After having many issues with ISPs not giving us the internet speed we were paying for and having too many outages, I decided to write some code to monitor our internet connection. The first version of InternetMon just logged all the data in a file for me to go through later, but eventually I added a graphs to make it easier to see when our internet was slower than it should be.
InternetMon pings a specified IP address and does a speed test at certain intervals which can be changed in config.json. The default is ping 1.1.1.1 4 times every 300000ms (5 minutes), and do a speedtest every 3600000ms (1 hour). All of this is logged in log.txt and also to a database.
InternetMon runs on port 5514. To access the graphs, use the following URLs (replacing ip with the IP address of the device you're running InternetMon on):
- Speedtest: http://ip:5514/speedtest
- Ping: http://ip:5514/ping
By default, you will be shown the data from the past 24 hours. You can also add a query string to the end of the URL to get data from a different duration:
- Hours:
?h=2will get 2 hours of data. You can change this to get up to 23 hours of data - Days:
?d=5will get 5 days of data. You can change this to get up to 29 days of data