Reject an exchange doesn't generate a RST paquet

[damgot]

Hello,

I did a very simple ressource :

class RejectedResource: Resource
    {
        public RejectedResource() : base("RejectedResource")
        {
            Attributes.Title = "RejectedResource";
        }

        protected override void DoGet(CoapExchange exchange)
        {
            exchange.Reject();
        }
    }

But when I try to request a GET on this resource, the server never generate a RST message...
Nothing is sent at all.

Thanks for your help.