Provide end-to-end HTTP/2 proxy connection

LoadModule mpm_event_module modules/mod_mpm_event.so

LoadModule proxy_module modules/mod_proxy.so

LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule slotmem_shm_module modules/mod_slotmem_shm.so
LoadModule lbmethod_byrequests_module modules/mod_lbmethod_byrequests.so

LoadModule ssl_module modules/mod_ssl.so
LoadModule http2_module modules/mod_http2.so
LoadModule proxy_http2_module modules/mod_proxy_http2.so
LoadModule proxy_http_module modules/mod_proxy_http.so

Listen 9443
<VirtualHost _default_:9443>
    Protocols h2 h2c
    ProtocolsHonorOrder on

    ProxyPass "/" "balancer://mycluster" stickysession=JSESSIONID|jsessionid scolonpathdelim=On
    ProxyPassReverse "/" "https://localhost:9443"
    <Proxy "balancer://mycluster">
       BalancerMember "h2://127.0.0.1:8081" route=node1
       BalancerMember "h2://127.0.0.1:8082" route=node2
    </Proxy>

    ServerName localhost:9443
    ServerAdmin you@example.com
    
    SSLEngine on
    SSLProxyEngine on
    SSLProxyCheckPeerName Off
    SSLVerifyClient none
    SSLProxyVerify none

    SSLCertificateFile "/etc/pki/tls/certs/localhost.crt"
    SSLCertificateKeyFile "/etc/pki/tls/private/localhost.key"

</VirtualHost>

<?xml version="1.0" encoding="UTF-8"?>
<Server port="8007" shutdown="SHUTDOWN" address="localhost" >
  ...
  <Service name="Catalina">
    <Connector
      port="8081"
      protocol="org.apache.coyote.http11.Http11NioProtocol"
      maxThreads="150"
      SSLEnabled="true"
      connectionTimeout="20000"
      sslImplementationName="org.apache.tomcat.util.net.jsse.JSSEImplementation"
      keystoreFile="localhost.jks"
      keystorePass="changeit"
      address="localhost"
      >
          <UpgradeProtocol className="org.apache.coyote.http2.Http2Protocol" />
    </Connector>
    <Engine name="Catalina" defaultHost="localhost" jvmRoute="node1">
     ...
    </Engine>
  </Service>
</Server>