net/quic/quic_default_packet_writer.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_QUIC_QUIC_DEFAULT_PACKET_WRITER_H_
   6 #define NET_QUIC_QUIC_DEFAULT_PACKET_WRITER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "net/base/ip_endpoint.h"
  11 #include "net/quic/quic_connection.h"
  12 #include "net/quic/quic_packet_writer.h"
  13 #include "net/quic/quic_protocol.h"
  14 #include "net/udp/datagram_client_socket.h"
  15
  16 namespace net {
  17
  18 struct WriteResult;
  19
  20 // Chrome specific packet writer which uses a DatagramClientSocket for writing
  21 // data.
  22 class NET_EXPORT_PRIVATE QuicDefaultPacketWriter : public QuicPacketWriter {
  23  public:
  24   QuicDefaultPacketWriter();
  25   explicit QuicDefaultPacketWriter(DatagramClientSocket* socket);
  26   ~QuicDefaultPacketWriter() override;
  27
  28   // QuicPacketWriter
  29   WriteResult WritePacket(const char* buffer,
  30                           size_t buf_len,
  31                           const IPAddressNumber& self_address,
  32                           const IPEndPoint& peer_address) override;
  33   bool IsWriteBlockedDataBuffered() const override;
  34   bool IsWriteBlocked() const override;
  35   void SetWritable() override;
  36
  37   void OnWriteComplete(int rv);
  38   void SetConnection(QuicConnection* connection) {
  39     connection_ = connection;
  40   }
  41
  42  protected:
  43   void set_write_blocked(bool is_blocked) {
  44     write_blocked_ = is_blocked;
  45   }
  46
  47  private:
  48   DatagramClientSocket* socket_;
  49   QuicConnection* connection_;
  50
  51   // Whether a write is currently in flight.
  52   bool write_blocked_;
  53
  54   base::WeakPtrFactory<QuicDefaultPacketWriter> weak_factory_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(QuicDefaultPacketWriter);
  57 };
  58
  59 }  // namespace net
  60
  61 #endif  // NET_QUIC_QUIC_DEFAULT_PACKET_WRITER_H_