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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>It would be good to know what the problem was.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Rob<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> owner-hecnet@Update.UU.SE <owner-hecnet@Update.UU.SE> <b>On Behalf Of </b>Supratim Sanyal<br><b>Sent:</b> 11 October 2020 00:25<br><b>To:</b> hecnet@update.uu.se<br><b>Subject:</b> Re: [HECnet] Third Release of Route20 User Mode DECnet Router<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>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?<o:p></o:p></p><div id=AppleMailSignature><div><div><p class=MsoNormal><br><br><o:p></o:p></p></div><div><p class=MsoNormal>---<o:p></o:p></p></div><div><p class=MsoNormal>Supratim Sanyal, W1XMT<o:p></o:p></p></div><div><p class=MsoNormal>39.19151 N, 77.23432 W<o:p></o:p></p></div><div><p class=MsoNormal>QCOCAL::SANYAL via <a href="http://www.update.uu.se/~bqt/hecnet.html">HECnet</a><o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On Oct 10, 2020, at 5:55 PM, Rob Jarratt <<a href="mailto:robert.jarratt@ntlworld.com">robert.jarratt@ntlworld.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><br><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>-----Original Message-----<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>From: <a href="mailto:owner-hecnet@Update.UU.SE">owner-hecnet@Update.UU.SE</a> <<a href="mailto:owner-hecnet@Update.UU.SE">owner-hecnet@Update.UU.SE</a>> On Behalf<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Of Paul Koning<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Sent: 10 October 2020 21:51<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>To: <a href="mailto:hecnet@Update.UU.SE">hecnet@Update.UU.SE</a><o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Subject: Re: [HECnet] Third Release of Route20 User Mode DECnet Router<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>On Oct 10, 2020, at 5:11 AM, Rob Jarratt <<a href="mailto:robert.jarratt@ntlworld.com">robert.jarratt@ntlworld.com</a>><o:p></o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>wrote:<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Hello Everyone,<o:p></o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>As some of you may be aware, I have been writing my own DECnet router.<o:p></o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>Since the last formal release a few years ago I have added a few things, the<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>details are here <a href="https://github.com/rjarratt/Route20">https://github.com/rjarratt/Route20</a>. These were all on the Dev<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>branch, which I know a few people have tried. I have been running the Dev<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>branch for a long time myself, so I am sure it is stable. All I have done really is<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>make the current Dev branch “official” by merging it to the master branch.<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>I know Paul has been much more active than me lately on this front, so I am<o:p></o:p></p></blockquote></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>probably a bit behind, but if anyone would like to take a look that would be<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>great.<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>I'll have to look at your work, have not done that in a long time.<o:p></o:p></p></blockquote><p class=MsoNormal><br>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.<br><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>My 2 cents worth: we're aiming at different things. I set out to build a full<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>DECnet implementation in Python, with emphasis on supporting all the parts of<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>the architecture in a very straightforward way. Efficiency was very much a<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>secondary consideration. As it happens, the performance is not bad, adequate<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>for a lot of purposes.<o:p></o:p></p></blockquote><p class=MsoNormal><br><br><br><o:p></o:p></p><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>A C based implement such as you did is somewhat harder to write, but much<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>more efficient. For anyone who is running on a slow machine, or under heavy<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>load, your work is likely to be the right answer. Also, of course, if you want to<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal>run on a machine where Python is not available or not efficient.<o:p></o:p></p></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><p class=MsoNormal><o:p> </o:p></p></blockquote><p class=MsoNormal style='margin-bottom:12.0pt'><br>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 naïve 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.<br><br>Regards<br><br>Rob<o:p></o:p></p></div></blockquote></div></div></body></html>