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 the Security.framework
is linked, and "http" if the framework is not linked. I do know how to detect if the framework is linked.
This code works wonderfully if the URL has no parameters (such as "?param1=foo¶m2=bar"):
+(NSURL*)adjustURL:(NSURL*)inURL toSecureConnection:(BOOL)inUseSecure { if ( inUseSecure ) { return [[[NSURL alloc] initWithScheme:@"https" host:[inURL host] path:[inURL path]] autorelease]; } else { return [[[NSURL alloc] initWithScheme:@"http" host:[inURL host] path:[inURL path]] autorelease]; } }
But if the URL does have parameters, [inURL path]
drops them.
Any suggestions short of parsing the URL string myself (which I can do but I want to try not doing)? I do what to be able to pass URLs with either http or https to this method.
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;
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];
If you are using iOS 7 and later, you can use NSURLComponents
, as show here
NSURLComponents *components = [NSURLComponents new]; components.scheme = @"http"; components.host = @"joris.kluivers.nl"; components.path = @"/blog/2013/10/17/nsurlcomponents/"; NSURL *url = [components URL]; // url now equals: // http://joris.kluivers.nl/blog/2013/10/17/nsurlcomponents/
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With