This tool tests the connection to internet performing ping on several internet servers. The tool can be configured to ping any type of server on internet or on local network to control the availability of the server or the network.

Every 5 seconds the program pings several servers and report the performance in the console and in a file. If none of the server answers it means the communication is down (network or server). While the communication is down, the tool continues to ping the servers waiting at least one server response, meaning the communication is back. When the communication is back, the tool traces the duration of the disconnection and restart checking of the connection.

• download the repo
• run the program by dotnet run
• ctrl+C to stop the program

to log the result in a file just pipe like this: dotnet run > myfile.txt

In the output you will retrieve 1 line for each test. In each line the information are separated by |

The line is composed of:

• date/time of the test eg: 02/05/2021 16:48:24,
• the result of the test eg: OK, KO, RECONNECT,
• depending on the result there are detailed information:

  • OK ... at least one ping succeeded
    you will found the roundtrip of the ping for each server eg: 02/05/2021 16:45:15|OK |061|181|061|.
    If one server does not answer or timeout the value is replaced by --- eg: 02/05/2021 16:48:24|OK |059|069|---|

  • KO ... not ping are succeeding
    you will found the duration since when the connection is lost eg: 02/05/2021 16:48:31|KO |pings are failing, disconnected since: 1 seconds

  during the disconnection the is only one line, the duration of the disconnection being updated at every test when the communication is working again, the line is replaced by one RECONNECT line output

  • RECONNECT ... the connection is back
    you will found the whole duration of disconnection eg:02/05/2021 16:48:29|RECONNECTION|7|Disconnected during : 7 seconds

You can configure some behavior the tool via the appsetting.json file, located side to the program.

Here is the default configuration:

{
    "ping" : {
        "frequency": "5000",
        "servers" : ["8.8.8.8", "4.2.2.2", "208.67.222.222"],
        "loginfile" : true,
        "loginfiledisconnected" : true
    }
}

Duration between 2 ping tests performed. The value is defined in milliseconds.

The list of the IP servers to ping. By default there is Google, Level 3, OpenDNS IP servers. You can update as you wish.

The tool will log the results in a file, in addition of the console output.

When the system is disconnected the log are also written in the file.

This could be useful if you don't want to be polluted by all the log when the system is disconnected.

When activating the loginfile the output will be persisted in a file.

The file is automatically generated side to the program with the pattern icm.yyyymmdd.csv (yyyy for years, mm for months, dd for days ). Doing so you will have 1 file per day.

If you dotnet run the tool. There is a high probability that you will found the log closed to the .dll generated in the folder .\bin\Debug\net5.0\

• Initialize program, log in the console
• Calculate disconnection duration and show in the log
• Configuration file
• Log in file
• Provide GUI (systray?)
• Play sound when disconnecting, connecting again
• support when network card is not connected (currently there is weird error :-( ))