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