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How to Enable HTTP/2 on Your Web AppsJune 29, 2017

 

In this KB

  • Deployment of HTTP/2 in Cloudways

 

Cloudways Platform now supports HTTP/2 for SSL-enabled web applications. It is the first major upgrade to the HTTP1.1 protocol which has served the internet world for over 15 years.

HTTP/2 is optimized for the resource intensive websites of the current era. It provides faster performance, reduced response time, and improved SEO rankings. Multiplexing (multiple requests in a single TCP connection), stream priority (order of responses i.e. HTML, CSS, JavaScript, images, videos, etc.), and header compression are some of the unique techniques that are used in the HTTP/2.

Though HTTP/2 is designed to work with HTTP and HTTPS, most of the client web browsers only support it over SSL. That means TLS encryption (SSL) is mandatory for your web applications to get the benefits of HTTP/2.

Deployment of HTTP/2 in Cloudways

By default, HTTP/2 is enabled on all the servers deployed from 22 September 2016. It has to be enabled on all servers that have been deployed before 22 September. You can enable it from the Advanced tab of the Server Settings & Packages section. Once it is enabled, all your SSL-enabled websites hosted on the same server will start supporting HTTP/2.

HTTP/2 Settings

You can use any third party tool such as this one to verify if your server supports HTTP/2 or not.


Important 
Notes:

  • HTTP/2 is now fully supported and available for all browsers. Customers who already have HTTP/2 enabled in their servers, need to disable and re-enable it to update browser support.
  • HTTP/2 option can be enabled on a server-wide level. Once it is activated on a server, all the hosted SSL enabled web apps will use HTTP/2.
  • Opera Mini, UC Browser, and some Android browsers do not support HTTP/2. To check the complete list of supported and unsupported browsers, click here.
  • HTTP/2 is not going to work for browsers that are not supporting NPN/ALPN for HTTP/2. You will continue to access your websites on HTTP/1.1.
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Have Questions? Ask From Our Helpful Community

4 Responses

  1. Peter Knight says:

    With HTTP/2 enabled, does the server offer a fallback to the client if the client doesn’t support HTTP/2? In other words, do people using limited or older browsers still get proper access to a site?

    • Cloudways says:

      Any customer who’s browser doesn’t support HTTP/2, will keep using normal HTTP, so there shouldn’t be any problem.

      Cloudways Tean

  2. J England says:

    Is there any compatibility problems if I switch to HTTP 2 on my wordpress mu installation? Can I switch it back if it doesn’t suit?

    • Cloudways says:

      In general, there shouldn’t be but we can’t speak for all the plugin developers out there. And yes, you can enable and disable HTTP2 at a later stage if there are problems.

      Cloudways Team

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