Method SetPingHandler

conn.go:1158–1171

SetPingHandler sets the handler for ping messages received from the peer. The appData argument to h is the PING message application data. The default ping handler sends a pong to the peer. The handler function is called from the NextReader, ReadMessage and message reader Read methods. The applicati

(h func(appData string) error)

// reader Read methods. The application must read the connection to process
// ping messages as described in the section on Control Messages above.
func (c *Conn) SetPingHandler(h func(appData string) error) {
	if h == nil {
		h = func(message string) error {
			err := c.WriteControl(PongMessage, []byte(message), time.Now().Add(writeWait))
			if err == ErrCloseSent {
				return nil
			} else if e, ok := err.(net.Error); ok && e.Temporary() {
				return nil
			}
			return err
		}
	}
	c.handlePing = h
}

// PongHandler returns the current pong handler
func (c *Conn) PongHandler() func(appData string) error {