@Override
public void sendRedirect(String location) throws IOException {
if (isIncluding()) return;
if (location == null) throw new IllegalArgumentException();
if (!URIUtil.hasScheme(location)) {
StringBuilder buf = _channel.getRequest().getRootURL();
if (location.startsWith("/")) buf.append(location);
else {
String path = _channel.getRequest().getRequestURI();
String parent = (path.endsWith("/")) ? path : URIUtil.parentPath(path);
location = URIUtil.addPaths(parent, location);
if (location == null) throw new IllegalStateException("path cannot be above root");
if (!location.startsWith("/")) buf.append('/');
buf.append(location);
}
location = buf.toString();
HttpURI uri = new HttpURI(location);
String path = uri.getDecodedPath();
String canonical = URIUtil.canonicalPath(path);
if (canonical == null) throw new IllegalArgumentException();
if (!canonical.equals(path)) {
buf = _channel.getRequest().getRootURL();
buf.append(URIUtil.encodePath(canonical));
String param = uri.getParam();
if (param != null) {
buf.append(';');
buf.append(param);
}
String query = uri.getQuery();
if (query != null) {
buf.append('?');
buf.append(query);
}
String fragment = uri.getFragment();
if (fragment != null) {
buf.append('#');
buf.append(fragment);
}
location = buf.toString();
}
}
resetBuffer();
setHeader(HttpHeader.LOCATION, location);
setStatus(HttpServletResponse.SC_MOVED_TEMPORARILY);
complete();
}
