| // Copyright 2015 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 EXTENSIONS_BROWSER_EXTENSION_REQUEST_LIMITING_THROTTLE_H_ |
| #define EXTENSIONS_BROWSER_EXTENSION_REQUEST_LIMITING_THROTTLE_H_ |
| |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "content/public/browser/resource_throttle.h" |
| |
| namespace net { |
| struct RedirectInfo; |
| class URLRequest; |
| } |
| |
| namespace extensions { |
| |
| class ExtensionThrottleEntryInterface; |
| class ExtensionThrottleManager; |
| |
| // This class monitors requests issued by extensions and throttles the request |
| // if there are too many requests made within a short time to urls with the same |
| // scheme, host, port and path. For the exact criteria for throttling, please |
| // also see extension_throttle_manager.cc. |
| class ExtensionRequestLimitingThrottle : public content::ResourceThrottle { |
| public: |
| ExtensionRequestLimitingThrottle(const net::URLRequest* request, |
| ExtensionThrottleManager* manager); |
| ~ExtensionRequestLimitingThrottle() override; |
| |
| // content::ResourceThrottle implementation (called on IO thread): |
| void WillStartRequest(bool* defer) override; |
| void WillRedirectRequest(const net::RedirectInfo& redirect_info, |
| bool* defer) override; |
| void WillProcessResponse(bool* defer) override; |
| |
| const char* GetNameForLogging() const override; |
| |
| private: |
| const net::URLRequest* request_; |
| ExtensionThrottleManager* manager_; |
| |
| // This is used to supervise traffic and enforce exponential back-off. |
| scoped_refptr<ExtensionThrottleEntryInterface> throttling_entry_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ExtensionRequestLimitingThrottle); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_EXTENSION_REQUEST_LIMITING_THROTTLE_H_ |