}
    
    @Override
    public void connect() throws IOException {
        // Establish RDMA connection
        rdmaConnection.connect();
        
        // Perform RDMA negotiate
        performRdmaNegotiation();
        
        // Continue with SMB negotiate over RDMA
        super.connect();
    }
    
    private void performRdmaNegotiation() throws IOException {

            this.handle.decode(_src);
            this.retval = _src.dec_ndr_long();
        }
    }

    /**
     * SAMR Connect4 operation for establishing a connection to the SAM database.
     * This is an enhanced version of Connect2 with additional parameters.
     */
    public static class SamrConnect4 extends DcerpcMessage {

        @Override
        public int getOpnum() {

            handle.decode(_src);
            retval = _src.dec_ndr_long();
        }
    }

    /**
     * SAMR Connect4 operation for establishing a connection to the SAM database.
     * This is an enhanced version of Connect2 with additional parameters.
     */
    public static class SamrConnect4 extends DcerpcMessage {

        @Override
        public int getOpnum() {

            return transport.isSMB2();
        } catch (final SmbException e) {
            log.debug("Failed to connect for determining SMB2 support", e);
            return false;
        }
    }

    /**
     * @return whether this tree handle uses SMB3
     */
    public boolean isSMB3() {

    class SamrConnect2Tests {

        @Test
        @DisplayName("Should construct with correct parameters and opnum")
        void testConstructorAndOpnum() {
            // When: Creating connect2 message
            samr.SamrConnect2 message = new samr.SamrConnect2("system", 123, mockPolicyHandle);

            // Then: Should have correct values
            assertEquals(0x39, message.getOpnum());

    void ensureConnected_throwsIOException() throws Exception {
        doThrow(new java.io.IOException("connect failed")).when(transport).ensureConnected();
        java.io.IOException ex = assertThrows(java.io.IOException.class, () -> transport.ensureConnected());
        assertTrue(ex.getMessage().contains("connect"));
        verify(transport).ensureConnected();
    }

        this.setInstanceFollowRedirects(this.connection.getInstanceFollowRedirects());
    }

    @Override
    public void connect() throws IOException {
        if (this.connected) {
            return;
        }
        this.connection.connect();
        this.connected = true;
    }

    private void handshake() {
        if (this.handshakeComplete) {
            return;
        }
        try {

    }

    /**
     * Check if connection is established and ready for use
     *
     * @return true if connection is connected/established, false otherwise
     */
    public boolean isConnected() {
        return state == RdmaConnectionState.CONNECTED || state == RdmaConnectionState.ESTABLISHED;
    }

    /**
     * Read data from RDMA connection
     *

    class SamrConnect2Tests {

        @Test
        @DisplayName("Should construct with correct parameters and opnum")
        void testConstructorAndOpnum() {
            // When: Creating connect2 message
            samr.SamrConnect2 message = new samr.SamrConnect2("system", 123, mockPolicyHandle);

            // Then: Should have correct values
            assertEquals(0x39, message.getOpnum());

    protected static final String OIC_REDIRECT_URL = "oic.redirect.url";

    /** Configuration key for OpenID Connect token server URL. */
    protected static final String OIC_TOKEN_SERVER_URL = "oic.token.server.url";

    /** Configuration key for OpenID Connect client secret. */
    protected static final String OIC_CLIENT_SECRET = "oic.client.secret";