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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 net::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 CONTENT_COMMON_NET_URL_FETCHER_IMPL_H_
#define CONTENT_COMMON_NET_URL_FETCHER_IMPL_H_
#pragma once
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "content/common/content_export.h"
#include "content/public/common/url_fetcher.h"
namespace content {
class URLFetcherCore;
class URLFetcherDelegate;
class URLFetcherFactory;
} // namespace content
class CONTENT_EXPORT URLFetcherImpl : public content::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,
content::URLFetcherDelegate* d);
virtual ~URLFetcherImpl();
// content::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(
net::HttpRequestHeaders* headers) const OVERRIDE;
virtual void SetRequestContext(
net::URLRequestContextGetter* request_context_getter) OVERRIDE;
virtual void AssociateWithRenderView(const GURL& first_party_for_cookies,
int render_process_id,
int render_view_id) OVERRIDE;
virtual void SetAutomaticallyRetryOn5xx(bool retry) OVERRIDE;
virtual void SetMaxRetries(int max_retries) OVERRIDE;
virtual int GetMaxRetries() const OVERRIDE;
virtual base::TimeDelta GetBackoffDelay() const OVERRIDE;
virtual void SaveResponseToFileAtPath(
const FilePath& file_path,
scoped_refptr<base::MessageLoopProxy> file_message_loop_proxy) OVERRIDE;
virtual void SaveResponseToTemporaryFile(
scoped_refptr<base::MessageLoopProxy> file_message_loop_proxy) OVERRIDE;
virtual net::HttpResponseHeaders* GetResponseHeaders() const OVERRIDE;
virtual net::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 net::URLRequestStatus& GetStatus() const OVERRIDE;
virtual int GetResponseCode() const OVERRIDE;
virtual const net::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();
protected:
// Returns the delegate.
content::URLFetcherDelegate* delegate() const;
private:
friend class ScopedURLFetcherFactory;
friend class TestURLFetcher;
friend class URLFetcherTest;
// Only used by URLFetcherTest, returns the number of URLFetcher::Core objects
// actively running.
static int GetNumFetcherCores();
static content::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(content::URLFetcherFactory* factory);
const scoped_refptr<content::URLFetcherCore> core_;
DISALLOW_COPY_AND_ASSIGN(URLFetcherImpl);
};
#endif // CONTENT_COMMON_NET_URL_FETCHER_IMPL_H_
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