SMBUtil.writeInt2(this.totalParameterCount, dst, dstIndex);
        dstIndex += 2;
        SMBUtil.writeInt2(this.totalDataCount, dst, dstIndex);
        dstIndex += 2;
        if (this.getCommand() != SMB_COM_TRANSACTION_SECONDARY) {
            SMBUtil.writeInt2(this.maxParameterCount, dst, dstIndex);
            dstIndex += 2;
            SMBUtil.writeInt2(this.maxDataCount, dst, dstIndex);

    static final int MAX_MESSAGE_SIZE = 0x0001FFFF;
    static final int HEADER_LENGTH = 4;

    static void writeInt2(final int val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) (val >> 8 & 0xFF);
        dstIndex++;
        dst[dstIndex] = (byte) (val & 0xFF);
    }

    static void writeInt4(final int val, final byte[] dst, int dstIndex) {
        dst[dstIndex] = (byte) (val >> 24 & 0xFF);
        dstIndex++;

	for i := range w.buffer {
		delete(w.buffer, i)
	}
	w.wg.Wait()
	return err
}

type writerAt struct {
	w      *io.PipeWriter
	r      *io.PipeReader
	wg     *sync.WaitGroup
	buffer map[int64][]byte
	err    error

	nextOffset int64
	m          sync.Mutex
}

func (w *writerAt) WriteAt(b []byte, offset int64) (n int, err error) {
	w.m.Lock()
	defer w.m.Unlock()

    }

    @Override
    protected int writeSetupWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;
        SMBUtil.writeInt4(this.completionFilter, dst, dstIndex);
        dstIndex += 4;
        SMBUtil.writeInt2(this.fid, dst, dstIndex);
        dstIndex += 2;
        dst[dstIndex] = this.watchTree ? (byte) 0x01 : (byte) 0x00; // watchTree
        dstIndex++;

            // Given
            byte[] buffer = new byte[10];
            int bufferIndex = 0;
            SMBUtil.writeInt2(4, buffer, bufferIndex); // Write structure size = 4
            SMBUtil.writeInt2(0, buffer, bufferIndex + 2); // Reserved field

            // When
            int bytesRead = response.readBytesWireFormat(buffer, bufferIndex);

            // Then

        SMBUtil.writeInt2(3, buffer, 8);

        // Size (2 bytes) - the size of this referral entry
        SMBUtil.writeInt2(20, buffer, 10);

        // Server type (2 bytes)
        SMBUtil.writeInt2(1, buffer, 12);

        // Referral flags (2 bytes)
        SMBUtil.writeInt2(0, buffer, 14);

        // Proximity (2 bytes for v3)
        SMBUtil.writeInt2(0, buffer, 16);

        int dataOffset = offset + getStandardLeaseSize();
        
        // CacheScope (4 bytes)
        writeInt4(buffer, dataOffset, cacheScope.ordinal());
        dataOffset += 4;
        
        // MaxCacheAge (8 bytes)
        writeInt8(buffer, dataOffset, maxCacheAge);
        dataOffset += 8;
        
        // Flags (4 bytes)
        int flags = 0;

            int bufferIndex = 0;
            bufferIndex += 2; // reserved
            writeInt2(dataCompactionMode, buffer, bufferIndex);
            bufferIndex += 2;
            bufferIndex += 2; // reserved
            writeInt2(dataLength, buffer, bufferIndex);
            bufferIndex += 2;
            writeInt2(dataOffset, buffer, bufferIndex);
        }

        @Test

        buffer[bufferIndex + 2] = 0x00;

        SMBUtil.writeInt4(totalParams, buffer, bufferIndex + 3);
        SMBUtil.writeInt4(totalData, buffer, bufferIndex + 7);
        SMBUtil.writeInt4(paramCount, buffer, bufferIndex + 11);
        SMBUtil.writeInt4(paramOffset, buffer, bufferIndex + 15);
        SMBUtil.writeInt4(paramDisp, buffer, bufferIndex + 19);
        SMBUtil.writeInt4(dataCount, buffer, bufferIndex + 23);

        // totalParameterCount = 10
        writeInt4(10, buffer, bufferIndex);
        bufferIndex += 4;
        // totalDataCount = 20
        writeInt4(20, buffer, bufferIndex);
        bufferIndex += 4;
        // parameterCount = 5
        writeInt4(5, buffer, bufferIndex);
        bufferIndex += 4;
        // parameterOffset = 30
        writeInt4(30, buffer, bufferIndex);
        bufferIndex += 4;