Question

I’m working with an API that returns a server’s IP address as an unsigned int value. What’s the simplest way to generate an NSString from this that displays the IP address in the format “255.255.255.255”?

Answer 1

I’ve used this in the past:

- (NSString *)ip
{
    unsigned int ip = //however you get the IP as unsigned int
    unsigned int part1, part2, part3, part4;

    part1 = ip/16777216;
    ip = ip%16777216;
    part2 = ip/65536;
    ip = ip%65536;
    part3 = ip/256;
    ip = ip%256;
    part4 = ip;

    NSString *fullIP = [NSString stringWithFormat:@"%d.%d.%d.%d", part1, part2, part3, part4];

    return fullIP;
}