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// Copyright (c) 2012 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 DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_WIN_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_WIN_H_

#include <WinSock2.h>

#include <string>

#include "base/memory/ref_counted.h"
#include "device/bluetooth/bluetooth_adapter.h"
#include "device/bluetooth/bluetooth_service_record_win.h"
#include "device/bluetooth/bluetooth_socket.h"
#include "device/bluetooth/bluetooth_socket_net.h"
#include "device/bluetooth/bluetooth_uuid.h"
#include "net/base/ip_endpoint.h"
#include "net/socket/tcp_socket.h"

namespace device {

class BluetoothAdapter;
class BluetoothDeviceWin;

// The BluetoothSocketWin class implements BluetoothSocket for the Microsoft
// Windows platform.
class BluetoothSocketWin : public BluetoothSocketNet {
 public:
  static scoped_refptr<BluetoothSocketWin> CreateBluetoothSocket(
      scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
      scoped_refptr<BluetoothSocketThread> socket_thread);

  // Connect to the peer device and calls |success_callback| when the
  // connection has been established successfully. If an error occurs, calls
  // |error_callback| with a system error message.
  void Connect(const BluetoothDeviceWin* device,
               const BluetoothUUID& uuid,
               const base::Closure& success_callback,
               const ErrorCompletionCallback& error_callback);

  // Listens using this socket using an RFCOMM service published as UUID |uuid|
  // with Channel |options.channel|, or an automatically allocated Channel if
  // |options.channel| is null. |success_callback| will be called if the service
  // is successfully registered, |error_callback| on failure with a message
  // explaining the cause.
  void Listen(scoped_refptr<BluetoothAdapter> adapter,
              const BluetoothUUID& uuid,
              const BluetoothAdapter::ServiceOptions& options,
              const base::Closure& success_callback,
              const ErrorCompletionCallback& error_callback);

  // BluetoothSocketNet:
  void ResetData() override;

  // BluetoothSocket:
  void Accept(const AcceptCompletionCallback& success_callback,
              const ErrorCompletionCallback& error_callback) override;

 protected:
  ~BluetoothSocketWin() override;

 private:
  struct ServiceRegData;

  BluetoothSocketWin(scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
                     scoped_refptr<BluetoothSocketThread> socket_thread);

  void DoConnect(const base::Closure& success_callback,
                 const ErrorCompletionCallback& error_callback);
  void DoListen(const BluetoothUUID& uuid,
      int rfcomm_channel,
      const base::Closure& success_callback,
      const ErrorCompletionCallback& error_callback);
  void DoAccept(const AcceptCompletionCallback& success_callback,
                const ErrorCompletionCallback& error_callback);
  void OnAcceptOnSocketThread(const AcceptCompletionCallback& success_callback,
                              const ErrorCompletionCallback& error_callback,
                              int accept_result);
  void OnAcceptOnUI(scoped_ptr<net::TCPSocket> accept_socket,
                    const net::IPEndPoint& peer_address,
                    const AcceptCompletionCallback& success_callback,
                    const ErrorCompletionCallback& error_callback);

  std::string device_address_;
  bool supports_rfcomm_;
  uint8 rfcomm_channel_;
  BTH_ADDR bth_addr_;

  // Data members below are only used when listening.
  scoped_refptr<device::BluetoothAdapter> adapter_;
  scoped_ptr<ServiceRegData> service_reg_data_;
  scoped_ptr<net::TCPSocket> accept_socket_;
  net::IPEndPoint accept_address_;

  DISALLOW_COPY_AND_ASSIGN(BluetoothSocketWin);
};

}  // namespace device

#endif  // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_WIN_H_