tls.echo

tls.echo

Listens on tls port 23456 and will echo back whatever is sent to the server.

Requirements

• bash, jq, nc
• Kubernetes (e.g. Docker Desktop with Kubernetes enabled)
• kubectl
• helm 3.0+
• openssl

Setup

The setup.sh script:

• installs Zilla to the Kubernetes cluster with helm and waits for the pod to start up
• starts port forwarding

./setup.sh

output:

+ ZILLA_CHART=oci://ghcr.io/aklivity/charts/zilla
+ helm upgrade --install zilla-tls-echo oci://ghcr.io/aklivity/charts/zilla --namespace zilla-tls-echo --create-namespace --wait [...]
NAME: zilla-tls-echo
LAST DEPLOYED: [...]
NAMESPACE: zilla-tls-echo
STATUS: deployed
REVISION: 1
NOTES:
Zilla has been installed.
[...]
+ nc -z localhost 23456
+ kubectl port-forward --namespace zilla-tls-echo service/zilla  23456
+ sleep 1
+ nc -z localhost 23456
Connection to localhost port 23456 [tcp/*] succeeded!

Verify behavior

openssl s_client -connect localhost:23456 -CAfile test-ca.crt -quiet -alpn echo

output:

depth=1 C = US, ST = California, L = Palo Alto, O = Aklivity, OU = Development, CN = Test CA
verify return:1
depth=0 C = US, ST = California, L = Palo Alto, O = Aklivity, OU = Development, CN = localhost
verify return:1

Type a Hello, world message and press enter.

output:

Hello, world
Hello, world

Teardown

The teardown.sh script stops port forwarding, uninstalls Zilla and deletes the namespace.

./teardown.sh

output:

+ pgrep kubectl
99999
+ killall kubectl
+ helm uninstall zilla-tls-echo --namespace zilla-tls-echo
release "zilla-tls-echo" uninstalled
+ kubectl delete namespace zilla-tls-echo
namespace "zilla-tls-echo" deleted