NGINX as Proxy to Tomcat

<!-- Existing Connector on Port 8080 -->
<Connector port="8080" protocol="HTTP/1.1"
           connectionTimeout="20000"
           redirectPort="8443" />

<!-- New Connector for Proxy -->
<Connector port="9090" protocol="HTTP/1.1"
           connectionTimeout="20000" maxThreads="2000"
           scheme="https" proxyPort="443" redirectPort="443" />

<Host name="localhost" appBase="webapps"
      unpackWARs="true" autoDeploy="true">

    <!-- Remote IP Valve for handling proxy IP addresses -->
    <Valve className="org.apache.catalina.valves.RemoteIpValve"
           internalProxies="\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}"
           remoteIpHeader="x-forwarded-for"
           proxiesHeader="x-forwarded-by"
           protocolHeader="x-forwarded-proto" />

    <!-- Access log configuration -->
    <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
           prefix="localhost_access_log" suffix=".txt"
           pattern="%h %l %u %t \"%r\" %s %b" />
</Host>

server {
    listen          80;
    server_name     tomcat.sampledomain.com;
    root            /opt/tomcat/webapps/;
    underscores_in_headers on;

    location / {
        proxy_pass              http://localhost:9090/;
        proxy_set_header        X-Real-IP $remote_addr;
        proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header        X-NginX-Proxy true;
        proxy_set_header        X-Forwarded-Proto $scheme;
        proxy_set_header        Host $http_host;
        proxy_set_header        Upgrade $http_upgrade;
        proxy_redirect          off;
        proxy_http_version      1.1;
        proxy_set_header        Connection "upgrade";
    }
}