throw new IOException("Failed to establish session with " + this.address);
    }


    private SmbNegotiation negotiate ( int prt ) throws IOException {
        /*
         * We cannot use Transport.sendrecv() yet because
         * the Transport thread is not setup until doConnect()
         * returns and we want to suppress all communication
         * until we have properly negotiated.
         */

                    getAddress().getHostAddress() +
                    "[\\PIPE\\netdfs]", auth);
        try {
            rpc = new MsrpcDfsRootEnum(getServer());
            handle.sendrecv(rpc);
            if (rpc.retval != 0)
                throw new SmbException(rpc.retval, true);
            return rpc.getEntries();
        } finally {
            try {
                handle.close();

		w.writeType(buf, typ.Elem())

	case *types.Chan:
		var s string
		switch typ.Dir() {
		case types.SendOnly:
			s = "chan<- "
		case types.RecvOnly:
			s = "<-chan "
		case types.SendRecv:
			s = "chan "
		default:
			panic("unreachable")
		}
		buf.WriteString(s)
		w.writeType(buf, typ.Elem())

	case *types.Alias:
		w.writeType(buf, types.Unalias(typ))

	case *types.Named:

            }
            try ( DcerpcHandle handle = DcerpcHandle.getHandle("ncacn_np:" + server + "[\\PIPE\\srvsvc]", getContext()) ) {
                handle.sendrecv(rpc);
                if ( rpc.retval != 0 ) {
                    throw new SmbException(rpc.retval, true);
                }
                aces = rpc.getSecurity();
                if ( aces != null ) {

				}
				break reqLoop
			}
			// Grab a send token.
		sendReq:
			select {
			case <-m.ctx.Done():
				m.addErrorNonBlockingClose(errResp, context.Cause(m.ctx))
				errState = true
				continue
			case <-pingTimer:
				if !m.doPing(errResp) {
					errState = true
					continue
				}
				goto sendReq
			case <-m.outBlock:
			}
			msg := message{
				Op:      OpMuxClientMsg,

		}(t)
		start := time.Now()
		if st.Requests != nil {
			defer close(st.Requests)
		}
		// Fill up queue.
		for sendReq {
			select {
			case st.Requests <- []byte("Hello"):
				time.Sleep(10 * time.Millisecond)
			default:
				sendReq = false
			}
		}
		cancel()
		<-serverCanceled
		t.Log("server cancel time:", time.Since(start))
		clientEnd := <-clientCanceled