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000300_news@newsmaster….columbia.edu _Sat Nov 14 12:37:35 1998.msg
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From: dastow@vcn.bc.ca (David Stow)
Newsgroups: comp.protocols.kermit.misc
Subject: Re: check tcp/ip
Date: 14 Nov 1998 17:27:23 GMT
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Thanks for the answers. I'm going to pester you with a related
question, but first let me explain what I want to do.
I use MS-Kermit 3.15 both for making (relatively) simple serial
connections and for making TCP/IP connections over a PPP link.
I use the same serial port and modem in each case, and until recently
I used the standard mscustom.ini file without trouble. The :NOTCP port
settings in this file matched those in the PPP initialization file.
I recently replaced my 16450 type UART with a 16550A, and when I
started MS-Kermit over the PPP link, I got a message that Kermit
couldn't make the connection to my host. I took a closer look at
the mscustom.ini file, and I suspected that I should make Kermit
skip over the commands (like set speed) that could reset the UART
while the PPP link was running. When I deleted the :NOTCP part of
the file and the "if fail forward :NOTCP" command, the TCP/IP
connection worked again.
My guess is that resetting the UART (to the same values that the
PPP program was using) caused a problem with the 16550A but not with
the 16450 because of the characters that might be lost from the
16550A's buffer during the reset. Does this sound right?
I want to have Kermit check when it starts to see whether the packet
driver is running, to set the port to tcp/ip and skip the UART
initialization if it finds the packet driver, and to set the UART
otherwise.
Can I use the tcpip_status variable to do this? I'm not sure I
understand the value of this variable. When I escape from a TCP/IP
session to the MS-Kermit prompt and give the show variables
command, \v(tcpip_status)=0. Is this like opening the refrigerator
door quickly to try to see if the light stays on when the door is closed?
David Stow