valid = false;
    }

    @Override
    protected int generateLocalKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override
    protected int generateRemoteKey() {
        return keyGenerator.getAndIncrement();
    }

    @Override
    protected long getBufferAddress(ByteBuffer buffer) {
        // Return a fake address for TCP

        // In real implementation, this would get the local key from DiSNI:
        // return memoryRegister.getLkey();
        return keyGenerator.getAndIncrement();
    }

    @Override
    protected int generateRemoteKey() {
        // In real implementation, this would get the remote key from DiSNI:
        // return memoryRegister.getRkey();
        return keyGenerator.getAndIncrement();
    }

    @Override

    
    public RdmaMemoryRegion(ByteBuffer buffer, EnumSet<RdmaAccess> access) {
        this.buffer = buffer;
        this.accessFlags = access;
        this.localKey = generateLocalKey();
        this.remoteKey = generateRemoteKey();
        this.address = getBufferAddress(buffer);
        this.valid = true;
    }
    
    public ByteBuffer getBuffer() {
        if (!valid) throw new IllegalStateException("Memory region invalidated");