From mboxrd@z Thu Jan 1 00:00:00 1970 From: lyndon@orthanc.ca (Lyndon Nerenberg) Date: Thu, 9 Mar 2017 18:09:47 -0800 Subject: [TUHS] Help request: uucp, mail on 4.2BSD In-Reply-To: <878D7FE6-A2F2-41E8-90CC-500B369F6EB4@orthanc.ca> References: <59797EE8-FAC3-4403-B9D1-109DA0CD5EB2@quintile.net> <878D7FE6-A2F2-41E8-90CC-500B369F6EB4@orthanc.ca> Message-ID: <68DD5665-BA7D-4995-9CE4-4EED65A5F862@orthanc.ca> > On Mar 9, 2017, at 6:04 PM, Lyndon Nerenberg wrote: > > >> On Mar 9, 2017, at 4:31 PM, Steve Simon wrote: >> >> Maybe its the same one, but I remeber a special UUCP protocol which had its >> MTU and timeouts carefully adjusted to get the best performance across X25. > > 'f' protocol. It encoded everything into printable ASCII characters to avoid triggering any PAD escape sequence. Performance wise, it might have been the first "steaming" protocol :-) All it was concerned about was 1) don't send anything that looks like a PAD escape sequence, 2) just send bytes at the link. The idea was that the PAD would flow control the session, so uucico just went into dumb mode and shovelled out the bytes. --lyndon