Deprecate and remove TLS Next Protocol Negotiation

Category: Network / Connectivity
Type: New or changed feature
Status: Removed (Chrome 51)
Intent stage: None

Summary

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.

Standards & signals

Specification: https://tools.ietf.org/html/draft-agl-tls-nextprotoneg-04
Firefox: No signal
Safari: No signal
Web developers: No signals
Tracking bug: https://crbug.com/587472

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