The aim is to demonstrate a simple HAProxy, GRPC Servers and Keycloak setup.

In a nutshell, we have a simple client which :

• authenticate itself to get a JWT token
• ask for the user name
• send an authenticated request to a GRPC server
• print the reply of the GRPC server (a simple greeting)

docker-compose.yml setup HAProxy, GRPC servers, Postgres database and Keycloak services

srv.Dockerfile create the image to run .NET GRPC server

lb.Dockerfile pulls the HAProxy image and copy the configuration

src contains the source code for the .NET GRPC client and server

haproxy.cfg contains the configuration use to set up HAProxy

db-init/init.sql contains the script use to create the Keycloak user and database

keycloak/keys contains the public key used to validate the signature of the JWT token

keycloak/realm contains an export of the target Keycloak realm. It is used to set up Keycloak configuration

Type in :

docker-compose up --build

or

docker-compose up --build -d

This will launch all services :

• http://localhost:3000 : for GRPC server
• http://localhost:8090/stats : to see the stats page of HAProxy
• http://localhost:8090/auth : to access the Keycloak service

The user and password for Keycloak is admin

To make sure to run things smoothly make sure you use dotnet 9.

Also make sure to use http://localhost:8090/stats to verify that all services are up before running

cd src/client && dotnet run

Then follow instructions