Re: follow-up: discrepancy with POSIX

Andi Kleen
2007-09-19T17:57:22Z

On Wed, Sep 19, 2007 at 10:46:54AM -0700, Ulrich Drepper wrote:
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> Andi Kleen wrote:
> >> But the spec calls for a "null address" to be used and that's in my
> >> understanding something different from using AF_UNSPEC.
> >
> > memset(&sockaddr, 0, sizeof(sockaddr)) should give you AF_UNSPEC
>
> But the spec calls for <quote>null address for the protocol</quote>.
>
> That means the family for the null address is the same as the family of
> the socket.

Spec doesn't match traditional behaviour then. IPv4 0.0.0.0 is
traditionally an synonym for old style all broadcast (255.255.255.255)
on UDP/RAW and it's certainly possible to connect() to that.

-Andi