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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 class simulates a slow download. This used in a UI test to test the
// download manager. Requests to |kUnknownSizeUrl| and |kKnownSizeUrl| start
// downloads that pause after the first N bytes, to be completed by sending a
// request to |kFinishDownloadUrl|.
#ifndef CONTENT_TEST_NET_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_
#define CONTENT_TEST_NET_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_
#include <set>
#include <string>
#include "base/lazy_instance.h"
#include "base/memory/weak_ptr.h"
#include "net/url_request/url_request_job.h"
class URLRequestSlowDownloadJob : public net::URLRequestJob {
public:
// Test URLs.
static const char kUnknownSizeUrl[];
static const char kKnownSizeUrl[];
static const char kFinishDownloadUrl[];
// Download sizes.
static const int kFirstDownloadSize;
static const int kSecondDownloadSize;
// Timer callback, used to check to see if we should finish our download and
// send the second chunk.
void CheckDoneStatus();
// net::URLRequestJob methods
virtual void Start() OVERRIDE;
virtual bool GetMimeType(std::string* mime_type) const OVERRIDE;
virtual void GetResponseInfo(net::HttpResponseInfo* info) OVERRIDE;
virtual bool ReadRawData(net::IOBuffer* buf,
int buf_size,
int *bytes_read) OVERRIDE;
static net::URLRequestJob* Factory(net::URLRequest* request,
net::NetworkDelegate* network_delegate,
const std::string& scheme);
// Returns the current number of URLRequestSlowDownloadJobs that have
// not yet completed.
static size_t NumberOutstandingRequests();
// Adds the testing URLs to the net::URLRequestFilter.
static void AddUrlHandler();
private:
URLRequestSlowDownloadJob(net::URLRequest* request,
net::NetworkDelegate* network_delegate);
virtual ~URLRequestSlowDownloadJob();
// Enum indicating where we are in the read after a call to
// FillBufferHelper.
enum ReadStatus {
// The buffer was filled with data and may be returned.
BUFFER_FILLED,
// No data was added to the buffer because kFinishDownloadUrl has
// not yet been seen and we've already returned the first chunk.
REQUEST_BLOCKED,
// No data was added to the buffer because we've already returned
// all the data.
REQUEST_COMPLETE
};
ReadStatus FillBufferHelper(
net::IOBuffer* buf,
int buf_size,
int* bytes_written);
void GetResponseInfoConst(net::HttpResponseInfo* info) const;
// Mark all pending requests to be finished. We keep track of pending
// requests in |pending_requests_|.
static void FinishPendingRequests();
typedef std::set<URLRequestSlowDownloadJob*> SlowJobsSet;
static base::LazyInstance<SlowJobsSet>::Leaky pending_requests_;
void StartAsync();
void set_should_finish_download() { should_finish_download_ = true; }
int bytes_already_sent_;
bool should_finish_download_;
scoped_refptr<net::IOBuffer> buffer_;
int buffer_size_;
base::WeakPtrFactory<URLRequestSlowDownloadJob> weak_factory_;
};
#endif // CONTENT_TEST_NET_URL_REQUEST_SLOW_DOWNLOAD_JOB_H_
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