* for requests and the writeXxxWireFormat for responses are not implemented
     * and simply return 0. These would need to be completed for a server
     * implementation.
     */

    /** SMB2 negotiate protocol command */
    protected static final short SMB2_NEGOTIATE = 0x00;
    /** SMB2 session setup command */
    protected static final short SMB2_SESSION_SETUP = 0x01;
    /** SMB2 logoff command */

        boolean dfsStrictView = delegatingConfig.isDfsStrictView();

        // Then
        assertTrue(smb2Only, "Should delegate SMB2 only negotiation");
        assertFalse(secureNegotiate, "Should delegate secure negotiate requirement");
        assertTrue(ntlmTargetName, "Should delegate NTLM target name setting");
        assertFalse(port139Failover, "Should delegate port 139 failover setting");

                dc_list_expiration = 0;
            } while (retry-- > 0);

            dc_list_expiration = now + 1000 * 60 * 15; /* 15 min */
        }

        throw new UnknownHostException("Failed to negotiate with a suitable domain controller for " + DOMAIN);
    }

    /**
     * Retrieves the NTLM challenge from the specified domain controller.
     *
     * @param dc the domain controller address

            return false;
        }

        // MS-SMB2: Check if server advertised SMB2_GLOBAL_CAP_MULTI_CHANNEL (0x00000008)
        // This capability should be checked from the negotiate response
        // The server capabilities are typically stored in the session or transport

        // TODO: Integration point - check server capabilities

    /**
     * SMB command to disconnect from a tree share.
     */
    public static final byte SMB_COM_TREE_DISCONNECT = (byte) 0x71;

    /**
     * SMB command to negotiate protocol dialect.
     */
    public static final byte SMB_COM_NEGOTIATE = (byte) 0x72;

    /**
     * SMB command to setup a session with extended attributes.
     */