RFC 8164 · HISTORIC · 2017
SUN · 14 JUN 2026
Opportunistic Security for HTTP/2
Overview
RFC 8164, “Opportunistic Security for HTTP/2”, is a Historic document published in May 2017 by M. Nottingham, M. Thomson. The canonical text is published by the RFC Editor.
Abstract
This document describes how "http" URIs can be accessed using Transport Layer Security (TLS) and HTTP/2 to mitigate pervasive monitoring attacks. This mechanism not a replacement for "https" URIs; it is vulnerable to active attacks.
What “Historic” means
A specification that has been superseded or is otherwise no longer recommended for use.
Read this RFC
The canonical text of RFC 8164 is hosted at rfc-editor.org. Available in TXT,HTML.
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