Method registerToProxyKite

kontrolclient.go:467–507

registerToProxyKite dials the proxy kite and calls register method then returns the reverse-proxy URL.

(c *Client, kiteURL *url.URL)

// registerToProxyKite dials the proxy kite and calls register method then
// returns the reverse-proxy URL.
func (k *Kite) registerToProxyKite(c *Client, kiteURL *url.URL) (*url.URL, error) {
	err := c.Dial()
	if err != nil {
		k.Log.Error("Cannot connect to Proxy kite: %s", err.Error())
		return nil, err
	}

	// Disconnect from Proxy Kite if error happens while registering.
	defer func() {
		if err != nil {
			c.Close()
		}
	}()

	// do not panic if we call Tell method below
	if kiteURL == nil {
		kiteURL = &url.URL{}
	}

	// this could be tunnelproxy or reverseproxy. Tunnelproxy doesn't need an
	// URL however Reverseproxy needs one.
	result, err := c.TellWithTimeout("register", k.Config.Timeout, kiteURL.String())
	if err != nil {
		k.Log.Error("Proxy register error: %s", err.Error())
		return nil, err
	}

	proxyURL, err := result.String()
	if err != nil {
		k.Log.Error("Proxy register result error: %s", err.Error())
		return nil, err
	}

	parsed, err := url.Parse(proxyURL)
	if err != nil {
		k.Log.Error("Cannot parse Proxy URL: %s", err.Error())
		return nil, err
	}

	return parsed, nil
}

// TellKontrolWithTimeout is a lower level function for communicating directly with
// kontrol. Like GetKites and GetToken, this automatically sets up and connects to