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80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
// Copyright (c) 2015 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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//
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#ifndef NET_QUIC_CHROMIUM_QUIC_CHROMIUM_PACKET_READER_H_
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#define NET_QUIC_CHROMIUM_QUIC_CHROMIUM_PACKET_READER_H_
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#include "base/macros.h"
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#include "base/memory/weak_ptr.h"
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#include "net/base/io_buffer.h"
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#include "net/base/net_export.h"
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#include "net/log/net_log_with_source.h"
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#include "net/quic/core/quic_packets.h"
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#include "net/quic/core/quic_time.h"
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#include "net/socket/datagram_client_socket.h"
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namespace net {
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class QuicClock;
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// If more than this many packets have been read or more than that many
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// milliseconds have passed, QuicChromiumPacketReader::StartReading() yields by
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// doing a QuicChromiumPacketReader::PostTask().
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const int kQuicYieldAfterPacketsRead = 32;
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const int kQuicYieldAfterDurationMilliseconds = 2;
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class NET_EXPORT_PRIVATE QuicChromiumPacketReader {
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public:
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class NET_EXPORT_PRIVATE Visitor {
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public:
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virtual ~Visitor() {}
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virtual void OnReadError(int result,
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const DatagramClientSocket* socket) = 0;
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virtual bool OnPacket(const QuicReceivedPacket& packet,
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const QuicSocketAddress& local_address,
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const QuicSocketAddress& peer_address) = 0;
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};
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QuicChromiumPacketReader(DatagramClientSocket* socket,
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QuicClock* clock,
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Visitor* visitor,
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int yield_after_packets,
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QuicTime::Delta yield_after_duration,
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const NetLogWithSource& net_log);
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virtual ~QuicChromiumPacketReader();
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// Causes the QuicConnectionHelper to start reading from the socket
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// and passing the data along to the QuicConnection.
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void StartReading();
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// Returns the estimate of dynamically allocated memory in bytes.
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size_t EstimateMemoryUsage() const;
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private:
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// A completion callback invoked when a read completes.
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void OnReadComplete(int result);
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// Return true if reading should continue.
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bool ProcessReadResult(int result);
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DatagramClientSocket* socket_;
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Visitor* visitor_;
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bool read_pending_;
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int num_packets_read_;
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QuicClock* clock_; // Owned by QuicStreamFactory
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int yield_after_packets_;
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QuicTime::Delta yield_after_duration_;
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QuicTime yield_after_;
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scoped_refptr<IOBufferWithSize> read_buffer_;
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NetLogWithSource net_log_;
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base::WeakPtrFactory<QuicChromiumPacketReader> weak_factory_;
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DISALLOW_COPY_AND_ASSIGN(QuicChromiumPacketReader);
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};
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} // namespace net
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#endif // NET_QUIC_CHROMIUM_QUIC_CHROMIUM_PACKET_READER_H_
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