What is difference between NSURLSessionDataTask vs NSURLSessionDownloadTask

Question

In latest apple introduce new NSURLSession in replace of NSURLConnection, so in there are different task , so what is the difference between

Answer 1

We can get it from header files

/* * An NSURLSessionDataTask does not provide any additional * functionality over an NSURLSessionTask and its presence is merely * to provide lexical differentiation from download and upload tasks. */

@interface NSURLSessionDataTask : NSURLSessionTask
@end

/* * An NSURLSessionUploadTask does not currently provide any additional * functionality over an NSURLSessionDataTask. All delegate messages * that may be sent referencing an NSURLSessionDataTask equally apply * to NSURLSessionUploadTasks. */

@interface NSURLSessionUploadTask : NSURLSessionDataTask
@end

/* * NSURLSessionDownloadTask is a task that represents a download to * local storage. */

@interface NSURLSessionDownloadTask : NSURLSessionTask