[SOLVED] Socket and Segmentation Fault.

[striker07]

Hello everyone.

I am programming an application with an ARM device with an embedded version of Linux. My application talks to a java application via socket. If there is any connection problems, it attempts the connection again. My problem is that after exactly 146 times, there is a Segmentation Fault. Apparently this happens in opening the socket, which is not successful after this amount of attempts.

Following, some code that I'm using:

The function for openning the socket and perform a connection:

int initConnection(char *host, int port)
{
    int fd, countError = 0, connected = -1;
    struct sockaddr_in destination;
    struct hostent *he;

    fd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (fd < 0)
    {
        printf("Socket error.\n");
        return -1;
    }

    he = gethostbyname(host);
    if (!he)
    {
        printf("DNS error.\n");
        return -1;
    }

    bzero(&destination, sizeof(destination));
    destino.sin_family = AF_INET;
    destino.sin_port = htons(port);
    destino.sin_addr = *((struct in_addr*) he->h_addr);

    while (connected < 0 && countError < 5)
    {
        connected = connect(fd, (struct sockaddr*) &destination, sizeof(destination));
        countError++;
    }

    if (countError == 5)
    {
        printf("Too many errors.\n");
        close(fd);
        fd = -1;
    }

    return fd;
}

and the problematic part:

.....
    while (true)
    {        
        error = false;
        readConfigParametersClient("/disk/home/httpd/cgi-bin/Pages/connSettings.dat", host, &port, user, pass);        
        
        fd = initConnection(host, port);
        if (fd < 0)
        {
            printf("Connection error.\n");
            continue;
        }
        counter++;
        .....

If someone can help me, thanks!
Sorry for the bad English, I'm brazilian.

[Rubberman]

Each time you go into initConnection() you create a new socked, yet when you exit on error you only close it on the 5th attempt, leaving 4 older sockets open/dangling. Your problem is that you can only have so many open sockets before the system refuses the socket() call.

[striker07]

Ok. I'll try to close the socket if connect() fail and post here success or error in it.