HTTP2 in Tomcat 9

Download native APR libraties from http://tomcat.apache.org/download-native.cgi

├── ca.crt
├── ca.key
└── tcnative
    ├── openssl
    │   ├── HashInfo.txt
    │   ├── libeay32.dll
    │   ├── OpenSSL License.txt
    │   ├── openssl.exe
    │   ├── ReadMe.txt
    │   └── ssleay32.dll
    ├── openssl.exe
    ├── tcnative-1.dll
    ├── tcnative-1-src.pdb
    └── x64
        ├── tcnative-1.dll
        └── tcnative-1-src.pdb

Generate a self-sigend certificate

openssl genrsa -out ca.key 4096
openssl req -new -x509 -days 1826 -key ca.key -out ca.crt

Comment out Connector and configure accordingly in server.xml

<Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol"
           maxThreads="150" SSLEnabled="true" >
    <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
    <SSLHostConfig honorCipherOrder="false">
        <Certificate certificateFile="certs\ca.crt"
         certificateKeyFile="certs\ca.key"
                     type="RSA" />
    </SSLHostConfig>
</Connector>

For Tomcat startup create setenv.bat:
set PATH=%PATH;C:\Tomcat\9.0.0.M22\certs\tcnative\x64;C:\Tomcat\9.0.0.M22\certs\openssl

In Eclipse set in Run Configurations:
-Djava.library.path="C:\asdf\tcnative\x64;${env_var:PATH}"