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80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
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#define NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
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#include <stdint.h>
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#include <string>
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#include "base/memory/ref_counted.h"
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#include "base/memory/weak_ptr.h"
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#include "base/strings/string_piece.h"
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#include "net/base/completion_callback.h"
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#include "net/base/completion_once_callback.h"
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#include "net/base/net_export.h"
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#include "net/url_request/url_range_request_job.h"
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namespace base {
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class RefCountedMemory;
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}
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namespace net {
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class URLRequest;
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class NET_EXPORT URLRequestSimpleJob : public URLRangeRequestJob {
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public:
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URLRequestSimpleJob(URLRequest* request, NetworkDelegate* network_delegate);
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void Start() override;
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void Kill() override;
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int ReadRawData(IOBuffer* buf, int buf_size) override;
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bool GetMimeType(std::string* mime_type) const override;
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bool GetCharset(std::string* charset) override;
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protected:
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~URLRequestSimpleJob() override;
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// Subclasses must override either GetData or GetRefCountedData to define the
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// way response data is determined.
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// The return value should be:
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// - OK if data is obtained;
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// - ERR_IO_PENDING if async processing is needed to finish obtaining data.
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// This is the only case when |callback| should be called after
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// completion of the operation. In other situations |callback| should
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// never be called;
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// - any other ERR_* code to indicate an error. This code will be used
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// as the error code in the URLRequestStatus when the URLRequest
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// is finished.
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virtual int GetData(std::string* mime_type,
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std::string* charset,
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std::string* data,
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CompletionOnceCallback callback) const;
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// Similar to GetData(), except |*data| can share ownership of the bytes
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// instead of copying them into a std::string.
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virtual int GetRefCountedData(std::string* mime_type,
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std::string* charset,
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scoped_refptr<base::RefCountedMemory>* data,
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CompletionOnceCallback callback) const;
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void StartAsync();
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private:
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void OnGetDataCompleted(int result);
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HttpByteRange byte_range_;
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std::string mime_type_;
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std::string charset_;
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scoped_refptr<base::RefCountedMemory> data_;
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int64_t next_data_offset_;
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base::WeakPtrFactory<URLRequestSimpleJob> weak_factory_;
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};
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} // namespace net
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#endif // NET_URL_REQUEST_URL_REQUEST_SIMPLE_JOB_H_
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