So you decided to add a WebDAV support into Apache on Directadmin server with Custombuild 2.x. Here you can find a basic guide on how to achieve it. First of all please keep in mind, that Apache is already built with WebDAV support if you install it with custombuild on a Directadmin server.
The current stable distribution of Debian is version 9, code named stretch. It was initially released as version 9 on June 17th, 2017 and its latest update, version 9.4, was released on March 10th, 2018. Do not try to install DirectAdmin version cleanly in any way on Debian 9.4. Because Direct Admin currently does not recognize this version.
This issue has been solved by DirectAdmin support.
HTTP/2 is the newest version of the HTTP protocol, based off SPDY. Its development was initiated by Google and HTTP/2 is largely based on the codebase and concepts of SPDY.
SPDY has now been deprecated and worldwide adoption for HTTP/2 is in progress. Many hosting companies have already provided support for HTTP/2 due to its added speed.
At the time of writing, DirectAdmin does not provide a one-click way to enable HTTP/2. However, there are multiple ways to achieve HTTP/2 support. The method outlined below has proven to be the most robust and stable approach.