InternetCheck is an extremely lightweight standalone application written in C++ designed to monitor internet connectivity running discreetly in the background with low performance overhead. It logs each instance when the internet connection is lost and restored, recording these events to a log file.
InternetCheck uses DNS lookups and ICMP (ping) requests to monitor the status of internet connectivity. It targets five key domains for these checks: google.com, microsoft.com, yahoo.com, amazon.com, and cisco.com. The application utilizes the Windows API for executing DNS and ICMP requests, ensuring compatibility exclusively with Windows operating systems.
The application is self-contained with all necessary libraries statically linked, requiring no additional installations.
To install InternetCheck:
- Place the
Install-Startup-RegKey.batfile in the same directory asInternetCheck.exe. - Execute
Install-Startup-RegKey.batto configure the application to automatically start upon system login or boot.
To manually start the application, simply run InternetCheck.exe.
The application writes its logs to InternetCheck-Report-DATE.log, located in the Documents\InternetCheck directory. This log file is appended with timestamps detailing when the internet connection goes down and comes back up.