Technology stack includes: spring-boot 2.1.0, Netty, HTTP/2

Spring-boot and netty documentation https://docs.spring.io/spring-boot/docs/2.1.0.M2/reference/html/howto-embedded-web-servers.html#howto-configure-http2-netty

Code does not includes the certificate from security reasons. You will need to create it by yourself. In the properties there is a full description of how to create the certification.