}

        try {
            // In real implementation, this would perform RDMA read into the buffer
            // For skeleton implementation, simulate reading the requested amount
            int bytesToRead = Math.min(length, buffer.remaining());

            // Simulate RDMA read operation
            log.debug("DiSNI RDMA read request: {} bytes from remote address 0x{}", bytesToRead, Long.toHexString(remoteAddress));

        byte[] src = new byte[10];
        int srcIndex = 0;

        // Simulate groupName = false (0x00), nodeType = 0 (0x00) -> src[srcIndex] = 0x00
        src[srcIndex] = (byte) 0x00;
        src[srcIndex + 1] = (byte) 0x00; // Reserved/padding byte

        // Simulate address = 192.168.1.1 (0xC0A80101)
        src[srcIndex + 2] = (byte) 0xC0;
        src[srcIndex + 3] = (byte) 0xA8;

import jcifs.CIFSException;
import jcifs.Configuration;
import jcifs.NameServiceClient;
import jcifs.smb.NtlmPasswordAuthentication;

/**
 * Tests for the NtlmServlet class.
 * This class uses Mockito to simulate a servlet environment and test authentication logic.
 */
@ExtendWith(MockitoExtension.class)
class NtlmServletTest {

    // A concrete implementation of the abstract NtlmServlet for testing purposes.

        protected int writeParameterWordsWireFormat(byte[] dst, int dstIndex) {
            paramWordsWritten = 10; // Simulate writing parameter words
            return paramWordsWritten;
        }

        @Override
        protected int writeBytesWireFormat(byte[] dst, int dstIndex) {
            bytesWritten = 20; // Simulate writing bytes
            return bytesWritten;
        }

        @Override

     * Test getting the domain SID.
     *
     * @throws SmbException if the SID string is invalid
     */
    @Test
    void testGetDomainSid() throws SmbException {
        // Create a mock RPC SID to simulate a user SID
        rpc.sid_t rpcSid = new rpc.sid_t();
        rpcSid.revision = 1;
        rpcSid.sub_authority_count = 5; // Fixed: should be 5 for domain SID with RID

        byte[] encodeBufferOut = new byte[1024];
        NdrBuffer dstOut = new NdrBuffer(encodeBufferOut, 0);

        // Simulate info pointer (non-null)
        dstOut.enc_ndr_long(1); // Non-null pointer for info
        info.encode(dstOut); // Encode the info structure

        // Simulate totalentries pointer (non-null)
        dstOut.enc_ndr_long(1); // Non-null pointer for totalentries

import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.Configuration;

/**
 * Integration tests for witness protocol implementation.
 * Uses mock services to simulate witness behavior.
 */
@ExtendWith(MockitoExtension.class)
public class WitnessIntegrationTest {

    @Mock
    private CIFSContext mockContext;

    @Mock
    private Configuration mockConfig;

        SmbTree tree = new SmbTree(session, "testShare", "testService");

        // Mock transport.connect() to succeed
        doNothing().when(transport).connect();

        // Simulate failed tree connect
        doThrow(new SmbException("Connection failed")).when(session).send(any(ServerMessageBlock.class), any(ServerMessageBlock.class));

        // Step 4: Initially no cached listing
        assertNull(directoryLeaseManager.getCachedDirectoryListing(directoryPath));

        // Step 5: Simulate directory enumeration and update cache
        List<SmbFile> files = Arrays.asList(mockFile1, mockFile2);
        directoryLeaseManager.updateDirectoryCache(directoryPath, files);

        int writeParameterWordsWireFormat(byte[] dst, int dstIndex) {
            paramWordsWritten = 10; // simulate write of 10 bytes of parameter words
            return paramWordsWritten;
        }

        @Override
        int writeBytesWireFormat(byte[] dst, int dstIndex) {
            bytesWritten = 20; // simulate 20 bytes of data
            return bytesWritten;
        }

        @Override