Ping a website and check internet connection

Module Module1
    'add as many known sites as you wish; those that are pingable if the internet is up
    Private InternetSites() As String = {"www.foxnews.com", "www.google.com", "www.yahoo.com", "www.expedia.com"}
    Const MAX_FAILURES_TO_PROVE_DOWN As Byte = 3

    Sub Main()
        If My.Computer.Network.IsAvailable Then
            If InternetIsReachable() Then
                'DO YOUR STUFF HERE
            End If
        End If
    End Sub

    Private Function InternetIsReachable() As Boolean
        Dim FailureCount As Short = 0

        For Each Site As String In InternetSites
            If My.Computer.Network.Ping(Site) Then
                Return True
            Else
                FailureCount += 1
            End If

            If FailureCount > MAX_FAILURES_TO_PROVE_DOWN Then
                Return False
            End If
        Next

        Return False
    End Function
End Module

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