table of contents
socket_broadcast(3) | Library Functions Manual | socket_broadcast(3) |
NAME¶
socket_broadcast - set UDP socket to broadcast modeSYNTAX¶
#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: ");