/**
* Build a redirect url.
*
* @param request the request
* @param response the response
* @param url the target url to redirect to
* @return the url
*/
public static String buildRedirectUrl(
final HttpServletRequest request, final HttpServletResponse response, final String url) {
if (!url.startsWith("http://") && !url.startsWith("https://")) {
String scheme = request.getScheme();
int serverPort = RESOLVER.getServerPort(request);
boolean inHttp = "http".equalsIgnoreCase(scheme);
boolean inHttps = "https".equalsIgnoreCase(scheme);
boolean includePort = !((inHttp && serverPort == 80) || (inHttps && serverPort == 443));
String port = includePort ? ":" + serverPort : "";
return scheme + "://" + request.getServerName() + port + request.getContextPath() + url;
}
return url;
}
