final int start = bufferIndex;

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

        System.arraycopy(buffer, bufferIndex, this.serverGuid, 0, 16);
        bufferIndex += 16;

        this.securityMode = SMBUtil.readInt2(buffer, bufferIndex);
        this.dialect = SMBUtil.readInt2(buffer, bufferIndex + 2);
        bufferIndex += 4;

        return bufferIndex - start;

import com.google.errorprone.annotations.CanIgnoreReturnValue;
import java.io.DataInput;
import java.io.IOException;
import org.jspecify.annotations.Nullable;

/**
 * An extension of {@code DataInput} for reading from in-memory byte arrays; its methods offer
 * identical functionality but do not throw {@link IOException}.
 *
 * <p><b>Warning:</b> The caller is responsible for not attempting to read past the end of the

     * @return decoded transform
     */
    public static Smb2RdmaTransform decode(byte[] buffer, int bufferIndex) {
        long offset = SMBUtil.readInt8(buffer, bufferIndex);
        int token = SMBUtil.readInt4(buffer, bufferIndex + 8);
        int length = SMBUtil.readInt4(buffer, bufferIndex + 12);
        return new Smb2RdmaTransform(offset, token, length);
    }

        // Verify all fields in the buffer
        assertEquals(33, SMBUtil.readInt2(buffer, 64)); // Structure size
        assertEquals((byte) 0x02, buffer[66]); // Info type
        assertEquals((byte) 0x08, buffer[67]); // File info class
        assertEquals(64, SMBUtil.readInt4(buffer, 68)); // Buffer length
        assertEquals(0xABCDEF00, SMBUtil.readInt4(buffer, 76)); // Additional information

        // Verify file ID

        final int structureSize = SMBUtil.readInt2(buffer, bufferIndex);

        if (structureSize != 9) {
            throw new SMBProtocolDecodingException("Expected structureSize = 9");
        }

        final int bufferOffset = SMBUtil.readInt2(buffer, bufferIndex + 2) + getHeaderStart();
        bufferIndex += 4;
        final int bufferLength = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;

        int off = 0;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(65535, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0, SMBUtil.readInt2(buf, off));
        off += 2;
        assertEquals(0x12345678, SMBUtil.readInt4(buf, off));
        off += 4;
        assertEquals(blob.length, SMBUtil.readInt2(buf, off));
    }

        assertEquals(getField(cmd, "fid"), SMBUtil.readInt2(buffer, 0));
        assertEquals(getField(cmd, "typeOfLock"), buffer[2]);
        assertEquals(getField(cmd, "newOpLockLevel"), buffer[3]);
        assertEquals(getField(cmd, "timeout"), (long) SMBUtil.readInt4(buffer, 4));
        assertEquals(1, SMBUtil.readInt2(buffer, 8));
        assertEquals(1, SMBUtil.readInt2(buffer, 10));
    }

    /**

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

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

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

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

        }

        final short dataOffset = buffer[bufferIndex + 2];
        bufferIndex += 4;
        this.dataLength = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        this.dataRemaining = SMBUtil.readInt4(buffer, bufferIndex);
        bufferIndex += 4;
        bufferIndex += 4; // Reserved2

        final int dataStart = getHeaderStart() + dataOffset;

            throw new SMBProtocolDecodingException("Invalid compression context length: " + len);
        }

        int start = bufferIndex;

        // Read compression count
        int compressionCount = SMBUtil.readInt2(buffer, bufferIndex);
        bufferIndex += 2;

        // Validate compression count
        if (compressionCount < 0 || compressionCount > 16) {