System.Net.Security.SslStream.BeginAuthenticateAsServer C# (CSharp) Method

        public virtual IAsyncResult BeginAuthenticateAsServer(X509Certificate serverCertificate, AsyncCallback asyncCallback, object asyncState)

        {
            return BeginAuthenticateAsServer(serverCertificate, false, SecurityProtocol.SystemDefaultSecurityProtocols, false,
                                                          asyncCallback,
                                                            asyncState);
        }

        public void assign_without_subscribing_on_MessageReceived_means_that_messages_can_get_lost()
        {
            var slice = new BufferSlice(new byte[65535], 0, 65535);
            var encoder = Substitute.For<IMessageEncoder>();
            var decoder = Substitute.For<IMessageDecoder>();
            var stream = new SslStream(new NetworkStream(_helper.Server));
            stream.BeginAuthenticateAsServer(_certificate, OnAuthenticated, stream);

            var sut = CreateClientChannel(slice, encoder, decoder);
            Action actual = () => sut.Assign(_helper.Client);

            actual.ShouldThrow<InvalidOperationException>();
        }