server.maxMpxCount = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        server.maxNumberVcs = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        server.maxBufferSize = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        server.maxRawSize = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        server.sessionKey = readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        final int start = bufferIndex;

        bufferIndex += 2; // reserved
        dataCompactionMode = readInt2(buffer, bufferIndex);
        bufferIndex += 4; // 2 reserved
        dataLength = readInt2(buffer, bufferIndex);
        bufferIndex += 2;
        dataOffset = readInt2(buffer, bufferIndex);
        bufferIndex += 12; // 10 reserved

        return bufferIndex - start;
    }

    @Override

        command = buffer[bufferIndex + CMD_OFFSET];
        errorCode = readInt4(buffer, bufferIndex + ERROR_CODE_OFFSET);
        flags = buffer[bufferIndex + FLAGS_OFFSET];
        flags2 = readInt2(buffer, bufferIndex + FLAGS_OFFSET + 1);
        tid = readInt2(buffer, bufferIndex + TID_OFFSET);
        pid = readInt2(buffer, bufferIndex + TID_OFFSET + 2);
        uid = readInt2(buffer, bufferIndex + TID_OFFSET + 4);

            throw new IOException("unexpected EOF reading netbios retarget session response");
        }
        final int addr = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        new NbtAddress(null, addr, false, NbtAddress.B_NODE);
        readInt2(buffer, bufferIndex);
        return this.length;
    }

            // Assert: message is meaningful
            assertEquals("Structure size is not 4", ex.getMessage());
        }

        @Test
        @DisplayName("Null buffer leads to NullPointerException from readInt2")
        void nullBuffer_throwsNPE() {
            // Arrange
            Smb2LogoffResponse resp = newResponse();

            // Act & Assert

        dst[dstIndex++] = (byte) (val >> 8 & 0xFF);
        dst[dstIndex] = (byte) (val & 0xFF);
    }

    static int readInt2(final byte[] src, final int srcIndex) {
        return ((src[srcIndex] & 0xFF) << 8) + (src[srcIndex + 1] & 0xFF);
    }

    static int readInt4(final byte[] src, final int srcIndex) {
        return ((src[srcIndex] & 0xFF) << 24) + ((src[srcIndex + 1] & 0xFF) << 16) + ((src[srcIndex + 2] & 0xFF) << 8)

            /*
             * these fields are common to all andx commands
             * so let's populate them here
             */

            andxCommand = buffer[bufferIndex];
            andxOffset = readInt2(buffer, bufferIndex + 2);

            if (andxOffset == 0) { /* Snap server workaround */
                andxCommand = (byte) 0xFF;
            }

            /*

            throw new IOException("unexpected EOF reading netbios retarget session response");
        }
        final int addr = readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        retargetAddress = new NbtAddress(null, addr, false, NbtAddress.B_NODE);
        int retargetPort = readInt2(buffer, bufferIndex);
        return length;
    }

    int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int readParameterWordsWireFormat(final byte[] buffer, final int bufferIndex) {
        count = readInt2(buffer, bufferIndex) & 0xFFFFL;
        return 8;
    }

    @Override
    int readBytesWireFormat(final byte[] buffer, final int bufferIndex) {
        return 0;
    }

    @Override

        bufferIndex += 4; // skip idFileSystem

        info.sectPerAlloc = readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        info.alloc = readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        info.free = readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        info.bytesPerSect = readInt2(buffer, bufferIndex);
        bufferIndex += 4;

        this.info = info;