/* Copyright 2013 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.
 */

/**
 * This file defines the <code>PPB_NetworkProxy</code> interface.
 */

[generate_thunk]

label Chrome {
  M29 = 1.0
};

/**
 * This interface provides a way to determine the appropriate proxy settings
 * for a given URL.
 *
 * Permissions: Apps permission <code>socket</code> with subrule
 * <code>resolve-proxy</code> is required for using this API.
 * For more details about network communication permissions, please see:
 * http://developer.chrome.com/apps/app_network.html
 */
[singleton]
interface PPB_NetworkProxy {
  /**
   * Retrieves the proxy that will be used for the given URL. The result will
   * be a string in PAC format. For more details about PAC format, please see
   * http://en.wikipedia.org/wiki/Proxy_auto-config
   *
   * @param[in] instance A <code>PP_Instance</code> identifying one instance
   * of a module.
   *
   * @param[in] url A string <code>PP_Var</code> containing a URL.
   *
   * @param[out] proxy_string A <code>PP_Var</code> that GetProxyForURL will
   * set upon successful completion. If the call fails, <code>proxy_string
   * </code> will be unchanged. Otherwise, it will be set to a string <code>
   * PP_Var</code> containing the appropriate PAC string for <code>url</code>.
   * If set, <code>proxy_string</code> will have a reference count of 1 which
   * the plugin must manage.
   *
   * @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
   * completion.
   *
   * @return An int32_t containing an error code from <code>pp_errors.h</code>.
   */
  int32_t GetProxyForURL([in] PP_Instance instance,
                         [in] PP_Var url,
                         [out] PP_Var proxy_string,
                         [in] PP_CompletionCallback callback);
};