RFC 145

RFC 145: Initial Connection Protocol Control Commands ✨

Okay so the title block is literally giving everything 📜. This is RFC 145, called Initial Connection Protocol Control Commands 🎀. J. Postel wrote it from UCLA - NMC (NIC 6739), and it's dated 4 May 1971 🌸. It updates RFC 123 (Updates: 123) and obsoletes RFC 127 (Obsoletes: 127) 🦋, so if those numbers keep popping up, now you know what they're about.

Here's the tea ☕. This is Postel's own interpretation of the exchange between NCP's that you'd need to carry out the Initial Connection Protocol from RFC #123. The note also fixes an error that Eric Harslem of RAND pointed out 🙌.

Below is the whole exchange, server NCP on the left and user NCP on the right, exactly as it was drawn 🧚:

      Server NCP                      User NCP
      __________                      ________

      Listen for Connection L         RTS, U, L, l
                                                  A

      STR, L, U, 32                   ALL, l  , 1, 32
                                            A

      Send 32 bits of data
      in 1 message on link l
                            A

      (value is S)                    Receive 32 bits of data
                                      from link l  (value is S)
                                                 A

      CLS, L, U                       CLS, U, L

      STR, S+1, U+1, B                STR, U+1, S, B
                      s                             u

      RTS, S, U+1, l                  RTS, U, S+1, l
                    B                               C

      wait for connection             wait for connection
      ALL, l , m , b                  ALL, l , m , b
            B   B   B                       C   C   C

      data sent to link l             data sent on link l
                         C                               B

      data received on link           data received on link l
                           B                                 C

RFC 145               Initial Connection Protocol             4 May 1971


      l , l , and l , are links, m  and m  are messages allocations, b
       A   B       C              B      C                            B
      and b  are bit allocations, and all other symbols are defined in
           C
      RFC #123.

The closing notes are below, kept exactly as they appear in the original 🍓:

      [This RFC is also available in .PS and. PDF format.]

          [ This RFC was put into machine readable form for entry ]
               [ into the online RFC archives by Lorrie Shiota]

Okay that's the whole thing, bestie. Every symbol, letter, and line is still there, and Postel really laid it out like that 💅💜