This chapter’s project is a simple file sharing application. You may be familiar with the concept of file sharing from such applications as the (in)famous Napster (no longer downloadable in its original form), Gnutella (see
http://www.gnutellaforums.com for discussions about available clients), BitTorrent (available from
http://www.bittorrent.com), and many others. What you’ll be writing is in many ways similar to these, although quite a bit simpler.
The main technology you’ll use is XML-RPC. As mentioned in Chapter 15, this is a protocol for calling procedures (functions) remotely, possibly across a network. If you want, you can quite easily ...