if err != nil {
			handlerErr.Store(err)
		}
	}()

	// Response sender goroutine...
	go func(outBlock <-chan struct{}) {
		wg.Wait()
		defer m.parent.deleteMux(true, m.ID)
		m.sendResponses(ctx, send, c, &handlerErr, outBlock)
	}(m.outBlock)

	// Remote aliveness check if needed.
	if msg.DeadlineMS == 0 || msg.DeadlineMS > uint32(lastPingThreshold/time.Millisecond) {

		ticker := time.NewTicker(clientPingInterval)
		defer ticker.Stop()
		pingTimer = ticker.C
		atomic.StoreInt64(&m.LastPong, time.Now().Unix())
	}
	defer m.parent.deleteMux(false, m.MuxID)
	for {
		select {
		case <-m.ctx.Done():
			if debugPrint {
				fmt.Println("Client sending disconnect to mux", m.MuxID)
			}
			err := context.Cause(m.ctx)

		if debugReqs {
			fmt.Println(m.MuxID, c.String(), "handleMuxServerMsg: DELETING MUX")
		}
		c.outgoing.Delete(m.MuxID)
	}
}

func (c *Connection) deleteMux(incoming bool, muxID uint64) {
	if incoming {
		if debugPrint {
			fmt.Println("deleteMux: disconnect incoming mux", muxID)
		}
		v, loaded := c.inStream.LoadAndDelete(muxID)
		if loaded && v != nil {