RFC328

Network Working Group Jon Postel Request for Comments: 328 Computer Science

                                                  UCLA-NMC

NIC 9635 29 April 72 Categories: Telnet References: RFC 328

               Suggested Telnet Protocol Changes

I hereby propose the following changes to the Telnet protocol.  If

no substantial negative response is received by 15 May 72 it will be assumed that these changes are desired and should be incorporated in any "Official Telnet Protocol".

First I suggest that we drop the idea of a "minimum"

implementation and require a standard implementation which includes all aspects of the protocol.

Second I suggest that we eliminate the DATA TYPE signals.

Third I suggest that we do away with HIDE YOUR INPUT signal.

Arguments:

Standard Implementation:
     The idea of an accepted implementation which does not include
     whole protocol is an admission that the parts of the
     protocol left out are either not useful or not expected to be
     used, and that other mechanisms will be constructed to provide
     those functions.  Thus there should be no minimum
     implementation, but only the standard implementation which
     includes the whole protocol.

Data Types:
     The DATA TYPE signals are supposed to allow the communicating
     processes to switch from ASCII to some other code set.  However,
     the other code sets suggested do not allow for the Telnet
     signals, and thus once the switch is made the Telnet
     protocol is no longer applicable.  There is no way to specify
     how to get back to ASCII or Telnet thus the
     conversation is "out of control".

Hide Your Input:
     The HIDE YOUR INPUT signal is supposed to tell the user Telnet
     process to do whatever it can to hide the user's
     subsequent input.  One problem with this is determining
     how much input is to be hidden.  It is very difficult to find a
     method of hiding input which works for all combinations of
     systems and terminals, but the HIDE YOUR INPUT signal dosen't
     help in any real way.

   [ This RFC was put into machine readable form for entry ]
   [ into the online RFC archives by BBN Corp. under the   ]
   [ direction of Alex McKenzie.                   12/96   ]