ping.py

import subprocess
import re
import paho.mqtt.client as mqtt
import json
import time
  

client = mqtt.Client()
client.connect("localhost", 1883, 60)
  
data = {}

while True:
    for host in ["fritz.box", "google.com"]:
        try:
            x = str(subprocess.Popen(
                ["ping", "-c", "1", host], stdout=subprocess.PIPE).communicate()[0])
            m = re.search(
                "\d* bytes from (.*?): icmp_seq=\d* ttl=\d* time=(\d*\.?\d*) ms", x)
            data[host] = {
                "addr": m.group(1),
                "duration": float(m.group(2))
            }
        except:
            pass
  
    print(data)
    client.publish(topic="test/ping", payload=json.dumps(data))
    time.sleep(10)