base64encoding works in 4.0, but not 3.2

[wheli]

Hey Guys,

I am trying to figure out why this line of code works when i have my active executable set to 4.0, but not 3.2:

NSString *authString = [[[NSString stringWithFormat:@"%@:%@", username, password] dataUsingEncoding:NSUTF8StringEncoding] base64Encoding];

It crashes on 3.2 and the console has this error:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSConcreteMutableData base64Encoding]: unrecognized selector sent to instance 0x4c28d20'

[wuf810]

Originally Posted by wheli

Hey Guys,

I am trying to figure out why this line of code works when i have my active executable set to 4.0, but not 3.2:

NSString *authString = [[[NSString stringWithFormat:@"%@:%@", username, password] dataUsingEncoding:NSUTF8StringEncoding] base64Encoding];

It crashes on 3.2 and the console has this error:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[NSConcreteMutableData base64Encoding]: unrecognized selector sent to instance 0x4c28d20'

There is no such thing as "base64Encoding". Why do you need this anyway - not sure what you are trying to do here? The string creation will work without it.

[wheli]

Originally Posted by wuf810

There is no such thing as "base64Encoding". Why do you need this anyway - not sure what you are trying to do here? The string creation will work without it.

Ummm....i may be mistaken, but I saw it somewhere and seems to work perfectly. Here is authString with it: YXBjOmFwYw== and authString without it: <6170633a 617063>

Those are the values printed to the console by NSLog(@"%@",authString)

I am using it within an web service application that i am writing to put base 64 encoded strings into a request.

[wheli]

I think this was the post that I was looking at when I first used the code:
Iphone UIWebView HTTP Basic Authentication | Wetware

I guess its possible that the base64encoding component is part of "NSData+Additions.h", but I still don't understand why it would work in 4.0 and not 3.2. Was there a base64encoding addition to NSData in 4.0?

[wheli]

anyone else have any other ideas on this one? I am kind of stumped at the moment. do you think that it's not worth worrying about since 4.x will be coming out for the iPad soon and I can just say that you need 4.x to run the app?

thanks. (sorry for the bump)

[wheli]

Hey Guys,

Still stuck on this one....
I'd rather not have to add extra classes to my application if I don't have to. Any thoughts/suggestions? I don't know what the best practice would be in this case. Has anyone implemented any base 64 encoding in their applications?

Thanks!

[TUX2K]

Yes I've implemented base64 in my apps, it work even on 4.1

I'm use the base64 implementation by Matt Gallagher Cocoa with Love: Base64 encoding options on the Mac and iPhone

[wheli]

Originally Posted by TUX2K

Yes I've implemented base64 in my apps, it work even on 4.1

I'm use the base64 implementation by Matt Gallagher Cocoa with Love: Base64 encoding options on the Mac and iPhone

Did it work with 3.x firmware? I'm not having problems with 4.x...

[wheli]

I finally figured it out. I was able to find the NSData+Additions.h class. It was deeply buried within the Colloquy source code. It's a pretty handy class....allows for base 64 encoding of your authentication string with two lines:

NSString *authString = [[[NSString stringWithFormat:@"%@:%@", username, password] dataUsingEncoding:NSUTF8StringEncoding] base64Encoding];
authString = [NSString stringWithFormat: @"Basic %@", authString];

Thanks to everyone for the help! If you're curious about the open source Colloquy project, you can check it out here: Development Guide ? Colloquy