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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsICancelable;
interface nsIDNSRecord;
interface nsIDNSByTypeRecord;

/**
 * nsIDNSListener
 */
[scriptable, uuid(27d49bfe-280c-49e0-bbaa-f6200c232c3d)]
interface nsIDNSListener : nsISupports
{
    /**
     * called when an asynchronous host lookup completes.
     *
     * @param aRequest
     *        the value returned from asyncResolve.
     * @param aRecord
     *        the DNS record corresponding to the hostname that was resolved.
     *        this parameter is null if there was an error.
     * @param aStatus
     *        if the lookup failed, this parameter gives the reason.
     */
    void onLookupComplete(in nsICancelable aRequest,
                          in nsIDNSRecord  aRecord,
                          in nsresult      aStatus);
    /**
     * called when an asynchronous dns lookup by type completes.
     *
     * @param aRequest
     *        the value returned from asyncResolve.
     * @param aRecord
     *        a string returned by the dns server.
     * @param aStatus
     *        if the lookup failed, this parameter gives the reason.
     */
    void onLookupByTypeComplete(in nsICancelable      aRequest,
                                in nsIDNSByTypeRecord aResult,
                                in nsresult           aStatus);

};

/**
 * nsIDNSListenerProxy:
 *
 * Must be implemented by classes that wrap the original listener passed to
 * nsIDNSService.AsyncResolve, so we have access to original listener for
 * comparison purposes.
 */
[uuid(60eff0e4-6f7c-493c-add9-1cbea59063ad)]
interface nsIDNSListenerProxy : nsISupports
{
  /*
   * The original nsIDNSListener which requested hostname resolution.
   */
  readonly attribute nsIDNSListener originalListener;
};