Add enet. Nice simple library that can be used as the basis for UDP communication, which is necessary (a) for STUN and (b) potentially to improve performance when it competes with other connections. Todo: Satisfy the license clause about including a copy of the license with all redistributions, as it is not included with binary redistributions. As far as I can tell, Dolphin currently ignores similar clauses in several source files, which should be fixed, and it doesn't seem like a good reason not to use a particular project.