Example for configuring HTTP/3 in Spring Boot application

Prerequisites

Configure SSL Bundle

In application.properties add the SSL configuration

spring.ssl.bundle.jks.server-http3.key.alias...
spring.ssl.bundle.jks.server-http3.keystore...

More information about SSL Bundle settings:

Available endpoints

Hello Endpoint

This endpoint showcases HTTP/3 server support

curl --http3 https://localhost:8443/hello -v

Remote Endpoint

This endpoint showcases HTTP/3 client support

curl --http3 https://localhost:8443/remote -v