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Issue metadata

Status: Fixed
Closed: Jul 2016
EstimatedDays: ----
NextAction: ----
OS: All
Pri: 2
Type: Launch-OWP
Launch-Accessibility: ----
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Launch-Leadership: ----
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Launch-M-Approved: ----
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Launch-Privacy: ----
Launch-Security: ----
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Issue 587472: Deprecate and remove NPN

Reported by, Feb 17 2016 Project Member

Issue description

(See for an overview)

OWP launch-tracking version of  issue #526713 .

Change description:
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.

Changes to API surface:
We'll no longer offer the NPN extension as part of TLS handshakes. Sites using NPN to negotiate SPDY or HTTP/2 will fall back to HTTP/1.1 at a loss in performance but not functionality.

Public standards discussion:

Support in other browsers:
Internet Explorer:

*Make sure to fill in any labels with a -?, including all OSes this change
affects. Feel free to leave other labels at the defaults.

Comment 1 by, Feb 17 2016

Summary: Deprecate and remove NPN (was: Deprecate NPN)

Comment 2 by, Jun 28 2016

Blockedon: 624096

Comment 3 by, Jul 11 2016

Blockedon: -624096
Status: Fixed (was: Assigned)
NPN functionality is disabled, concluding this launch bug.   Issue 526713  tracks further effort to clean up NPN-related, now dead, code.

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