v.close()
		}
	} else {
		if debugPrint {
			fmt.Println("deleteMux: disconnect outgoing mux", muxID)
		}
		v, loaded := c.outgoing.LoadAndDelete(muxID)
		if loaded && v != nil {
			if debugReqs {
				fmt.Println(muxID, c.String(), "deleteMux: DELETING MUX")
			}
			v.close()
			gridLogIf(c.ctx, c.queueMsg(message{Op: OpDisconnectServerMux, MuxID: muxID}, nil))
		}

}

// Response is a response from the server.
type Response struct {
	Msg []byte
	Err error
}

func newMuxClient(ctx context.Context, muxID uint64, parent *Connection) *muxClient {
	ctx, cancelFn := context.WithCancelCause(ctx)
	return &muxClient{
		MuxID:              muxID,
		ctx:                ctx,
		cancelFn:           cancelFn,
		parent:             parent,
		LastPong:           time.Now().UnixNano(),

	// Send async.
	var wg sync.WaitGroup
	wg.Add(1)
	go func() {
		defer wg.Done()
		var ack message
		ack.Op = OpAckMux
		ack.Flags = m.BaseFlags
		ack.MuxID = m.ID
		m.send(ack)
		if debugPrint {
			fmt.Println("connected stream mux:", ack.MuxID)
		}
	}()

	// Data inbound to the handler
	var handlerIn chan []byte
	if inboundCap > 0 {
		m.inbound = make(chan []byte, inboundCap)

	if err != nil {
		err = msgp.WrapError(err)
		return
	}
	if zb0001 != 7 {
		err = msgp.ArrayError{Wanted: 7, Got: zb0001}
		return
	}
	z.MuxID, err = dc.ReadUint64()
	if err != nil {
		err = msgp.WrapError(err, "MuxID")
		return
	}
	z.Seq, err = dc.ReadUint32()
	if err != nil {
		err = msgp.WrapError(err, "Seq")
		return
	}
	z.DeadlineMS, err = dc.ReadUint32()

	// Wait for the receiver channel to fill.
	for len(st.responses) != cap(st.responses) {
		time.Sleep(time.Millisecond)
	}
	cancel()
	<-serverCanceled
	local.debugMsg(debugIsOutgoingClosed, st.muxID, func(closed bool) {
		if !closed {
			t.Error("expected outgoing closed")
		} else {
			t.Log("outgoing was closed")
		}
	})

	// Drain responses and check if error propagated.