WCF Transport Security

i have WSHttpBinding and ServiceHost in my code. how 开发者_高级运维can i set httpsGetEnabled and mexHttpsBinding from code behind?

ServiceHost host = new ServiceHost(typeof(MyService));
ServiceMetadataBehavior metadataBehavior;
metadataBehavior = host.Description.Behaviors.Find<ServiceMetadataBehavior>();

if(metadataBehavior == null)
{
    Debug.Assert(BaseAddresses.Any(baseAddress=>baseAddress.Uri.Scheme == "http"));
    metadataBehavior = new ServiceMetadataBehavior();
    metadataBehavior.HttpGetEnabled = true;
    host.Description.Behaviors.Add(metadataBehavior);
}

host.Open();