biggerBufMin = 32 << 10

	// This is the maximum size of bigger buffers.
	biggerBufMax = maxBufferSize

	// If there is a queue, merge up to this many messages.
	maxMergeMessages = 50

	// clientPingInterval will ping the remote handler every 15 seconds.
	// Clients disconnect when we exceed 2 intervals.
	clientPingInterval = 15 * time.Second

	pingFrame := message{
		Op:         OpPing,
		DeadlineMS: uint32(connPingInterval.Milliseconds()),
		Payload:    make([]byte, pingMsg{}.Msgsize()),
	}

	defer ping.Stop()
	queue := make([][]byte, 0, maxMergeMessages)
	merged := make([]byte, 0, writeBufferSize)
	var queueSize int
	var buf bytes.Buffer
	var wsw wsWriter
	var lastSetDeadline time.Time

	// Helper to write everything in buf.