I liked reading the code for this - added a Star too. * Picking some RFCs and then writing a client/server is fun as a coding exercise. * I had a go at implem

I liked reading the code for this - added a Star too. * Picking some RFCs and then writing a client/server is fun as a coding exercise. * I had a go at implementing POP3 and HTTP years ago in a MUD / LPC, but HTTP has been done to death now. * Documentation is also really really good and I like the self-describing code, but have you thought about adding any unit tests i.e. for the algorithms?