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++;

    }

    @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++;

		return
	}
	err = en.WriteUint8(uint8(z.Type))
	if err != nil {
		err = msgp.WrapError(err, "Type")
		return
	}
	err = en.WriteUint8(uint8(z.Flags))
	if err != nil {
		err = msgp.WrapError(err, "Flags")
		return
	}
	err = en.WriteUint8(z.EcN)
	if err != nil {
		err = msgp.WrapError(err, "EcN")
		return
	}
	err = en.WriteUint8(z.EcM)
	if err != nil {

func (z LockResp) EncodeMsg(en *msgp.Writer) (err error) {
	// map header, size 2
	// write "Code"
	err = en.Append(0x82, 0xa4, 0x43, 0x6f, 0x64, 0x65)
	if err != nil {
		return
	}
	err = en.WriteUint8(uint8(z.Code))
	if err != nil {
		err = msgp.WrapError(err, "Code")
		return
	}
	// write "Err"
	err = en.Append(0xa3, 0x45, 0x72, 0x72)
	if err != nil {
		return
	}

            // 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 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);

        byte[] buffer = new byte[10];
        SMBUtil.writeInt2(0, buffer, 0);
        SMBUtil.writeInt2(0, buffer, 2);
        SMBUtil.writeInt2(TransPeekNamedPipeResponse.STATUS_CONNECTION_OK, buffer, 4);

        response.readParametersWireFormat(buffer, 0, 6);
        assertEquals(0, response.getAvailable());

        // Test maximum unsigned 16-bit value (65535)
        SMBUtil.writeInt2(0xFFFF, buffer, 0);

        // 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;