TCP Echo Service

This sample runs TCP Echo Server as an Istio service. TCP Echo Server allows you to connect to it over TCP and echoes back data sent to it along with a preconfigured prefix.

Usage

To run the TCP Echo Service sample:

1. Install Istio by following the istio install instructions.

2. Start the tcp-echo-server service inside the Istio service mesh:

   $ kubectl apply -f <(istioctl kube-inject -f tcp-echo.yaml)
   service/tcp-echo created
   deployment.extensions/tcp-echo created
   

3. Test by running the nc command from a busybox container from within the cluster.

   $ kubectl run -i --rm --restart=Never dummy --image=busybox -- sh -c "echo world | nc tcp-echo 9000"
   hello world
   pod "dummy" deleted
   

   As you observe, sending world on a TCP connection to the server results in the server prepending hello and echoing back with hello world.

4. To clean up, execute the following command:

   $ kubectl delete -f tcp-echo.yaml
   service "tcp-echo" deleted
   deployment.extensions "tcp-echo" deleted