// TCP fallback only supports send/receive
        return EnumSet.of(RdmaCapability.RDMA_SEND_RECEIVE);
    }

    @Override
    public RdmaConnection createConnection(InetSocketAddress remote, InetSocketAddress local) throws IOException {
        return new TcpRdmaConnection(remote, local);
    }

    @Override

        }
    }

    @Override
    public Set<RdmaCapability> getSupportedCapabilities() {
        return EnumSet.allOf(RdmaCapability.class);
    }

    @Override
    public RdmaConnection createConnection(InetSocketAddress remote, InetSocketAddress local) throws IOException {
        ensureInitialized();
        return new DisniRdmaConnection(remote, local, endpointGroup);
    }

    @Override

     * @param local local socket address, may be null for auto-binding
     * @return new RDMA connection instance
     * @throws IOException if connection creation fails
     */
    RdmaConnection createConnection(InetSocketAddress remote, InetSocketAddress local) throws IOException;

    /**
     * Connect to a remote RDMA endpoint
     *
     * @param hostname remote hostname or IP address

    
    /**
     * Get supported RDMA capabilities
     */
    Set<RdmaCapability> getSupportedCapabilities();
    
    /**
     * Create RDMA connection to remote endpoint
     */
    RdmaConnection createConnection(InetSocketAddress remote, 
                                   InetSocketAddress local) throws IOException;
    
    /**
     * Register memory region for RDMA operations
     */

        // Use localhost for testing - should work with TCP fallback
        InetSocketAddress address = new InetSocketAddress("localhost", 12345);

        try (RdmaConnection connection = provider.createConnection(address, null)) {
            assertNotNull(connection, "Connection should not be null");
            assertEquals(address, connection.getRemoteAddress(), "Remote address should match");

    public void testCreateConnection() throws Exception {
        InetSocketAddress remote = new InetSocketAddress("localhost", 445);
        InetSocketAddress local = null;

        RdmaConnection connection = provider.createConnection(remote, local);
        assertNotNull(connection, "Connection should not be null");
        assertEquals(remote, connection.getRemoteAddress(), "Remote address should match");
    }

    @Test