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#!/bin/bash
get_default_iface(){
ip route get 8.8.8.8 | awk '{ print $5; exit }'
}
wait_listen_port(){
PORT="$1"
for _ in $(seq 120); do
if ss -lnt | grep -Pq "LISTEN.*?:$PORT +.*?\\n*"; then
break
fi
sleep 0.5
done
# Ensure we really have the listen port, this will fail with an
# exit code if the port is not available.
ss -lnt | grep -Pq "LISTEN.*?:$PORT +.*?\\n*"
}
make_network_service() {
SERVICE_NAME="$1"
PORT="$2"
systemd-run --unit "$SERVICE_NAME" sh -c "while true; do printf 'HTTP/1.1 200 OK\\n\\nok\\n' | nc -l -p $PORT -w 1; done"
wait_listen_port "$PORT"
}
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