[TUHS] Help request: uucp, mail on 4.2BSD

Lyndon Nerenberg lyndon at orthanc.ca
Fri Mar 10 12:09:47 AEST 2017


> On Mar 9, 2017, at 6:04 PM, Lyndon Nerenberg <lyndon at orthanc.ca> wrote:
> 
> 
>> On Mar 9, 2017, at 4:31 PM, Steve Simon <steve at quintile.net> 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



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