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- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 2001
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Akkana Peck <akkana@netscape.com> (original author)
- * Darin Fisher <darin@meer.net>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #include "nsIRequest.idl"
-
- interface nsIURI;
- interface nsIChannel;
- interface nsIRequestObserver;
-
- /**
- * nsIURIChecker
- *
- * The URI checker is a component that can be used to verify the existance
- * of a resource at the location specified by a given URI. It will use
- * protocol specific methods to verify the URI (e.g., use of HEAD request
- * for HTTP URIs).
- */
- [scriptable, uuid(4660c1a1-be2d-4c78-9baf-c22984176c28)]
- interface nsIURIChecker : nsIRequest
- {
- /**
- * Initializes the URI checker. After this method is called, it is valid
- * to further configure the URI checker by calling its nsIRequest methods.
- * This method creates the channel that will be used to verify the URI.
- * In the case of the HTTP protocol, only a HEAD request will be issued.
- *
- * @param aURI
- * The URI to be checked.
- */
- void init(in nsIURI aURI);
-
- /**
- * Returns the base channel that will be used to verify the URI.
- */
- readonly attribute nsIChannel baseChannel;
-
- /**
- * Begin asynchronous checking URI for validity. Notification will be
- * asynchronous through the nsIRequestObserver callback interface. When
- * OnStartRequest is fired, the baseChannel attribute will have been
- * updated to reflect the final channel used (corresponding to any redirects
- * that may have been followed).
- *
- * Our interpretations of the nsIRequestObserver status codes:
- * NS_BINDING_SUCCEEDED: link is valid
- * NS_BINDING_FAILED: link is invalid (gave an error)
- * NS_BINDING_ABORTED: timed out, or cancelled
- *
- * @param aObserver
- * The object to notify when the link is verified. We will
- * call aObserver.OnStartRequest followed immediately by
- * aObserver.OnStopRequest. It is recommended that the caller use
- * OnStopRequest to act on the link's status. The underlying request
- * will not be cancelled until after OnStopRequest has been called.
- * @param aContext
- * A closure that will be passed back to the nsIRequestObserver
- * methods.
- */
- void asyncCheck(in nsIRequestObserver aObserver, in nsISupports aContext);
- };
-