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| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ======================================================================== |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
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| |
| [[alpn-chapter]] |
| == Application Layer Protocol Negotiation (ALPN) |
| |
| The development of new web protocols such as HTTP/2 raised the need of protocol negotiation within a Transport Layer Security (TLS) handshake. |
| A protocol negotiation called https://tools.ietf.org/html/rfc7301[ALPN] (Application Layer Protocol Negotiation) RFC7301 has been defined to accomplish this. |
| |
| ALPN has now replaced the older (and now fully deprecated) NPN in the general Web of 2016. |
| |
| For those browsers that support HTTP/2, they all now support the ALPN negotiation layers for TLS. |
| Starting with Jetty 9.3.0, only ALPN is supported by Jetty. |
| |
| include::alpn.adoc[] |
