UNIX for Advanced & Expert Users

int listenFd;
    int temp;
    int buf_size = 0;
    struct sockaddr_in sAddr;
    int enable = 1;
    struct ifreq ifr;

    /* setup listening socket */
    listenFd = socket(AF_INET, SOCK_STREAM, 0);
    if (setsockopt(listenFd, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
    {
       close (listenFd);
       return -1;
    }

    memset(&ifr, 0, sizeof(ifr));
    snprintf(ifr.ifr_name, sizeof(ifr.ifr_name), "eth0");
    ioctl(listenFd, SIOCGIFINDEX, &ifr);
    if (setsockopt(listenFd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, IFNAMSIZ) < 0)
    {
      close (listenFd);
      return -1;
    }

    /* Initialize the server address and bind to the required port */
    memset(&sAddr, 0, sizeof (struct sockaddr_in));
    sAddr.sin_family = AF_INET;
    sAddr.sin_addr.s_addr = htonl(INADDR_ANY);
    sAddr.sin_port = 8080;

    /* bind to the socket, */
    temp = bind(listenFd, (struct sockaddr*) &sAddr, sizeof (sAddr));
    if (temp < 0)
    {
      close (listenFd);
      return -1;
    }

    /* Set socket options to max buffer size */
    buf_size = REST_MAX_HTTP_BUFFER_LENGTH;
    temp = setsockopt(listenFd, SOL_SOCKET, SO_RCVBUF, &buf_size, sizeof(buf_size));
    if (temp < 0)
    {
      close (listenFd);
      return -1;
    }