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From: jordan@ucbarpa.Berkeley.EDU (Jordan Hayes)
Newsgroups: comp.unix.wizards,comp.bugs.4bsd
Subject: Re: What mode should `whois' be?
Message-ID: <16550@ucbvax.BERKELEY.EDU>
Date: Sun, 7-Dec-86 02:36:06 EST
Article-I.D.: ucbvax.16550
Posted: Sun Dec  7 02:36:06 1986
Date-Received: Sun, 7-Dec-86 07:07:28 EST
References: <782@smeagol.UUCP> <4657@mimsy.UUCP>
Sender: usenet@ucbvax.BERKELEY.EDU
Reply-To: jordan@ucbarpa.Berkeley.EDU (Jordan Hayes)
Organization: University of California, Berkeley
Lines: 30
Keywords: BSD  whois
Xref: mnetor comp.unix.wizards:277 comp.bugs.4bsd:63

Steve D. Miller <steve@mimsy.UUCP> writes:

	struct sockaddr sin;

	sin.sin_family = AF_INET;
	if (bind(&sin, sizeof(sin)) < 0) ...

[ I assume you mean bind(s, &sin, sizeof(sin)) since bind() takes 3
arguments ]

	It's not trying to bind to any particular port on the local
	machine; it just wants the kernel to pick one for it.
	Unfortunately, the kernel does so only if no address is
	specified (all-zeroes), and this is specifying a garbage
	address.

That's weird ... the 4.3 source says

	struct sockaddr_in	sin;

	sin.sin_family = hp->h_addrtype;
	if (bind(s,&sin, sizeof(sin)) < 0) ...

More portable, but still far from the point -- clients that talk to
Internet Services (I.e., those with RFC's) shouldn't bind the socket
locally -- the server should do that for you. You can't enforce the
protected ports across non-BSD systems. You certainly shouldn't try to
with whois ...

/jordan