Method SetCloseHandler

conn.go:1135–1144

SetCloseHandler sets the handler for close messages received from the peer. The code argument to h is the received close code or CloseNoStatusReceived if the close message is empty. The default close handler sends a close message back to the peer. The handler function is called from the NextReader,

(h func(code int, text string) error)

// application must perform some action before sending a close message back to
// the peer.
func (c *Conn) SetCloseHandler(h func(code int, text string) error) {
	if h == nil {
		h = func(code int, text string) error {
			message := FormatCloseMessage(code, "")
			c.WriteControl(CloseMessage, message, time.Now().Add(writeWait))
			return nil
		}
	}
	c.handleClose = h
}

// PingHandler returns the current ping handler
func (c *Conn) PingHandler() func(appData string) error {