// - maybe async, so we shouldn't do it here.
		if m.respErr.Load() == nil {
			xioutil.SafeClose(respHandler)
		}
	}()
	var pingTimer <-chan time.Time
	if m.deadline == 0 || m.deadline > m.clientPingInterval {
		ticker := time.NewTicker(m.clientPingInterval)
		defer ticker.Stop()
		pingTimer = ticker.C
		atomic.StoreInt64(&m.LastPong, time.Now().UnixNano())
	}
	defer m.parent.deleteMux(false, m.MuxID)
	for {
		select {