Artifact b693c1c35b5167ad7d5e1b9061e3d91861b98b5b:

• File portfwd.c — part of check-in [d6cbea6730] at 2004-06-20 12:07:38 on branch trunk — Add a configuration option for TCP keepalives (SO_KEEPALIVE), default off. No very good reason, but I've occasionally wanted to frob it to see if it makes any difference to problems I'm having, and it was easy. Tested that it does actually cause keepalives on Windows (with tcpdump); should also work on Unix. Not implemented on Mac (does nothing), but then neither is TCP_NODELAY. Quite a big checkin, much of which is adding `keepalive' alongside `nodelay' in network function calls. (user: jacob size: 14726)

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