public AppSelfHostTests()
{
var port = HostContext.FindFreeTcpPort(startingFrom: 5000);
if (port < 5000)
{
throw new Exception("Expected port >= 5000, got: " + port);
}
ListeningOn = "http://localhost:{0}/".Fmt(port);
appHost = new AppHostSmartPool()
.Init()
.Start(ListeningOn);
}