>there's one set of timeouts which the user should be allowed to tweak
>(within system-specified bounds): the "give up and close the
>connection" timeouts (initial connection, established connection, and
>the keepalive/makedead timeouts).
>
>note that these timeouts do not (directly) control when packets are
>transmitted, and thus have nothing to do with congestion control.

indeed!  i've often wished for the capability to tweak the keepalive
interval per connection to something shorter (or maybe longer) than
the default two (or is it four?) hours.

-- 
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