NSMutableURLRequest和重定向

因此,我尝试创建一个请求,该请求将在其过程中自动遵循重定向。由于某些原因,这不起作用,这就是我的委托方法的样子。我还需要做些什么才能正常工作吗?谢谢!

-(NSURLRequest *)connection:(NSURLConnection *)connection
        willSendRequest:(NSURLRequest *)request
       redirectResponse:(NSURLResponse*)redirectResponse {
NSLog(@"RedirectResponse:%@", [redirectResponse URL]);
NSLog(@"send request:%@", [request URL]);

NSHTTPCookieStorage *cookieDict = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSLog(@"CURRENT COOKIES: %@", [cookieDict cookies]);

/*NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse*)redirectResponse;
if ([redirectResponse respondsToSelector:@selector(allHeaderFields)]) {
    NSDictionary *dictionary = [httpResponse allHeaderFields];
    NSLog([dictionary description]);
}*/

NSURLRequest *newRequest=request; 
return newRequest;