UDP Broadcast

iaccy — Tue, 23 Mar 2010 05:30:25 GMT

How does one set up a UDP socket to receive broadcast messages. I've managed to get multicast working but I need broadcast for NBNS.

Thanks

Re: UDP Broadcast

w2vy — Thu, 29 Oct 2020 09:36:22 GMT

iaccy wrote:
How does one set up a UDP socket to receive broadcast messages. I've managed to get multicast working but I need broadcast for NBNS.

Thanks

void ethernet_udp_init(void) {   struct sockaddr_in any;    udp_ethernet = socket(PF_INET, SOCK_DGRAM, 0); /* Bind the socket to the Browser port */ any.sin_family      = AF_INET; any.sin_port        = MY_PORT; any.sin_addr.s_addr = INADDR_ANY; bind(udp_ethernet, &any, sizeof(any));}

Try this and then you can read from it like this:

 sock_list[0] = udp_ethernet;   sock = RTCS_selectset(sock_list, 1, -1); // Check for activity, do not block (-1)   if (sock == 0) return;   rlen = sizeof(raddr);   memset(&raddr, 0, rlen);   len = recvfrom(sock, data, DATA_LEN, 0, &raddr, &rlen);

good luck

tom

topic Re: UDP Broadcast in MQX Software Solutions

UDP Broadcast

Re: UDP Broadcast