Function isAllowedOrigin

api/stream/stream.go:183–205

(r *http.Request, allowedOrigins []*regexp.Regexp)

}

func isAllowedOrigin(r *http.Request, allowedOrigins []*regexp.Regexp) bool {
	origin := r.Header.Get("origin")
	if origin == "" {
		return true
	}

	u, err := url.Parse(origin)
	if err != nil {
		return false
	}

	if strings.EqualFold(u.Host, r.Host) {
		return true
	}

	for _, allowedOrigin := range allowedOrigins {
		if allowedOrigin.MatchString(strings.ToLower(u.Hostname())) {
			return true
		}
	}

	return false
}

func newUpgrader(allowedWebSocketOrigins []string) *websocket.Upgrader {
	compiledAllowedOrigins := compileAllowedWebSocketOrigins(allowedWebSocketOrigins)