| // Copyright (c) 2012 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 CONTENT_BROWSER_LOADER_RESOURCE_LOADER_H_ |
| #define CONTENT_BROWSER_LOADER_RESOURCE_LOADER_H_ |
| |
| #include <memory> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/timer/timer.h" |
| #include "content/browser/loader/resource_handler.h" |
| #include "content/browser/ssl/ssl_client_auth_handler.h" |
| #include "content/browser/ssl/ssl_error_handler.h" |
| #include "content/common/content_export.h" |
| #include "content/public/browser/resource_controller.h" |
| #include "net/url_request/url_request.h" |
| |
| namespace net { |
| class X509Certificate; |
| } |
| |
| namespace content { |
| class ResourceDispatcherHostLoginDelegate; |
| class ResourceLoaderDelegate; |
| class ResourceRequestInfoImpl; |
| |
| // This class is responsible for driving the URLRequest (i.e., calling Start, |
| // Read, and servicing events). It has a ResourceHandler, which is typically a |
| // chain of ResourceHandlers, and is the ResourceController for its handler. |
| class CONTENT_EXPORT ResourceLoader : public net::URLRequest::Delegate, |
| public SSLErrorHandler::Delegate, |
| public SSLClientAuthHandler::Delegate, |
| public ResourceController { |
| public: |
| ResourceLoader(std::unique_ptr<net::URLRequest> request, |
| std::unique_ptr<ResourceHandler> handler, |
| ResourceLoaderDelegate* delegate); |
| ~ResourceLoader() override; |
| |
| void StartRequest(); |
| void CancelRequest(bool from_renderer); |
| |
| bool is_transferring() const { return is_transferring_; } |
| void MarkAsTransferring(const scoped_refptr<ResourceResponse>& response); |
| void CompleteTransfer(); |
| |
| net::URLRequest* request() { return request_.get(); } |
| ResourceRequestInfoImpl* GetRequestInfo(); |
| |
| void ClearLoginDelegate(); |
| |
| private: |
| // net::URLRequest::Delegate implementation: |
| void OnReceivedRedirect(net::URLRequest* request, |
| const net::RedirectInfo& redirect_info, |
| bool* defer) override; |
| void OnAuthRequired(net::URLRequest* request, |
| net::AuthChallengeInfo* info) override; |
| void OnCertificateRequested(net::URLRequest* request, |
| net::SSLCertRequestInfo* info) override; |
| void OnSSLCertificateError(net::URLRequest* request, |
| const net::SSLInfo& info, |
| bool fatal) override; |
| void OnResponseStarted(net::URLRequest* request) override; |
| void OnReadCompleted(net::URLRequest* request, int bytes_read) override; |
| |
| // SSLErrorHandler::Delegate implementation: |
| void CancelSSLRequest(int error, const net::SSLInfo* ssl_info) override; |
| void ContinueSSLRequest() override; |
| |
| // SSLClientAuthHandler::Delegate implementation. |
| void ContinueWithCertificate(net::X509Certificate* cert) override; |
| void CancelCertificateSelection() override; |
| |
| // ResourceController implementation: |
| void Resume() override; |
| void Cancel() override; |
| void CancelAndIgnore() override; |
| void CancelWithError(int error_code) override; |
| |
| void StartRequestInternal(); |
| void CancelRequestInternal(int error, bool from_renderer); |
| void CompleteResponseStarted(); |
| void StartReading(bool is_continuation); |
| void ResumeReading(); |
| void ReadMore(int* bytes_read); |
| // Passes a read result to the handler. |
| void CompleteRead(int bytes_read); |
| void ResponseCompleted(); |
| void CallDidFinishLoading(); |
| void RecordHistograms(); |
| |
| bool is_deferred() const { return deferred_stage_ != DEFERRED_NONE; } |
| |
| // Used for categorizing loading of prefetches for reporting in histograms. |
| // NOTE: This enumeration is used in histograms, so please do not add entries |
| // in the middle. |
| enum PrefetchStatus { |
| STATUS_UNDEFINED, |
| STATUS_SUCCESS_FROM_CACHE, |
| STATUS_SUCCESS_FROM_NETWORK, |
| STATUS_CANCELED, |
| STATUS_MAX, |
| }; |
| |
| enum DeferredStage { |
| DEFERRED_NONE, |
| DEFERRED_START, |
| DEFERRED_NETWORK_START, |
| DEFERRED_REDIRECT, |
| DEFERRED_READ, |
| DEFERRED_RESPONSE_COMPLETE, |
| DEFERRED_FINISH |
| }; |
| DeferredStage deferred_stage_; |
| |
| std::unique_ptr<net::URLRequest> request_; |
| std::unique_ptr<ResourceHandler> handler_; |
| ResourceLoaderDelegate* delegate_; |
| |
| scoped_refptr<ResourceDispatcherHostLoginDelegate> login_delegate_; |
| std::unique_ptr<SSLClientAuthHandler> ssl_client_auth_handler_; |
| |
| base::TimeTicks read_deferral_start_time_; |
| |
| // Indicates that we are in a state of being transferred to a new downstream |
| // consumer. We are waiting for a notification to complete the transfer, at |
| // which point we'll receive a new ResourceHandler. |
| bool is_transferring_; |
| |
| // Instrumentation add to investigate http://crbug.com/503306. |
| // TODO(mmenke): Remove once bug is fixed. |
| int times_cancelled_before_request_start_; |
| bool started_request_; |
| int times_cancelled_after_request_start_; |
| |
| base::WeakPtrFactory<ResourceLoader> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ResourceLoader); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_LOADER_RESOURCE_LOADER_H_ |