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;
}
