XCP - the XML Control Protocol - is a drop in replacement for traditional Transmission Control Protocol, or TCP. XCP has many advantages, some of which are outlined in our rationale section. With the advent of XCP/IP, connection-oriented networking will finally move from the legacy environment of inscrutable bits and bytes to a structured, human-readable world relying upon XML. XCP is the first 4th Generation Protocol, or 4GP. It is designed for a networking environment that is very fast and very reliable - the Internet of today!