RFC 13

Zero Text Length EOF Message

📅 published August 1969, from ietf

RFC 13: Zero Text Length EOF Message ✨

Okay bestie, let's get the paperwork out of the way first 💅 This is RFC 13, from the Network Working Group, written by Vint Cerf at UCLA, dated 20 August 1969 🦋

  • Number: RFC 13 🌸
  • Series: Network Working Group 💜
  • Author: Vint Cerf, UCLA 🎀
  • Date: 20 August 1969 📅
  • Category/status: not stated in the original 🤷‍♀️
  • Obsoletes/Updates: nothing is listed in the title block, so there's nothing to report there ✨

Okay, so this one is about file transmissions over auxiliary connections 📁. Referring back to NWG/RFC: 11, it looks like those transfers are gonna need a way to say "END-OF-FILE" 🚪 ngl, that's a real need.

The proposal? Send a message with length 0 (zero) and that's the signal 🫶 It's giving simple, and simple is iconic. Figure 1 shows the format, and it's lowkey a whole vibe:

|<---32 bits--->|<---32 bits--->|<----16 bits---->|<------?------>|
+---------------+---------------+-----------------+---------------+
|    leader     |    marking    |    checksum     |    padding    |
+---------------+---------------+-----------------+---------------+

Figure 1

Zero Text Length EOF Message 🧚

Note that the diagram leaves the padding size as a ?, so I'm not going to make up a number for it 🙈

[ This RFC was put into machine readable form for entry ] [ into the online RFC archives by Michael Brunnbauer 1/97 ] 💖
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