AFNetworking - get response content length

Question

I am using a simple AFNetworking [AFHTTPRequestOperation -initWithRequest:] for downloading file, I would like to check for the response header "content length" before I can actually download the file. How can I check for response content length in AFNetworking ?

Answer 1

Using expectedContentLength Property of NSURLResponse You can you can find length.

 AFHTTPRequestOperation *op = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [op setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
     {
         NSLog(@"Content-lent: %lld", [operation.response expectedContentLength]);

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        NSLog(@"Error: %@", error);
    }];