socket_broadcast(3) Library Functions Manual socket_broadcast(3)
NAME
socket_broadcast - set UDP socket to broadcast mode
SYNTAX
#include <socket.h>
int socket_broadcast(int s);
DESCRIPTION
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.
EXAMPLE
#include <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: ");
SEE ALSO
socket_send4(3), socket_send6(3)
socket_broadcast(3)
