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Re: receiving and sending packets to 255.255.255.255
On 13 Dec, 2011, at 12:10 , Edgar Fuß wrote:
> Two questions regarding the all-ones aka limited-broadcast aka
> INADDR_BROADCAST address:
> 1. Is ist true/documented that I only receive broadcasts directed to that
> address if I listen on INADDR_ANY aka 0.0.0.0?
> 2. When I want to send to that address, how do I specify the interface to
> send on (or network to send to)? I thought that was determined by address the
> sending socket was bound to, but that seems not to be true.
For 2. try the IP_MULTICAST_IF socket option. I think sending to
works the same as sending to 220.127.116.11 (or, at least, it should work the same
way because it is the same problem).
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