log.warn("Failed to pre-allocate receive buffer", e);
            }
        }

        log.info("Initialized RDMA buffer pool with {} send and {} receive buffers", availableSendRegions.size(),
                availableReceiveRegions.size());
    }

    /**
     * Get a send region from the pool or allocate a new one
     *
     * @param minSize minimum required size
     * @return memory region for sending

    server.send(message3)
    clientListener.assertTextMessage(message3)

    // Empty client to server message.
    val message4 = ""
    client.send(message4)
    serverListener.assertTextMessage(message4)

    // Server to client message that shares context with message1.
    val message5 = message1 + message1
    server.send(message5)
    clientListener.assertTextMessage(message5)

 * its incoming messages.
 *
 * ## Message Queue
 *
 * Messages enqueued with [send] are buffered in an outgoing message queue. This queue has a 16 MiB
 * limit. If a call to [send] would cause the queue to exceed this limit, the web socket will
 * initiate a graceful shutdown (close code 1001) and `send()` will return `false`. No exception is

# ----------------------------------------------------------
#                                                      Mail
#                                                     ------
# Does it send mock mail? (true: no send actually, logging only)
mail.send.mock = false

# SMTP server settings for main: host:port
mail.smtp.server.main.host.and.port = localhost:25

# The prefix of subject to show test environment or not

     *            authentication). If false and the user has not been authenticated yet
     *            the client will be forced to send an authentication (server sends
     *            HttpServletResponse.SC_UNAUTHORIZED).
     * @return True if the negotiation is complete, otherwise false
     * @throws IOException if an I/O error occurs

    }
    
    /**
     * Establish RDMA connection
     */
    public abstract void connect() throws IOException;
    
    /**
     * Send data using RDMA
     */
    public abstract void send(ByteBuffer data, RdmaMemoryRegion region) throws IOException;
    
    /**
     * Receive data using RDMA  
     */
    public abstract ByteBuffer receive(int timeout) throws IOException;

     * @param params
     * @return response
     * @throws CIFSException
     */
    public <T extends CommonServerMessageBlockResponse> T send(final jcifs.internal.Request<T> req, final RequestParam... params)
            throws CIFSException {
        return send(req, null, params);
    }

    /**
     * @param request
     * @param response
     * @param params
     * @return response

    /**
     * Get the value for the key 'mail.send.mock'. <br>
     * The value is, e.g. true <br>
     * comment: Does it send mock mail? (true: no send actually, logging only)
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getMailSendMock();

    /**
     * Is the property for the key 'mail.send.mock' true? <br>
     * The value is, e.g. true <br>

                    response.b[response.off] = 42; // Return byte value 42
                }
                return null;
            }
        }).when(smbFile).send(any(SmbComReadAndX.class), any(SmbComReadAndXResponse.class));

        int result = smbRandomAccessFile.read();
        assertEquals(42, result);
        assertEquals(1, smbRandomAccessFile.getFilePointer());
    }

     */
    public abstract void connect() throws IOException;

    /**
     * Send data using RDMA
     *
     * @param data data buffer to send
     * @param region registered memory region for the data
     * @throws IOException if send fails
     */
    public abstract void send(ByteBuffer data, RdmaMemoryRegion region) throws IOException;

    /**
     * Receive data using RDMA
     *