public string CheckTransmission()
{
var isOnline = _telemetryClient.Disconnect();
int retryLeft = 3;
while (!isOnline && retryLeft > 0)
{
isOnline = _telemetryClient.Connect(DiagnosticChannelConnectionString);
retryLeft -= 1;
}
if (!isOnline)
{
throw new Exception("Unable to connect.");
}
_telemetryClient.Send(Channel.DiagnosticMessage);
return(_telemetryClient.Receive());
}