public static bool IsNetTcpConnectivityAvailable(Uri baseAddress, out Exception exception)
{
NetworkDetector.ConnectivityStatus connectivityStatu;
exception = null;
while (true)
{
NetworkDetector.ConnectivityStatus connectivityStatu1 = (NetworkDetector.ConnectivityStatus)Interlocked.CompareExchange(ref NetworkDetector.tcpConnectivityStatus, 1, 0);
switch (connectivityStatu1)
{
case NetworkDetector.ConnectivityStatus.Testing:
{
Thread.Sleep(5);
continue;
}
case NetworkDetector.ConnectivityStatus.Available:
case NetworkDetector.ConnectivityStatus.Unavailable:
{
return(connectivityStatu1 == NetworkDetector.ConnectivityStatus.Available);
}
default:
{
connectivityStatu = NetworkDetector.CheckTcpConnectivity(baseAddress, out exception);
NetworkDetector.ConnectivityStatus connectivityStatu2 = (NetworkDetector.ConnectivityStatus)Interlocked.CompareExchange(ref NetworkDetector.tcpConnectivityStatus, (int)connectivityStatu, 1);
if (connectivityStatu2 == NetworkDetector.ConnectivityStatus.Testing)
{
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
if (connectivityStatu2 == NetworkDetector.ConnectivityStatus.Unknown)
{
continue;
}
if (connectivityStatu == connectivityStatu2)
{
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
NetworkDetector.tcpConnectivityStatus = 0;
continue;
}
}
}
return(connectivityStatu == NetworkDetector.ConnectivityStatus.Available);
}
