Hello all, I have few questions concerning the state/usage of rtnet:
Question 1: Is it currently possible to have a _realtime_ communication between rtnet/rtai host and another host, which has _different_ realtime OS (like rtems, qnx, vx works)? As I understand rtnet has a modified version of MAC (rtmac) and modified version of udp/ip. Then, I suppose I need also the equivalent stack implemented on second host (stack implementing the rtnet protocols)? Question 2: Now let's take the system with 2 rtnet/rtai hosts. As I see there is no "realtime-tcp" implemented and to guarantee the reliability one need to do this by himself. So the question is, whether there is already a light "user-level library" which would take care of resending, timeouts, sequencing etc? Are there any plans/agenda to implement a realtime tcp (or another reliable protocol)? Question 3: Are there any viable open-source hard realtime systems, preferably comparable with rtnet+rtai+linux and not being based on Linux and offering realtime networking? What about RTEMS? Question 4: This one is maybe more concerning rtai.. Is it really OK to write hard realtime c and c++ programs in user space? It used to be only possible to write the user apps as kernel modules with all the inconveniences. Recently I read that you can do hard realtime in user space and in c++. But how mature is it? Is it working so good (stability, maturity) as kernel + c ? Are there any constraints / problems from the side of rtnet if I want to write a c/c++ program in user space, using rtnet for communication? BTW, it's a nice piece of software! Thanx & regards, Piotr Serwa ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ RTnet-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/rtnet-users
