An Extensible Messaging and Presence Protocol (XMPP) Subprotocol for WebSocket

This RFC 7395 was published in 2014.

Abstract

This document defines a binding for the Extensible Messaging and Presence Protocol (XMPP) over a WebSocket transport layer.
A WebSocket binding for XMPP provides higher performance than the current HTTP binding for XMPP.

RFC 7395 introduction

To date, applications using the Extensible Messaging and Presence Protocol (XMPP) (see [RFC6120] and [RFC6121]) on the Web have made use of Bidirectional-streams Over Synchronous HTTP (BOSH) (see [XEP-0124] and [XEP-0206]), an XMPP binding to HTTP.
BOSH is based on the HTTP "long polling" technique, and it suffers from high transport overhead compared to XMPP's native binding to TCP.
In addition, there are a number of other known issues with long polling [RFC6202] that have an impact on BOSH-based systems.

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