http2

This is a quick guide to help out those trying to install an NON-RELEASE version of apache. It was made due to intermittent crashes of apache 2.4.25 with HTTP2 on CentOS with DirectAdmin.

You can see the changelog here:

https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/CHANGES

Here is the DirectAdmin discussion this was first reported on:

https://forum.directadmin.com/showthread.php?t=52590&page=3

Anyhow...

Here's the fix:

Install OpenSSL with ALPN support

cd /usr/local/src/
wget ftp://ftp.openssl.org/source/openssl-1.0.2j.tar.gz
tar xzf openssl-1.0.2j.tar.gz
cd openssl-1.0.2j
./config --prefix=/usr/local/lib_http2 no-ssl2 no-ssl3 zlib-dynamic -fPIC
make depend
make install

Install nghttp2 - HTTP/2 Library

cd /usr/local/directadmin/custombuild
./build update
./build nghttp2

​Install HTTP/2 for Apache 2.x

cd /usr/local/directadmin/custombuild
mkdir -p custom/ap2
cp -p configure/ap2/configure.apache custom/ap2/configure.apache
vi custom/ap2/configure.apache

### REPLACE "--with-ssl=/usr" \
### WITH:

        "--enable-http2" \
        "--enable-ssl-staticlib-deps" \
        "--with-ssl=/usr/local/lib_http2" \


### Rebuild apache

./build apache

### Add HTTP/2 settings to httpd-includes.conf