"TCP/IP is not supported, because it is not real-time, and there is no clear way to force it to be real-time. If you don't believe me, feel free to try implementing TCP/IP yourself. If necessary, an unlimited quantity of you-can't-do-that hubris can be provided as encouragement."
[David Schleef, developer of the original RTnet, about 10 years ago, http://www.rtnet.org/download/original-rtnet-0.9.1.tgz] We are not claiming to have proven him completely wrong, but - as always - nothing is pure black or white. :) We are happy to announce the availability of basic but functional TCP support for RTnet! Check out latest git, switch on CONFIG_RTNET_RTIPV4_TCP, and maybe run the included examples. Just please do not expect that everything is as "shiny" as with full-blown TCP stacks. The primary use case are TCP clients under RT constraints, connecting to existing devices that only talk this language. We do support the server scenario nevertheless, but accept() behaves a bit differently and some corner cases may not yet work perfectly. Moreover, you have to tune your socket for sufficient packet buffers, specifically as you need to keep a temporary copy of each transmitted fragment around for the sake of retransmission on error. This is, BTW, limited to 3 tries so that the application is able to handle the error before its too late. Check out Documentation/README.tcp for more details. Lots of credits go to Vladimir who did the hard work of developing this complex beast from scratch. Thanks a lot! And I know at least one person outside Siemens is already waiting to try this out - so don't hesitate, we hope to hear your feedback. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
