Change a NSURL's scheme

Question

Is there an easy way to change the scheme of a NSURL? I do realize that NSURL is immutable. My goal is to change the scheme of an URL to \"https\" if t

Answer 1

Updated answer

NSURLComponents is your friend here. You can use it to swap out the http scheme for https. The only caveat is NSURLComponents uses RFC 3986 whereas NSURL uses the older RFCs 1738 and 1808, so there is some behavior differences in edge cases, but you're extremely unlikely to hit those cases (and NSURLComponents has the better behavior anyway).

NSURLComponents *components = [NSURLComponents componentsWithURL:url resolvingAgainstBaseURL:YES];
components.scheme = inUseSecure ? @"https" : @"http";
return components.URL;

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Original answer

Why not just do a bit of string manipulation?

NSString *str = [url absoluteString];
NSInteger colon = [str rangeOfString:@":"].location;
if (colon != NSNotFound) { // wtf how would it be missing
    str = [str substringFromIndex:colon]; // strip off existing scheme
    if (inUseSecure) {
        str = [@"https" stringByAppendingString:str];
    } else {
        str = [@"http" stringByAppendingString:str];
    }
}
return [NSURL URLWithString:str];