1 * Properly encapsulate the mmap/span stuff.
2 * Track upload and download data.
3 * Emulate a UDP server in the UDP tracker tests.
4 * Make use of sparse file regions in download data for faster hashing.
5 * Add an alternative to mmap()'ed torrent data.
6 * If we're choked and interested, we never send not-interested if there's nothing we want?