socket_broadcast - Man Page

set UDP socket to broadcast mode


#include <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 <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)