https://app.knowbase.one/vault/rfc/docid/4338
RFC4037: Open Pluggable Edge Services (OPES) Callout Protocol (OCP) Core
Network Working Group A. Rousskov Request for Comments: 4037 The Measurement Factory Category: Standards Track March 2005 Open Pluggable Edge Services (OPES) Callout Protocol (OCP) Core Stat...