socket_broadcast man page

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)

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