pingTCP80

int pingTCP(char *host)
{

        int sockfd,ping=0;
        struct hostent *hostent;
        struct sockaddr_in sockaddr_in;
        fd_set fdset;
        struct timeval tv;


        sockfd = socket(AF_INET, SOCK_STREAM, 6 );
        hostent = gethostbyname(host);
        sockaddr_in.sin_addr.s_addr = inet_addr(inet_ntoa(*(struct in_addr*)*(hostent->h_addr_list)));
        sockaddr_in.sin_family = AF_INET;
        sockaddr_in.sin_port = htons(80);

        fcntl(sockfd, F_SETFL, O_NONBLOCK);
        connect(sockfd, (struct sockaddr*)&sockaddr_in, sizeof(sockaddr_in));

        FD_ZERO(&fdset);
        FD_SET(sockfd, &fdset);
        tv.tv_sec = 0;             /* 0 second timeout */
        tv.tv_usec = 250*1000;     /* 250ms second timeout */

        if (select(sockfd + 1, NULL, &fdset, NULL, &tv) == 1)
        {
                int so_error;
                socklen_t len = sizeof so_error;
                getsockopt(sockfd, SOL_SOCKET, SO_ERROR, &so_error, &len);
                ping=1;
        }


        return ping;
}