Is it possible to get the progress of uploaded data?

[Dalinar651]

I am uploading a big file to aws s3 storage using sockets. In the meantime i want the user to show a progress bar of the uploaded data .

This is the code i am using. var file=File().openRead(); file.listen((bytes){ socket.emitWithAck('upload-to-s3',bytes,ack:(data){ },binary:true); });

[jumperchen]

Yes, you can use ack to simulate the progress when the callback of the ack is invoked.