HTTP/2 (HTTP/2.0) is the major upgrade over older version HTTP/1.1 protocol.HTTP/1 was released in 1997 and after a long time the HTTP/2 is released in 2015. HTTP/2 protocol is based on SPDY (generally known as speedy). Some of the key improvements of HTTP/2 are:
- Server push: Server will pro-actively sent components to clients, So clients doesn’t need to wait for sending requests to server.
- Multiplexing: Reducing number of active connection by bundling multiple HTTP requests from client and sent to server.
- Encryption: efficiently use to encryption with TLS protocol in HTTP/2 over HTTP/1.1.
- HTTP header compression: Compressed headers will reduce the overhead of additional requests to web server.
This article will help you to enable HTTP/2.0 in Apache web server on CentOS / Red Hat/ Debian and Ubuntu systems.
Install or Update Apache
HTTP/2 protocol supported over Apache version >=2.4.17. So make sure that your Apache version supporting HTTP/2 protocol. If you have not installed Apache or using older version upgrade it first. Use the following commands to add PPA for installing latest Apache2 version on your Ubuntu system.
$ sudo apt-get install python-software-properties $ sudo add-apt-repository ppa:ondrej/apache2 $ sudo apt-get update $ sudo apt-get install apache2
Verify Apache Version
After successful installation of Apache2 web server on your system, make sure you have Apache >=2.4.17, Earlier version does not supports HTTP/2 protocol.
$ apache2 -v Server version: Apache/2.4.17 (Ubuntu) Server built: 2015-11-05T00:00:00
Enable HTTP/2 in Apache
HTTP/2 protocol requires SSL/TLS virtual hosts. You can’t use HTTP/2 protocol without SSL/TLS enabled websites. Now edit your website VirtualHost and add
$ sudo a2enmod http2 $ sudo service apache2 restart
Now configure a VirtualHost with SSL for your domain and use following online tool for testing HTTP/2 support on your website.
Incomplete guide. You need to edit the virtual host file and then restart apache2.
Now edit your website VirtualHost and add http2 keyword in listen section.
What kind of instruction is this? it’s useless
Hi, Where we can write listen in Apache VirtualHost? I think listen is related to Nginx.
Thanks for the info….