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// Copyright 2014 The Chromium Authors
// 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_NET_H_
#define DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_NET_H_
#include <memory>
#include <string>
#include "base/containers/queue.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "device/bluetooth/bluetooth_socket.h"
#include "device/bluetooth/bluetooth_socket_thread.h"
#include "net/socket/tcp_socket.h"
namespace net {
class IOBuffer;
class IOBufferWithSize;
} // namespace net
namespace device {
// This class is a base-class for implementations of BluetoothSocket that can
// use net::TCPSocket. All public methods (including the factory method) must
// be called on the UI thread, while underlying socket operations are
// performed on a separate thread.
class BluetoothSocketNet : public BluetoothSocket {
public:
BluetoothSocketNet(const BluetoothSocketNet&) = delete;
BluetoothSocketNet& operator=(const BluetoothSocketNet&) = delete;
// BluetoothSocket:
void Disconnect(base::OnceClosure callback) override;
void Receive(int buffer_size,
ReceiveCompletionCallback success_callback,
ReceiveErrorCompletionCallback error_callback) override;
void Send(scoped_refptr<net::IOBuffer> buffer,
int buffer_size,
SendCompletionCallback success_callback,
ErrorCompletionCallback error_callback) override;
protected:
BluetoothSocketNet(scoped_refptr<base::SequencedTaskRunner> ui_task_runner,
scoped_refptr<BluetoothSocketThread> socket_thread);
~BluetoothSocketNet() override;
// Resets locally held data after a socket is closed. Default implementation
// does nothing, subclasses may override.
virtual void ResetData();
// Methods for subclasses to obtain the members.
scoped_refptr<base::SequencedTaskRunner> ui_task_runner() const {
return ui_task_runner_;
}
scoped_refptr<BluetoothSocketThread> socket_thread() const {
return socket_thread_;
}
net::TCPSocket* tcp_socket() { return tcp_socket_.get(); }
void ResetTCPSocket();
void SetTCPSocket(std::unique_ptr<net::TCPSocket> tcp_socket);
void PostSuccess(base::OnceClosure callback);
void PostErrorCompletion(ErrorCompletionCallback callback,
const std::string& error);
private:
struct WriteRequest {
WriteRequest();
~WriteRequest();
scoped_refptr<net::IOBuffer> buffer;
int buffer_size;
SendCompletionCallback success_callback;
ErrorCompletionCallback error_callback;
};
void DoDisconnect(base::OnceClosure callback);
void DoReceive(int buffer_size,
ReceiveCompletionCallback success_callback,
ReceiveErrorCompletionCallback error_callback);
void OnSocketReadComplete(ReceiveCompletionCallback success_callback,
ReceiveErrorCompletionCallback error_callback,
int read_result);
void DoSend(scoped_refptr<net::IOBuffer> buffer,
int buffer_size,
SendCompletionCallback success_callback,
ErrorCompletionCallback error_callback);
void SendFrontWriteRequest();
void OnSocketWriteComplete(SendCompletionCallback success_callback,
ErrorCompletionCallback error_callback,
int send_result);
void PostReceiveCompletion(ReceiveCompletionCallback callback,
int io_buffer_size,
scoped_refptr<net::IOBuffer> io_buffer);
void PostReceiveErrorCompletion(ReceiveErrorCompletionCallback callback,
ErrorReason reason,
const std::string& error_message);
void PostSendCompletion(SendCompletionCallback callback, int bytes_written);
scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
scoped_refptr<BluetoothSocketThread> socket_thread_;
std::unique_ptr<net::TCPSocket> tcp_socket_;
scoped_refptr<net::IOBufferWithSize> read_buffer_;
base::queue<std::unique_ptr<WriteRequest>> write_queue_;
std::unique_ptr<WriteRequest> pending_write_request_;
};
} // namespace device
#endif // DEVICE_BLUETOOTH_BLUETOOTH_SOCKET_NET_H_
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