NPN was the TLS extension used to negotiate SPDY (and, in transition, HTTP/2). During the standardization process, NPN was replaced with ALPN, published as RFC 7301 in July 2014. We intend to remove NPN at the same time as the SPDY removal.

Specification

Specification link


Specification being incubated in a Community Group

Status in Chromium

Blink


Removed (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

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Owners

Search tags

npn, tls, spdy,

Last updated on 2020-11-09