liblo-devel Mailing List for LibLO

It was pointed out to me quite a while ago that for a proper multicast
capability it's necessary to be able to specify which network
interface a message should be sent through.

I have finally gotten around to implementing this (by necessity of
course ;)  and so I added a commit providing the new functions:

int lo_address_set_iface(lo_address t, const char *iface, const char *ip);
lo_address_get_iface(lo_address t);

It takes either a string describing the network name or a string
describing a local IP address, which it will search for the associated
network interface.  The main difficulty was making sure this works on
IPv6, so I spent time making sure it handled that, but if you happen
to use it let me know if you find any problems.

I didn't write an accompanying function to enumerate local interfaces,
because there is a POSIX function "if_nameindex" which does this in a
pretty straight-forward manner.

If this function is never called, the operating system will determine
a default network interface as before.

Steve