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From: robin@csuchico.edu (Robin Goldstone)
Newsgroups: comp.sys.mac.comm
Subject: NCSA Telnet 2.3.2 control-c problem
Message-ID: <1990Jul03.143956.18838@csuchico.edu>
Date: 3 Jul 90 14:39:56 GMT
Sender: news@csuchico.edu (USENET)
Reply-To: robin@csuchico.edu (Robin Goldstone)
Organization: California State University, Chico
Lines: 30

NCSA Telnet 2.3 added a menu option called "Setup Keys..." under the
Session menu.  One of the fields under this option is called "Interrupt
Process" and it is set to ^C.  I have found that this is the cause of
a problem I have been having when telnetted to our VAX.  The problem is
that issuing a control-C "hangs" my telnet session.  If I blank out the 
Interrupt Process field, it eliminates the problem.  The 2.3 documentation
indicates that the values in the Setup Keys option can be configured via
config.tel but I cannot find a parameter in Ch. 8 that corresponds to this
option.  I need to find the config.tel option of I have to manually blank
out this field every time I open a new session.

On a related note, once I disable Interrupt Process and fix the hanging
problem, I go back to the behavior of Telnet 2.2, which is a very delayed
response to my control-C.  If I am listing a file to the screen and do a
control-C, it takes several (5+) seconds for the host to actually respond
and cancel the command.  On a serial connection to the VAX, control-c
is interpreted instantaneously.  The Telnet documentation indicates that
control commands are only interpreted between transmitted blocks and that
I can improve response to my control-C by setting block=low number in
config.tel.  I have set it to the minimum (100) but control-c responses
still take a long time.

Does anyone have any suggestions for me as to:
1) disabling Setup Keys option "Interrupt Process" via config.tel
2) improving response to control-C

Thanks.
Robin Goldstone,  Systems Software Specialist
California State University, Chico  Computing Services
robin@csuchico.edu