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From: smb@ulysses.homer.nj.att.com (Steven M. Bellovin)
Newsgroups: comp.unix.wizards
Subject: Re: My problem with fdopen and sockets........
Message-ID: <11238@ulysses.homer.nj.att.com>
Date: 19 Feb 89 15:42:40 GMT
References: <7937@netnews.upenn.edu> <9556@cit-vax.Caltech.Edu>
Distribution: na
Organization: AT&T Bell Laboratories, Murray Hill
Lines: 11

In article <9556@cit-vax.Caltech.Edu>, wen-king@cit-vax.Caltech.Edu (King Su) writes:
} Secondly, you do not need two sockets, you just need two FILEs.  You can
} apply fdopen on the same file twice.  You don't need to dup it either.
} For example:
} 
} in  = fdopen(soc,"r");
} out = fdopen(soc,"w");

That is not correct for System V; you do indeed need to do the dup().
Please note that I'm speaking empirically... (i.e., it broke on me
the other way.)