local host does not see broadcast on OS X

[Dar Scott]

On Wednesday, August 27, 2003, at 02:50 PM, Dar Scott wrote:

> I have a small sockets stack that listens on a UDP port (accept) and 
> sends datagrams to that port on an IP address.  If the address is 
> broadcast, the behavior is not consistent among platforms tested.  
> This applies whether the broadcast is general (255.255.255.255) or 
> subnet specific (for example, 10.99.255.255)
>
> If the local computer is included in the broadcast specification 
> (which it always is in the general broadcast), the datagram is 
> received on Windows XP and on Mac OS 9.2.  But it is not on OS X.

To clarify, a broadcast from Mac OS 9.2 or Windows XP shows up on OS X 
and a broadcast from OS X shows up on those.  So, OS X can send and 
receive broadcasts, but not to/from the same computer.  (Well, my tests 
are limited:  not from the same program on the same computer.)

Dar Scott
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