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: ");