jitter

Jitter monitoring and logging tool

Have problem with VOIP app frequently dropping calls, so I wrote this tool to continuously monitor the data connection jitter and dropped packets to multiple hosts

The tool is to be run on multiple devices at the same time and then correlate results. Output is a log file with comma separated data that can be pasted into spreadsheet. For easy correlation, timestamp is synchronized from worldtimeapi.org and if measurement falls behind, empty timestamped lines are printed at the intervals when measurement was not possible.

Needs Python 3.6 and higher

Windows

Needs package pythonping, which uses sockets directly, install with pip

I just run it from within SciTE text editor, but any IDE or even console would work.

python jitter.py

Linux

Needs system ping utility, should be present on any system.

Tested on Lubuntu 20.04. Run from the console terminal:

python jitter.py

Android

This is the most interesting for me because I have not used phones or Android for development before but Termux makes it so easy.

Install Termux from Play Store. Then run it and install openssh

pkg upgrade pkg install openssh

After that start ssh server:

sshd

Find out your local IP, it will be the line starting with inet

ifconfig wlan0

Find your user name, and set your password, sshd will need it.

whoami passwd

Now you have all info to connect from SSH/SFTP clients to port 8022

pkg install python

Finally ready to run the tool

python jitter.py

There is a script gossh that takaes care of keeping the WiFi alive starting sshd daemon and figuring out the current IP. Next time you need to connect to your phone via SSH, just type

./gossh

and then connect to it with given information. Start the script:

nohup python jitter.py

When ending your Termux session, type

pkill jitter.py termux-wake-unlock