Method toAbsolute

java/org/apache/catalina/connector/Response.java:1427–1489

Convert (if necessary) and return the absolute URL that represents the resource referenced by this possibly relative URL. If this URL is already absolute, return it unchanged. @param location URL to be (possibly) converted and then returned @return the absolute URL @exception IllegalArgumentExcep

(String location)

     *                                         absolute one
     */
    protected String toAbsolute(String location) {

        if (location == null) {
            return null;
        }

        boolean leadingSlash = location.startsWith("/");

        if (location.startsWith("//")) {
            // Scheme relative
            redirectURLCC.recycle();
            // Add the scheme
            String scheme = request.getScheme();
            try {
                redirectURLCC.append(scheme, 0, scheme.length());
                redirectURLCC.append(':');
                redirectURLCC.append(location, 0, location.length());
                return redirectURLCC.toString();
            } catch (IOException ioe) {
                throw new IllegalArgumentException(location, ioe);
            }

        } else if (leadingSlash || !UriUtil.hasScheme(location)) {

            redirectURLCC.recycle();

            String scheme = request.getScheme();
            String name = request.getServerName();
            int port = request.getServerPort();

            try {
                redirectURLCC.append(scheme, 0, scheme.length());
                redirectURLCC.append("://", 0, 3);
                redirectURLCC.append(name, 0, name.length());
                if ((scheme.equals("http") && port != 80) || (scheme.equals("https") && port != 443)) {
                    redirectURLCC.append(':');
                    String portS = port + "";
                    redirectURLCC.append(portS, 0, portS.length());
                }
                if (!leadingSlash) {
                    String relativePath = request.getDecodedRequestURI();
                    int pos = relativePath.lastIndexOf('/');
                    CharChunk encodedURI = urlEncoder.encodeURL(relativePath, 0, pos);
                    redirectURLCC.append(encodedURI);
                    encodedURI.recycle();
                    redirectURLCC.append('/');
                }
                redirectURLCC.append(location, 0, location.length());

                normalize(redirectURLCC);
            } catch (IOException ioe) {
                throw new IllegalArgumentException(location, ioe);
            }

            return redirectURLCC.toString();

        } else {