socket_broadcast − set UDP socket to broadcast mode
#include <libowfat/socket.h>
int socket_broadcast(int s);
socket_broadcast sets UDP socket s to broadcast mode. socket_send4 and socket_send6 will fail to send packets to the broadcast address unless socket_broadcast is called before.
Normally socket_broadcast returns 0.
If anything goes wrong, socket_broadcast returns -1, setting errno appropriately.
#include <libowfat/socket.h>
int s;
if
((s=socket_udp6())==-1)
strerr_die2sys(111,FATAL,"unable to create UDP socket:
");
if (socket_broadcast(s) == -1)
strerr_die2sys(111,FATAL,"unable to set broadcast mode:
");
socket_send4(3), socket_send6(3)