Socket Keep-awake Option?

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1 total messages Started by Gareth Howell Sun, 19 May 1991 04:44

#215

Author: Gareth Howell
Date: Sun, 19 May 1991 04:44

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Hi all,

Has anybody modified NOS to support this option on its sockets? It
sure would be useful sometimes.

As you all know, we have problems interacting with MSYS boxes, the
ability to probe the remote node to see if it is still there would
prevent a build up of sockets in FIN WAIT 2 as we get at present. I
know some tcp implementations have this, perhaps we could as well. It
would only need to probe about 1 per hour, just to detect that the
other end has either reset or died and come back up again.

Another time it would be useful is where SMTP sessions get stuck
because the other end has died.
Let's face it, in an amateur environment, end nodes do dissappear
temporarily occasionally; the ability to detect this, reset the
session, and restart the mail transfer at the next smtp timer
tick would increase overall system availability.

Gareth

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