how to broadcast ICMP(ping)

[dongzhe]

I have set socket like this

<code>
iResult=setsockopt(icmp_socket, SOL_SOCKET, SO_BROADCAST, (char *)&bBroadcast,sizeof(BOOL));

</code>

and

SendAddr.sin_family=AF_INET;
SendAddr.sin_port = htons(0);
SendAddr.sin_addr.s_addr=inet_addr(255.255.255.255);

I have no replys

Does anyone whatelse need to be set in order to broadcast icmp msg?