Index: net/proxy/dhcp_proxy_script_fetcher_win.h |
=================================================================== |
--- net/proxy/dhcp_proxy_script_fetcher_win.h (revision 85647) |
+++ net/proxy/dhcp_proxy_script_fetcher_win.h (working copy) |
@@ -1,123 +0,0 @@ |
-// Copyright (c) 2011 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. |
- |
-#ifndef NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_ |
-#define NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_ |
-#pragma once |
- |
-#include <set> |
-#include <string> |
- |
-#include "base/memory/scoped_ptr.h" |
-#include "base/memory/scoped_vector.h" |
-#include "base/threading/non_thread_safe.h" |
-#include "base/timer.h" |
-#include "net/proxy/dhcp_proxy_script_fetcher.h" |
- |
-namespace net { |
- |
-class DhcpProxyScriptAdapterFetcher; |
-class URLRequestContext; |
- |
-// Windows-specific implementation. |
-class DhcpProxyScriptFetcherWin |
- : public DhcpProxyScriptFetcher, |
- public base::NonThreadSafe { |
- public: |
- // Creates a DhcpProxyScriptFetcherWin that issues requests through |
- // |url_request_context|. |url_request_context| must remain valid for |
- // the lifetime of DhcpProxyScriptFetcherWin. |
- explicit DhcpProxyScriptFetcherWin(URLRequestContext* url_request_context); |
- virtual ~DhcpProxyScriptFetcherWin(); |
- |
- // DhcpProxyScriptFetcher implementation. |
- int Fetch(string16* utf16_text, CompletionCallback* callback) OVERRIDE; |
- void Cancel() OVERRIDE; |
- const GURL& GetPacURL() const OVERRIDE; |
- std::string GetFetcherName() const OVERRIDE; |
- |
- // Sets |adapter_names| to contain the name of each network adapter on |
- // this machine that has DHCP enabled and is not a loop-back adapter. Returns |
- // false on error. |
- static bool GetCandidateAdapterNames(std::set<std::string>* adapter_names); |
- |
- protected: |
- // Event/state transition handlers |
- void OnFetcherDone(int result); |
- void OnWaitTimer(); |
- void TransitionToDone(); |
- |
- // Virtual methods introduced to allow unit testing. |
- virtual DhcpProxyScriptAdapterFetcher* ImplCreateAdapterFetcher(); |
- virtual bool ImplGetCandidateAdapterNames( |
- std::set<std::string>* adapter_names); |
- virtual int ImplGetMaxWaitMs(); |
- |
- // This is the outer state machine for fetching PAC configuration from |
- // DHCP. It relies for sub-states on the state machine of the |
- // DhcpProxyScriptAdapterFetcher class. |
- // |
- // The goal of the implementation is to the following work in parallel |
- // for all network adapters that are using DHCP: |
- // a) Try to get the PAC URL configured in DHCP; |
- // b) If one is configured, try to fetch the PAC URL. |
- // c) Once this is done for all adapters, or a timeout has passed after |
- // it has completed for the fastest adapter, return the PAC file |
- // available for the most preferred network adapter, if any. |
- // |
- // The state machine goes from START->NO_RESULTS when it creates |
- // and starts an DhcpProxyScriptAdapterFetcher for each adapter. It goes |
- // from NO_RESULTS->SOME_RESULTS when it gets the first result; at this |
- // point a wait timer is started. It goes from SOME_RESULTS->DONE in |
- // two cases: All results are known, or the wait timer expired. A call |
- // to Cancel() will also go straight to DONE from any state. Any |
- // way the DONE state is entered, we will at that point cancel any |
- // outstanding work and return the best known PAC script or the empty |
- // string. |
- // |
- // The state machine is reset for each Fetch(), a call to which is |
- // only valid in states START and DONE, as only one Fetch() is |
- // allowed to be outstanding at any given time. |
- enum State { |
- STATE_START, |
- STATE_NO_RESULTS, |
- STATE_SOME_RESULTS, |
- STATE_DONE, |
- }; |
- |
- // Current state of this state machine. |
- State state_; |
- |
- // Vector, in Windows' network adapter preference order, of |
- // DhcpProxyScriptAdapterFetcher objects that are or were attempting |
- // to fetch a PAC file based on DHCP configuration. |
- typedef ScopedVector<DhcpProxyScriptAdapterFetcher> FetcherVector; |
- FetcherVector fetchers_; |
- |
- // Callback invoked when any fetcher completes. |
- CompletionCallbackImpl<DhcpProxyScriptFetcherWin> fetcher_callback_; |
- |
- // Number of fetchers we are waiting for. |
- int num_pending_fetchers_; |
- |
- // Lets our client know we're done. Not valid in states START or DONE. |
- CompletionCallback* client_callback_; |
- |
- // Pointer to string we will write results to. Not valid in states |
- // START and DONE. |
- string16* destination_string_; |
- |
- // PAC URL retrieved from DHCP, if any. Valid only in state STATE_DONE. |
- GURL pac_url_; |
- |
- base::OneShotTimer<DhcpProxyScriptFetcherWin> wait_timer_; |
- |
- scoped_refptr<URLRequestContext> url_request_context_; |
- |
- DISALLOW_IMPLICIT_CONSTRUCTORS(DhcpProxyScriptFetcherWin); |
-}; |
- |
-} // namespace net |
- |
-#endif // NET_PROXY_DHCP_PROXY_SCRIPT_FETCHER_WIN_H_ |