It is pretty amazing what we were able to accomplish in just one small chapter. The example that we built works much like any file sharing application that is out there today. We were able to easily combine APIs together to create a fully featured experience in just a few hundred lines of code. It even works efficiently and accounts for several things, such as slow networks and large files.

This is truly an example that you can expand upon and experiment with. There are plenty of ways to make this application much better to use. The first step could be printing out more information for the user to see, including what file they are sending and how large the file is. You can also give more information about the progress of the file and even the download speed. The user could also be given the chance to download the file whenever they want instead of immediately downloading the file right away, or even given the ability to input a file name to download it as.

The other drawback of our...