How can I cancel an asynchronous call through NSURLConnection sendAsynchronousRequest?

ios, ios5, iphone, nsurlconnection, objective-c

Solution

It doesn't appear that there is a good way to do this. The solution seems to be to not use the new `[NSURLConnection sendAsynchronousRequest]` in situations in which you need to cancel the request.

Problem

I've got a web service call performing some validation on user input in real time. I'd like to use `[NSURLConnection sendAsynchronousRequest]` on the validation (which was introduced in iOS 5), but cancel it if the user changes the input field content in the mean time. What is the best way to cancel a current request?

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