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// 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.
// This file contains URLFetcher, a wrapper around URLRequest that handles
// low-level details like thread safety, ref counting, and incremental buffer
// reading. This is useful for callers who simply want to get the data from a
// URL and don't care about all the nitty-gritty details.
//
// NOTE(willchan): Only one "IO" thread is supported for URLFetcher. This is a
// temporary situation. We will work on allowing support for multiple "io"
// threads per process.
#ifndef NET_URL_REQUEST_URL_FETCHER_IMPL_H_
#define NET_URL_REQUEST_URL_FETCHER_IMPL_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "net/base/net_export.h"
#include "net/url_request/url_fetcher.h"
namespace net {
class URLFetcherCore;
class URLFetcherDelegate;
class URLFetcherFactory;
class NET_EXPORT_PRIVATE URLFetcherImpl : public URLFetcher {
public:
// |url| is the URL to send the request to.
// |request_type| is the type of request to make.
// |d| the object that will receive the callback on fetch completion.
URLFetcherImpl(const GURL& url,
RequestType request_type,
URLFetcherDelegate* d);
virtual ~URLFetcherImpl();
// URLFetcher implementation:
virtual void SetUploadData(const std::string& upload_content_type,
const std::string& upload_content) OVERRIDE;
virtual void SetChunkedUpload(
const std::string& upload_content_type) OVERRIDE;
virtual void AppendChunkToUpload(const std::string& data,
bool is_last_chunk) OVERRIDE;
virtual void SetLoadFlags(int load_flags) OVERRIDE;
virtual int GetLoadFlags() const OVERRIDE;
virtual void SetReferrer(const std::string& referrer) OVERRIDE;
virtual void SetExtraRequestHeaders(
const std::string& extra_request_headers) OVERRIDE;
virtual void AddExtraRequestHeader(const std::string& header_line) OVERRIDE;
virtual void GetExtraRequestHeaders(
HttpRequestHeaders* headers) const OVERRIDE;
virtual void SetRequestContext(
URLRequestContextGetter* request_context_getter) OVERRIDE;
virtual void SetFirstPartyForCookies(
const GURL& first_party_for_cookies) OVERRIDE;
virtual void SetURLRequestUserData(
const void* key,
const CreateDataCallback& create_data_callback) OVERRIDE;
virtual void SetStopOnRedirect(bool stop_on_redirect) OVERRIDE;
virtual void SetAutomaticallyRetryOn5xx(bool retry) OVERRIDE;
virtual void SetMaxRetriesOn5xx(int max_retries) OVERRIDE;
virtual int GetMaxRetriesOn5xx() const OVERRIDE;
virtual base::TimeDelta GetBackoffDelay() const OVERRIDE;
virtual void SetAutomaticallyRetryOnNetworkChanges(int max_retries) OVERRIDE;
virtual void SaveResponseToFileAtPath(
const FilePath& file_path,
scoped_refptr<base::TaskRunner> file_task_runner) OVERRIDE;
virtual void SaveResponseToTemporaryFile(
scoped_refptr<base::TaskRunner> file_task_runner) OVERRIDE;
virtual HttpResponseHeaders* GetResponseHeaders() const OVERRIDE;
virtual HostPortPair GetSocketAddress() const OVERRIDE;
virtual bool WasFetchedViaProxy() const OVERRIDE;
virtual void Start() OVERRIDE;
virtual const GURL& GetOriginalURL() const OVERRIDE;
virtual const GURL& GetURL() const OVERRIDE;
virtual const URLRequestStatus& GetStatus() const OVERRIDE;
virtual int GetResponseCode() const OVERRIDE;
virtual const ResponseCookies& GetCookies() const OVERRIDE;
virtual bool FileErrorOccurred(
base::PlatformFileError* out_error_code) const OVERRIDE;
virtual void ReceivedContentWasMalformed() OVERRIDE;
virtual bool GetResponseAsString(
std::string* out_response_string) const OVERRIDE;
virtual bool GetResponseAsFilePath(
bool take_ownership,
FilePath* out_response_path) const OVERRIDE;
static void CancelAll();
static void SetEnableInterceptionForTests(bool enabled);
// TODO(akalin): Make these private again once URLFetcher::Create()
// is in net/.
static URLFetcherFactory* factory();
// Sets the factory used by the static method Create to create a URLFetcher.
// URLFetcher does not take ownership of |factory|. A value of NULL results
// in a URLFetcher being created directly.
//
// NOTE: for safety, this should only be used through ScopedURLFetcherFactory!
static void set_factory(URLFetcherFactory* factory);
protected:
// Returns the delegate.
URLFetcherDelegate* delegate() const;
private:
friend class URLFetcherTest;
// Only used by URLFetcherTest, returns the number of URLFetcher::Core objects
// actively running.
static int GetNumFetcherCores();
const scoped_refptr<URLFetcherCore> core_;
DISALLOW_COPY_AND_ASSIGN(URLFetcherImpl);
};
} // namespace net
#endif // NET_URL_REQUEST_URL_FETCHER_IMPL_H_
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