Adding userInfo to NSURLConnection

For a project I'm working on, I need to be doing several simultaneous plist uploads with an NSURLConnection, and it'd be neat to have a userInfo property to keep track of stuff.

I have:

// header
@interface NSURLConnection ()

@property (nonatomic, retain) id userInfo;

@end

// implementation
@implementation NSURLConnection ()

@synthesize userInfo = _userInfo;

@end

When I try to compile, it says it expects an identifier in the parens. When I give it 开发者_如何学编程an identifier, making it a category, it becomes incredibly offended that I want to synthesize in the category. When I remove the parens entirely, the worst nightmare occurs: it compiles. Unfortunately, NSURLConnection becomes ambiguous, with mine overwriting the real one. It's great at holding userInfo, but absolutely nothing else.

Has anyone successfully done this?

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You could try with alternative approach by considering inheriting your a class from NSURLConnection.

Here check the simple and alternative solution for (BROKEN LINK) adding state to NSURLConnection

EDIT: Link broken, here's a better one: http://web.archive.org/web/20110116033842/http://www.goosoftware.co.uk/blog/adding-state-to-nsurlconnection/

(Thanks, wjl)

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I asked this question in the context of iPhone OS 3. If you're targeting iOS 5 or above, you probably want to use +[NSURLConnection sendAsynchronousRequest:queue:completionHandler:] with blocks.