Always getting back cached data in NSURLSessionDataTask
ios, json, nsurlconnection, nsurlsession
Solution
I've found the issue, I don't know why this has changed, because I never had to set that property before. Anyway I set `configuration.URLCache = NULL;` and now everthing works fine again.
Problem
I'm facing a very strange issue when using `NSURLSessionDataTask` to post a JSON request to the server. The first request goes through and I receive the correct JSON response, when I do a second request I'm getting always back the old response and the server never receives the request. Even if I turn on airplane mode the `NSURLSessionDataTask` does work an I get back the old response again. That's the code I'm using: ``` - (void)getJSONFromURL:(NSURL*)url identifierCode:(NSInteger)code { NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration]; NSURLSession *session = [NSURLSession sessionWithConfiguration:configuration]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; [request addValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; [request addValue:@"application/json" forHTTPHeaderField:@"Accept"]; [request addValue:[DataController sharedInstance].currentUser.userToken forHTTPHeaderField:@"User-Token"]; [request setHTTPMethod:@"GET"]; if (![SVProgressHUD isVisible]) [SVProgressHUD show]; NSURLSessionDataTask *postTask = [session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error){ NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)response; NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil]; [self handleResponse:httpResponse withJSON:json identifierCode:code]; dispatch_async(dispatch_get_main_queue(), ^{ [SVProgressHUD dismiss]; }); }]; [postTask resume]; ``` }