[HECnet] Third Release of Route20 User Mode DECnet Router

It would be good to know what the problem was. Regards Rob From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On Behalf Of Supratim Sanyal Sent: 11 October 2020 00:25 To: hecnet at update.uu.se Subject: Re: [HECnet] Third Release of Route20 User Mode DECnet Router This reminds me - I had ROUT20 on Hecnet for months - first on Linux then on FreeBSD - worked great with Bob Armstrong at the other end. I took it off due to reasons I do not remember fully - but was probably when Bob discovered something when we were trying DDCMP ... maybe Bob or Paul remembers more? --- Supratim Sanyal, W1XMT 39.19151 N, 77.23432 W QCOCAL::SANYAL via HECnet <http://www.update.uu.se/~bqt/hecnet.html> On Oct 10, 2020, at 5:55 PM, Rob Jarratt <robert.jarratt at ntlworld.com <mailto:robert.jarratt at ntlworld.com> > wrote: -----Original Message----- From: owner-hecnet at Update.UU.SE <mailto:owner-hecnet at Update.UU.SE> <owner-hecnet at Update.UU.SE <mailto:owner-hecnet at Update.UU.SE> > On Behalf Of Paul Koning Sent: 10 October 2020 21:51 To: hecnet at Update.UU.SE <mailto:hecnet at Update.UU.SE> Subject: Re: [HECnet] Third Release of Route20 User Mode DECnet Router On Oct 10, 2020, at 5:11 AM, Rob Jarratt <robert.jarratt at ntlworld.com <mailto:robert.jarratt at ntlworld.com> > wrote: Hello Everyone, As some of you may be aware, I have been writing my own DECnet router. Since the last formal release a few years ago I have added a few things, the details are here https://github.com/rjarratt/Route20. These were all on the Dev branch, which I know a few people have tried. I have been running the Dev branch for a long time myself, so I am sure it is stable. All I have done really is make the current Dev branch ?official? by merging it to the master branch. I know Paul has been much more active than me lately on this front, so I am probably a bit behind, but if anyone would like to take a look that would be great. I'll have to look at your work, have not done that in a long time. To be honest, I have never actually looked at PyDECnet! But I should again acknowledge that you have provided me with invaluable help and insight. My 2 cents worth: we're aiming at different things. I set out to build a full DECnet implementation in Python, with emphasis on supporting all the parts of the architecture in a very straightforward way. Efficiency was very much a secondary consideration. As it happens, the performance is not bad, adequate for a lot of purposes. A C based implement such as you did is somewhat harder to write, but much more efficient. For anyone who is running on a slow machine, or under heavy load, your work is likely to be the right answer. Also, of course, if you want to run on a machine where Python is not available or not efficient. My principal aim was to make it portable to as many machines as possible. Not only from a language point of view but also from a resources point of view. For both those reasons C is indeed a better language. So, yes, I think my implementation is likely to work on a wider range of machines. I have not written it to be particularly fast though, my implementation is quite na?ve in many respects, because I wanted to keep it simple. I do want to support more parts of DECnet, but time is the usual enemy here. Regards Rob