Examples of client and server using MTLS certificates in a matrix of languages and protocols

For each of

• Golang
• Java
• Python
• ???

We should implement

• HTTP Server
• HTTP Client
• RPC (Swagger?) server
• RPC (Swagger?) client that use MTLS. Each should be a simple hello-world implementation that runs in the kubernetes cluster and returns information based on the MTLS context of the request.