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69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
// Copyright (c) 2011 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_HTTP_HTTP_RESPONSE_BODY_DRAINER_H_
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#define NET_HTTP_HTTP_RESPONSE_BODY_DRAINER_H_
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#include <memory>
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#include "base/macros.h"
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#include "base/memory/ref_counted.h"
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#include "base/timer/timer.h"
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#include "net/base/completion_callback.h"
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#include "net/base/net_export.h"
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#include "net/http/http_network_session.h"
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namespace net {
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class HttpStream;
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class IOBuffer;
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class NET_EXPORT_PRIVATE HttpResponseBodyDrainer {
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public:
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// The size in bytes of the buffer we use to drain the response body that
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// we want to throw away. The response body is typically a small page just a
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// few hundred bytes long. We set a limit to prevent it from taking too long,
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// since we may as well just create a new socket then.
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static const int kDrainBodyBufferSize = 16384;
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static const int kTimeoutInSeconds = 5;
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explicit HttpResponseBodyDrainer(HttpStream* stream);
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~HttpResponseBodyDrainer();
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// Starts reading the body until completion, or we hit the buffer limit, or we
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// timeout. After Start(), |this| will eventually delete itself. If it
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// doesn't complete immediately, it will add itself to |session|.
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void Start(HttpNetworkSession* session);
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private:
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enum State {
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STATE_DRAIN_RESPONSE_BODY,
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STATE_DRAIN_RESPONSE_BODY_COMPLETE,
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STATE_NONE,
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};
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int DoLoop(int result);
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int DoDrainResponseBody();
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int DoDrainResponseBodyComplete(int result);
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void OnIOComplete(int result);
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void OnTimerFired();
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void Finish(int result);
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scoped_refptr<IOBuffer> read_buf_;
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const std::unique_ptr<HttpStream> stream_;
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State next_state_;
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int total_read_;
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CompletionCallback user_callback_;
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base::OneShotTimer timer_;
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HttpNetworkSession* session_;
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DISALLOW_COPY_AND_ASSIGN(HttpResponseBodyDrainer);
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};
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} // namespace net
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#endif // NET_HTTP_HTTP_RESPONSE_BODY_DRAINER_H_
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