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// Copyright 2014 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.
#ifndef NET_QUIC_TOOLS_QUIC_SIMPLE_SERVER_PACKET_WRITER_H_
#define NET_QUIC_TOOLS_QUIC_SIMPLE_SERVER_PACKET_WRITER_H_
#include <stddef.h>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "net/base/ip_endpoint.h"
#include "net/quic/quic_connection.h"
#include "net/quic/quic_packet_writer.h"
#include "net/quic/quic_protocol.h"
namespace net {
class IPAddress;
class QuicBlockedWriterInterface;
class UDPServerSocket;
struct WriteResult;
// Chrome specific packet writer which uses a UDPServerSocket for writing
// data.
class QuicSimpleServerPacketWriter : public QuicPacketWriter {
public:
typedef base::Callback<void(WriteResult)> WriteCallback;
QuicSimpleServerPacketWriter(UDPServerSocket* socket,
QuicBlockedWriterInterface* blocked_writer);
~QuicSimpleServerPacketWriter() override;
// Use this method to write packets rather than WritePacket:
// QuicSimpleServerPacketWriter requires a callback to exist for every
// write, which will be called once the write completes.
virtual WriteResult WritePacketWithCallback(const char* buffer,
size_t buf_len,
const IPAddress& self_address,
const IPEndPoint& peer_address,
PerPacketOptions* options,
WriteCallback callback);
void OnWriteComplete(int rv);
// QuicPacketWriter implementation:
bool IsWriteBlockedDataBuffered() const override;
bool IsWriteBlocked() const override;
void SetWritable() override;
QuicByteCount GetMaxPacketSize(const IPEndPoint& peer_address) const override;
protected:
// Do not call WritePacket on its own -- use WritePacketWithCallback
WriteResult WritePacket(const char* buffer,
size_t buf_len,
const IPAddress& self_address,
const IPEndPoint& peer_address,
PerPacketOptions* options) override;
private:
UDPServerSocket* socket_;
// To be notified after every successful asynchronous write.
QuicBlockedWriterInterface* blocked_writer_;
// To call once the write completes.
WriteCallback callback_;
// Whether a write is currently in flight.
bool write_blocked_;
base::WeakPtrFactory<QuicSimpleServerPacketWriter> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(QuicSimpleServerPacketWriter);
};
} // namespace net
#endif // NET_QUIC_TOOLS_QUIC_SIMPLE_SERVER_PACKET_WRITER_H_
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