public static WebRender matchRenderer(String user, HttpExchange t) { int browser = WebRender.getBrowser(t.getRequestHeaders().getFirst("User-agent")); String confName = WebRender.getBrowserName(browser); RendererConfiguration r = RendererConfiguration.find(confName, t.getRemoteAddress().getAddress()); return ((r instanceof WebRender) && (StringUtils.isBlank(user) || user.equals(((WebRender) r).getUser()))) ? (WebRender) r : null; }