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How to enable HTTP/2

LiteSpeed Web Server supports HTTP/2 out of the box since the introduction of Enterprise Version 5.0. HTTP/2 is enabled by default for the SSL listeners configured in httpd.conf and Web GUI. HTTP/2 can be customized via “SpdyEnabled” directive.

SPDY is also enabled by default since the introduction of Enterprise Version 5.0. However, if using a front-end SSL proxy server, enabling SPDY or HTTP/2 on LiteSpeed Web Server will have no effect, as front-end SSL proxies are not capable of forwarding SPDY and HTTP/2 requests.

Please note, HTTP/2 requires OpenSSL 1.0.2 as minimum. OpenSSL versions less than 1.0.2 will force HTTP/2 connections to HTTP/1.

Although HTTP/2 specification does not require TLS, TLS is required by browser implementations.

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  • Last modified: 2017/01/30 22:48
  • by Johathan Kagan