public void LocalCloseOnNetworkStream()
 {
     // Local close (NetworkStream).
     using (ITestSocketPair pair = m_spFactory.CreateSocketPair()) {
         ISocketWrapper sock = pair.SocketA;
         NetworkStream  strm = sock.GetStream();
         Assert.IsTrue(sock.Connected, "1a");
         strm.Close();
         Assert.IsFalse(sock.Connected, "1b");
     }
 }