Upload stops when phone goes to sleep and not resuming

[boazin]

First of all awesome library.

I have an issue, I'm uploading a file with the following code:

[s3Manager putObjectWithFile:videoPath
                         destinationPath:destinationPath
                              parameters:nil
                                progress:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
                                    float fraction = (totalBytesWritten / (totalBytesExpectedToWrite * 1.0f));
                                    NSLog(@"%f Uploaded", fraction);
                                }
                                 success:^(AFAmazonS3ResponseObject *responseObject) {
                                     //success - do syuff


                                 }

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

Now the upload takes a long time (a video file), and the app can get into background mode.
When I look at the phone log, after the screen turns off - the % uploaded is getting updated for another 30 seconds or so and then just hangs.
When I get the app back to foreground - it is just stuck... Upload isn't continuing and no error indication.

How can I solve this?