#include <stdio.h>
#include <stdbool.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define IFACE "igb1"

int main(int argc, char **argv)
{
        int sockfd;
        uint8_t buf[1024];
        struct sockaddr_in serveraddr;
        struct sockaddr_in clientaddr;
        struct ip_mreq mreq;

        system("ifconfig " IFACE " 192.168.1.55/24 up");

        sleep(2);

        inet_aton("239.0.0.5", &(mreq.imr_multiaddr));
        inet_aton("192.168.1.55", & mreq.imr_interface);

        sockfd = socket(AF_INET, SOCK_DGRAM, 0);

        if (sockfd < 0) {
                perror("Can't create socket");
                exit(EXIT_FAILURE);
        }

        bzero((char *)&serveraddr, sizeof(serveraddr));
        serveraddr.sin_family = AF_INET;
        inet_aton("192.168.1.55", &serveraddr.sin_addr);
        serveraddr.sin_port = htons(40960);

        if (bind(sockfd, (struct sockaddr *)&serveraddr,
                                sizeof(serveraddr)) < 0) {
                perror("can't bind");
                exit(EXIT_FAILURE);
        }

        for (int i = 0; i < 2; i++) {

                printf("Add membership\n");
                setsockopt(sockfd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
                sleep(2);
                system("ifmcstat -i " IFACE " -f inet");
#if 1
                printf("Drop membership\n");
                setsockopt(sockfd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq));
                sleep(2);
                system("ifmcstat -i " IFACE " -f inet");
#endif
        }
        exit(EXIT_SUCCESS);
}