TCP problems

Conrad Scott Conrad.Scott@dsl.pipex.com
Mon Jul 29 12:31:00 GMT 2002


"Pierre A. Humblet" <Pierre.Humblet@ieee.org> wrote:
> Conrad Scott wrote:
> > Sorry: I should have been clearer there.  No: my test cygwin
> > server doesn't duplicate any of its sockets (AFAICT etc. but
I'm
> > pretty sure).
>
> Just to make sure I understand: it NEVER forks. Correct?

Never.  Ever ever.  Ever.  Not even once.

> > It's a really simple server: blocking accept,
> > read/write on the new file descriptor, then shutdown/close it
and
> > back to a blocking accept.  And it still hits the WASENOBUFS
wall
> > eventually (altho' it can be delayed by registry patches to
> > increase various TCP parameters).
>
> How long/how many accepts (more or less) is "eventually".

On my lovely little win98/SE box: one hundred connections minus a
few.

Nicholas Wourms (my (un)willing test accomplice) reported "~3
minutes" of run time before hitting the same error: so he's
getting a thousand or so (?) connections by the sounds of it.

// Conrad





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