.writeInt2(64, buffer, headerStart + 4);
        // Credit charge

        }
        bufferIndex += 4;
        this.ctlCode = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        this.fileId = new byte[16];
        System.arraycopy(buffer, bufferIndex, this.fileId, 0, 16);
        bufferIndex += 16;

        final int inputOffset = SMBUtil.readInt4(buffer, bufferIndex) + getHeaderStart();
        bufferIndex += 4;

            }

            System.arraycopy(txn_buf, bufParameterOffset, dst, dstIndex, parameterCount);
            dstIndex += parameterCount;
        }

        if (dataCount > 0) {
            p = pad1;
            while (p-- > 0) {
                dst[dstIndex] = (byte) 0x00; // Pad1
                dstIndex++;
            }
            System.arraycopy(txn_buf, bufDataOffset, dst, dstIndex, dataCount);

        dstIndex += 2;

        SMBUtil.writeInt4(STRUCTURE_SIZE, dst, dstIndex); // DataLength
        dstIndex += 4;

        // Write context name
        System.arraycopy(CONTEXT_NAME_BYTES, 0, dst, dstIndex, 4);
        dstIndex += 4;

        // Padding to align data to 8-byte boundary
        dstIndex += 4;

        // Write durable handle V2 request data (32 bytes total)

        final int length = readUShort(src, index);
        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];
        System.arraycopy(src, offset, buffer, 0, length);
        return buffer;
    }

    static void writeULong(final byte[] dest, final int offset, final int ulong) {
        dest[offset] = (byte) (ulong & 0xff);

        final int length = readUShort(src, index);
        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];
        System.arraycopy(src, offset, buffer, 0, length);
        return buffer;
    }

    static void writeULong(final byte[] dest, final int offset, final int ulong) {
        dest[offset] = (byte) (ulong & 0xff);

            System.arraycopy(password, 0, dst, dstIndex, passwordLength);
            dstIndex += passwordLength;
        } else {
            // no password in tree connect
            dst[dstIndex++] = (byte) 0x00;
        }
        dstIndex += writeString(path, dst, dstIndex);
        try {
            System.arraycopy(service.getBytes("ASCII"), 0, dst, dstIndex, service.length());

            byte[] buffer = new byte[256];
            int offset = 100;
            byte[] responseData = createValidCopyChunkResponse(10, 131072, 1310720);
            System.arraycopy(responseData, 0, buffer, offset, responseData.length);

            int bytesDecoded = response.decode(buffer, offset, responseData.length);

            assertEquals(12, bytesDecoded);