@reiver ⊼ (Charles) 
An #oldInternet specification — so small that you can fit the whole thing in a single screenshot.
Its name is —
Quote of the Day Protocol
https://datatracker.ietf.org/doc/html/rfc865
⁂
The protocol is very trivial. I suspect a big reason why the specification even exists is — to reserve #tcpPort17 & #udpPort17 for this QotD protocol.
.
( #internet #port17
#messageOfTheDay #motd #quoteOfTheDay #quoteOfTheDayProtocol )
RFC 865: Quote of the Day Protocol
This RFC specifies a standard for the ARPA Internet community. Hosts on the ARPA Internet that choose to implement a Quote of the Day Protocol are expected to adopt and implement this standard. The Quote of the Day service simply sends a short message without regard to the input.