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Sourcecode: chromium-browser version File versions  Download package


// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.


#include <string>

namespace browser_sync {

// This is the matrix for the interaction between clients with
// different notification methods:
//          Listen
//          L T N
//        +-------+
//      L | E E E |
// Send T | Y Y Y |
//      N | E Y Y |
//        +-------+
// 'Y' means a client listening with the column notification method
// will receive notifications from a client sending with the row
// notification method. 'E' means means that the notification will be
// an empty one, which may be dropped by the server in the future.

enum NotificationMethod {
  // Old, broken notification method.  Works only if notification
  // servers don't drop empty notifications.
  // Compatible with new notifications.  Also compatible with legacy
  // notifications if the notification servers don't drop empty
  // notifications.
  // New, ideal notification method.  Compatible only with
  // transitional notifications.

extern const NotificationMethod kDefaultNotificationMethod;

std::string NotificationMethodToString(
    NotificationMethod notification_method);

// If the given string is not one of "legacy", "transitional", or
// "new", returns kDefaultNotificationMethod.
NotificationMethod StringToNotificationMethod(const std::string& str);

}  // namespace browser_sync


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