#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>

main(int argc, char* argv[]) {
	int sock, i, l, on;
	struct sockaddr_in addr, from;
	char buf[1024];	

	sock = socket(AF_INET, SOCK_DGRAM, 0);
	if (sock < 0) {
		perror("err creating socket:");
		exit(1);
	}
	on = 1;
	if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, &on, sizeof on) == -1) {
		perror("could not set SO_BROADCAST option:");
	}
	if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &on, sizeof on) == -1) {
		perror("could not set SO_REUSEADDR option:");
	}

	memset(&addr, 0, sizeof(struct sockaddr_in));
	addr.sin_family = AF_INET;
	addr.sin_port = htons(2345);
	addr.sin_addr.s_addr = htonl(INADDR_ANY);
	l = sizeof(struct sockaddr_in);

	if (bind(sock, (struct sockaddr *) &addr, sizeof(struct sockaddr_in)) == -1) {
		perror("error binding:");
	}

	i = recvfrom (sock, buf, sizeof(buf), 0, &from, &l);
	if (i < 0) perror("erroare la recv:");
	else {
		printf("am primit broadcast %d octeti [%s] !\n", i, buf);
		buf[i] = 0;
	}
}