*/
    @Test
    @DisplayName("Pre-auth integrity hash should be thread-safe")
    void testPreauthHashThreadSafety() throws Exception {
        // Setup SMB3.1.1 negotiation
        when(negotiateResponse.getSelectedDialect()).thenReturn(DialectVersion.SMB311);
        when(negotiateResponse.getSelectedPreauthHash()).thenReturn(1); // SHA-512
        setPrivateField(transport, "smb2", true);

     */
    public final int getCommonCapabilities() {
        return this.commonCapabilities;
    }

    /**
     * Gets the initial security blob for authentication negotiation.
     *
     * @return initial security blob
     */
    public byte[] getSecurityBlob() {
        return this.securityBuffer;
    }

    /**

        // observed too that signatures on error responses are sometimes wrong??
        // Looks like the failure case also is just reflecting back the signature we sent

        // with SMB3's negotiation validation it's no longer possible to ignore this (on the validation response)
        // make sure that validation is performed in any case
        final Smb2SigningDigest dgst = getDigest();

    /** Extended attributes supported flag */
    int FLAGS2_EXTENDED_ATTRIBUTES = 0x0002;
    /** Security signatures supported flag */
    int FLAGS2_SECURITY_SIGNATURES = 0x0004;
    /** Extended security negotiation flag */
    int FLAGS2_EXTENDED_SECURITY_NEGOTIATION = 0x0800;
    /** Resolve paths in DFS flag */
    int FLAGS2_RESOLVE_PATHS_IN_DFS = 0x1000;
    /** Permit read if execute permission flag */

        response.getServerData().smaxMpxCount = 1;
        response.getServerData().maxBufferSize = 16384;

        assertTrue(response.isValid(mockContext, request));
        // After negotiation, check if unicode capability is preserved
        assertTrue((response.getNegotiatedCapabilities() & SmbConstants.CAP_UNICODE) != 0);
    }

    @Test
    public void testIsValidWithInvalidDialect() {

        RdmaNegotiateResponse response = rdmaConnection.negotiate(request);
        
        if (!response.isSuccess()) {
            throw new IOException("RDMA negotiation failed: " + response.getStatus());
        }
        
        // Update connection parameters based on negotiation
        credits.setCreditsGranted(response.getCreditsGranted());
        maxReadWriteSize = Math.min(maxReadWriteSize, response.getMaxReadWriteSize());

    public boolean canReuse(final CIFSContext tc, final boolean forceSigning) {
        return this.getConfig().equals(tc.getConfig());
    }

    /**
     * Returns the index of the selected SMB dialect from the negotiation.
     *
     * @return the dialectIndex
     */
    public int getDialectIndex() {
        return this.dialectIndex;
    }

    /**

        assertTrue(handle.isSMB2());

        reset(transport);
        when(session.getTransport()).thenReturn(transport);
        when(transport.isSMB2()).thenThrow(new SmbException("negotiation missing"));
        assertFalse(handle.isSMB2());
    }

    @Test
    @DisplayName("Null treeConnection throws NPE")
    void constructorNullTreeConnection() {

        void testSmb2HeaderLength() {
            assertEquals(64, Smb2Constants.SMB2_HEADER_LENGTH, "SMB2 header must be exactly 64 bytes");
        }
    }

    @Nested
    @DisplayName("Negotiation Constants")
    class NegotiationConstants {

        @Test
        @DisplayName("Signing enabled flag should be 0x0001")
        void testSigningEnabledFlag() {

    // we should try the next route (if there is one).
    if (e is InterruptedIOException) {
      return e is SocketTimeoutException && !requestSendStarted
    }

    // Look for known client-side or negotiation errors that are unlikely to be fixed by trying
    // again with a different route.
    if (e is SSLHandshakeException) {
      // If the problem was a CertificateException from the X509TrustManager,
      // do not retry.