Python 3.4's http.server large download connections are cut prematurely

The issue is not present neither on Windows, nor on ReactOS Python 2.7

==== Steps to reproduce ====

1. Install Python 3.4.4
2. Obtain large file (over 500 MB. For example, Windows XP ISO) and place it inside ReactOS
3. cmd -> cd <path/to/large/file's/directory>
4. python -m http.server 8000
5. From another host, attempt to download the file at `http://<reactOS_IP>:8000/largefile` (ideally with Firefox, as on error, Chrome immediately tries to redownload the file without letting the user know)
6. Observe the connection being cut at around 50% mark (different files fail at different points, for example, Windows XP ISO of size 617.756.672 bytes , failed at 308.879.360 bytes. Interestingly, Python 3.4 does not (appear) to show any problems,
   

Optionally: Retry with Python 2.7 - observe no such issue