This is a simple example of using socket activation with systemd to serve a simple HTTP server on http://127.0.0.1:8076

To try it out go get the httpserver and run it under the systemd-activate helper

export GOPATH="$PWD"
go get github.com/coreos/go-systemd/examples/activation/httpserver
systemd-socket-activate -l 127.0.0.1:8076 ./bin/httpserver

Then curl the URL and you will notice that it starts up:

curl 127.0.0.1:8076
hello socket activated world!