<<On Tue, 13 Mar 2001 16:43:26 -0800, Lars Eggert <[EMAIL PROTECTED]> said:
> I'm considering changing this, so that a select-to-write on a UDP socket
> will block until queue space becomes available.
Impossible. The only way to find out whether a packet (or set of
packets, or a fragment of a packet) would be successfully enqueued is
to try it. Even then there's no guarantee that it will get sent.
(Actually, ``impossible'' is too strong -- we could restructure the
entire network stack to make it possible to speculatively send packets
just to support this change in select() semantics. It's merely
impractical.)
-GAWollman
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