test-servers/

README

TCP Server

A Go server that accepts TCP requests and responds with the local address of the connection.

Description

If the server is run inside a Docker container, the local address is the IP of the docker container. This is useful for distinguishing between instances of Docker containers. This server is used by the python tests in the load balancing tests.

Config

The default port the server listens to is 3333. The server takes a single argument, port, to allow the port to be overridden.

UDP Server

A Go server that accepts UDP requests and responds with the local address of the connection.

Description

If the server is run inside a Docker container, the local address is the IP of the docker container. This is useful for distinguishing between instances of Docker containers. This server is used by the python tests in the load balancing tests.

Config

The default port the server listens to is 3334. The server takes a single argument, port, to allow the port to be overridden.

Making changes

If you make changes to the TCP server:

• Test the change:
  • Use the minikube registry $ eval $(minikube docker-env)
  • Build the docker image docker build --build-arg type=tcp -t tcp-server .
  • Update the service yaml to use the local version -> imagePullPolicy: Never
  • Test the changes
• Include the change as part of the commit that requires the tcp-server change
  • Build the docker image with an increased version number docker build --build-arg type=tcp -t nginxkic/tcp-server:X.Y .
  • Push the docker image to the public repo docker push nginxkic/tcp-server:X.Y
  • Update the tag service yaml to match the new tag
  • Commit the tag change as part of the commit that requires the tcp-server change

For the UDP server:

docker build --build-arg type=udp -t nginxkic/udp-server:X.Y .
docker push nginxkic/udp-server:X.Y