throw new IOException("Connection not established");
        }

        try {
            // In real implementation, this would send using DiSNI:
            // DisniMemoryRegion disniRegion = (DisniMemoryRegion) region;
            // IbvSendWR sendWR = new IbvSendWR();
            // sendWR.setWr_id(System.nanoTime());
            // sendWR.setOpcode(IbvSendWR.IbvWrOpcode.IBV_WR_SEND.ordinal());

        }
    }
    
    @Override
    public void send(ByteBuffer data, RdmaMemoryRegion region) throws IOException {
        try {
            DisniMemoryRegion disniRegion = (DisniMemoryRegion) region;
            IbvSendWR sendWR = new IbvSendWR();
            sendWR.setWr_id(System.nanoTime());
            sendWR.setOpcode(IbvSendWR.IbvWrOpcode.IBV_WR_SEND.ordinal());