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From Ryan Bloom <...@covalent.net>
Subject Re: [PATCH] sockets.c
Date Mon, 06 Aug 2001 22:15:34 GMT

I watched it fail on a FreeBSD machine.

For an example of code that uses a non-blocking accept:


http://www.cs.odu.edu/~cs779/stevens2nd/lib/connect_nonb.c


Ryan

On Monday 06 August 2001 14:48, Jeff Trawick wrote:
> Ryan Bloom <rbb@covalent.net> writes:
> > The problem is that the second connect() call is failing with an
> > EALREADYCONNECTED. The correct way to detect an error from connect,
> > according to Single Unix, is to do a poll or select.  If select/poll
> > return with an error or they timeout, the connect failed.  If they return
> > successfully, then the connect has succeeded.
>
> On what platform is it failing with EALREADYCONNECTED?  I can't
> readily reproduce this problem.  (not disagreeing, just would like to
> play with it myself)
>
> A patch to look for an error in a different manner must retrieve the
> saved error from TCP.  You gotta get the ECONNREFUSED or ENETUNREACH
> back to the app.
>
> (Actually, when I did this code I did look around for examples.
> I guess I looked at a bad one :) )
>
> By the way...  Stevens doesn't check for exception on the socket, just
> readability and writability, then he calls getsockopt(,SOL_SOCKET,
> SO_ERROR,) to retrieve the saved error from TCP.)

-- 

_____________________________________________________________________________
Ryan Bloom                        	rbb@apache.org
Covalent Technologies			rbb@covalent.net
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