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WiFiMon Raspberry Pi image given above is a custom version of Raspbian Stretch with desktop, with the default Raspberry Pi credentials (user: pi, password: raspberry).

We advise the user to secure Raspberry Pi by changing the default password.

Setting up the WHP

Step 1: Write the image to the micro SD card

Follow the instructions at the official Raspberry Pi site. Skip the "Download the image" step and use the WiFiMon Raspberry Pi operating system image instead.

Step 2: Start the Raspberry Pi

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Secure your Raspberry Pi by changing the default password. Optionally, you may enable SSH to access the command line of a Raspberry Pi remotely or setup remote desktop. Next, you have to connect to the wireless network you want to measure.

The WiFiMon Hardware Probe (WHP) performs performance tests towards the WiFiMon Test Server (WTS) in an automated manner, thus simulating end users from a fixed location in the monitored WiFi network. WHP uses crontab to schedule the tests. To do that, open the terminal (as user "pi") and enter the command: crontab -e. You will have to pick the text editor. Then scroll to the bottom of the file and add the following code block (which you will modify as explained below):

Code Block
languagebash
19,39,59 * * * * export DISPLAY=:0 && firefox --new-window https://www.google.com >/dev/null 2>&1

00,05,10,15,20,25,30,35,40,45,50,55 * * * * export DISPLAY=:0 && firefox --new-tab URL_TO_nettest.html >/dev/null 2>&1

01,06,11,16,21,26,31,36,41,46,51,56 * * * * export DISPLAY=:0 && firefox --new-tab URL_TO_speedworker.html >/dev/null 2>&1

02,07,12,17,22,27,32,37,42,47,52,57 * * * * export DISPLAY=:0 && firefox --new-tab URL_TO_boomerang.html >/dev/null 2>&1

03,08,13,18,23,28,33,38,43,48,53,58 /home/pi/wireless.py >> ~/cron.log 2>&1

18,38,58 * * * * scripts/kill-firefox.sh >/dev/null 2>&1

10 0 * * 0 scripts/pi-reboot.sh >/dev/null 2>&1

You are required have to modify the following parts of the crontab that are denoted with red color. Lines in lines 2-4:

  • URL_TO_nettest
  • URL_TO_speedworker
  • URL_TO_boomerang

You should put the URL or IP address of the WTS require the URLs of the websites in which the NetTest, speedtest and boomerang JS scripts are injected. Details related to about the configuration of the WiFiMon testtools are included in the WiFiMon Test Server Server (WTS) installation documentation. Following the assumptions/notations of the WTS guide, example URLs for NetTestfor NetTest, speedtest and boomerang respectively are (i) https://WTS_FQDN/wifimon/measurements/nettest.html, (ii) https://WTS_FQDN/wifimon/measurements/speedworker.html and (iii) https://WTS_FQDN/wifimon/measurements/boomerang.html.

Line 5 of the crontab is related to the streaming of wireless network interface metrics to the WiFiMon Analysis Server (WAS). Optionally, the intervals of the WHP measurements could be altered by appropriately configuring the crontab so that measurement are more or less frequent. The configuration of the following code block considers 5-minute intervals for each testtooltest tool.

Step 4: Streaming Wireless Network Interface Metrics to the WiFiMon Analysis Server (WAS)

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