How to use

getChallengeRequests

method

in

org.restlet.Response

/**
 * Sets the list of authentication requests sent by an origin server to a
 * client. Note that when used with HTTP connectors, this property maps to
 * the "WWW-Authenticate" header. This method clears the current list and
 * adds all entries in the parameter list.
 * 
 * @param challengeRequests
 *            A list of authentication requests sent by an origin server to
 *            a client.
 */
public void setChallengeRequests(List<ChallengeRequest> challengeRequests) {
  synchronized (getChallengeRequests()) {
    if (challengeRequests != getChallengeRequests()) {
      getChallengeRequests().clear();
      if (challengeRequests != null) {
        getChallengeRequests().addAll(challengeRequests);
      }
    }
  }
}

/**
 * Returns the list of authentication requests sent by an origin server to a
 * client.
 * 
 * @return The list of authentication requests sent by an origin server to a
 *         client.
 */
@Override
public List<ChallengeRequest> getChallengeRequests() {
  return getWrappedResponse().getChallengeRequests();
}

/**
 * Returns the list of authentication requests sent by an origin server to a
 * client. If none is available, an empty list is returned.
 * 
 * @return The list of authentication requests.
 * @see Response#getChallengeRequests()
 */
public List<ChallengeRequest> getChallengeRequests() {
  return getResponse() == null ? null : getResponse()
      .getChallengeRequests();
}

/**
 * Challenges the client by adding a challenge request to the response and
 * by setting the status to {@link Status#CLIENT_ERROR_UNAUTHORIZED}.
 * 
 * @param response
 *            The response to update.
 * @param stale
 *            Indicates if the new challenge is due to a stale response.
 */
public void challenge(Response response, boolean stale) {
  boolean loggable = response.getRequest().isLoggable()
      && getLogger().isLoggable(Level.FINE);
  if (loggable) {
    getLogger().log(Level.FINE,
        "An authentication challenge was requested.");
  }
  response.setStatus(Status.CLIENT_ERROR_UNAUTHORIZED);
  response.getChallengeRequests().add(createChallengeRequest(stale));
}

response.getChallengeRequests().clear();

response.getChallengeRequests().clear();

  List<ChallengeRequest> crs = org.restlet.engine.security.AuthenticatorUtils
      .parseRequest(response, header.getValue(), headers);
  response.getChallengeRequests().addAll(crs);
} else if (HEADER_PROXY_AUTHENTICATE.equalsIgnoreCase(header.getName())) {
  List<ChallengeRequest> crs = org.restlet.engine.security.AuthenticatorUtils

ChallengeRequest challengeRequest = null;
for (ChallengeRequest c : response.getChallengeRequests()) {
  if (challengeResponse.getScheme().equals(c.getScheme())) {
    challengeRequest = c;

if (response.getChallengeRequests() != null) {
  for (ChallengeRequest challengeRequest : response.getChallengeRequests()) {
    addHeader(HEADER_WWW_AUTHENTICATE,
        org.restlet.engine.security.AuthenticatorUtils