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Internet Engineering Task Force (IETF)                          I. Fette
Request for Comments: 6455                                  Google, Inc.
Category: Standards Track                                    A. Melnikov
ISSN: 2070-1721                                               Isode Ltd.
                                                           December 2011


                         The WebSocket Protocol

Abstract

   The WebSocket Protocol enables two-way communication between a client
   running untrusted code in a controlled environment to a remote host
   that has opted-in to communications from that code.  The security
   model used for this is the origin-based security model commonly used
   by web browsers.  The protocol consists of an opening handshake
   followed by basic message framing, layered over TCP.  The goal of
   this technology is to provide a mechanism for browser-based
   applications that need two-way communication with servers that does
   not rely on opening multiple HTTP connections (e.g., using
   XMLHttpRequest or