http://www.rfc-editor.org/rfc/rfc6708.txt
RFC 6708: Application-Layer Traffic Optimization (ALTO) Requirements, S. Kiesel, S. Previdi, M. Stiemerling, R. Woundy, Y. Yang2012-09-01T23:00:00-00:00This document enumerates requirements for specifying, assessing, or comparing protocols and implementations. This document is not an Internet Standards Track specification; it is published for informational purposes.