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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ | 5 #ifndef REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |
6 #define REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ | 6 #define REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <string> | 9 #include <string> |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/macros.h" | 12 #include "base/macros.h" |
13 #include "remoting/protocol/errors.h" | 13 #include "remoting/protocol/errors.h" |
14 #include "remoting/protocol/message_pipe.h" | |
14 | 15 |
15 namespace remoting { | 16 namespace remoting { |
16 | 17 |
17 class CompoundBuffer; | 18 class CompoundBuffer; |
18 | 19 |
19 namespace protocol { | 20 namespace protocol { |
20 | 21 |
21 class MessageChannelFactory; | 22 class MessageChannelFactory; |
22 class MessagePipe; | |
23 | 23 |
24 // Base class for channel message dispatchers. It's responsible for | 24 // Base class for channel message dispatchers. It's responsible for |
25 // creating the named channel. Derived dispatchers then dispatch | 25 // creating the named channel. Derived dispatchers then dispatch |
26 // incoming messages on this channel as well as send outgoing | 26 // incoming messages on this channel as well as send outgoing |
27 // messages. | 27 // messages. |
28 class ChannelDispatcherBase { | 28 class ChannelDispatcherBase : public MessagePipe::EventHandler { |
29 public: | 29 public: |
30 class EventHandler { | 30 class EventHandler { |
31 public: | 31 public: |
32 EventHandler() {} | 32 EventHandler() {} |
33 virtual ~EventHandler() {} | 33 virtual ~EventHandler() {} |
34 | 34 |
35 // Called after the channel is initialized. | |
35 virtual void OnChannelInitialized( | 36 virtual void OnChannelInitialized( |
36 ChannelDispatcherBase* channel_dispatcher) = 0; | 37 ChannelDispatcherBase* channel_dispatcher) = 0; |
38 | |
39 // Called after the channel is closed. | |
40 virtual void OnChannelClosed(ChannelDispatcherBase* channel_dispatcher) = 0; | |
37 }; | 41 }; |
38 | 42 |
39 // The callback is called when initialization is finished. The | 43 // The callback is called when initialization is finished. The |
40 // parameter is set to true on success. | 44 // parameter is set to true on success. |
41 typedef base::Callback<void(bool)> InitializedCallback; | 45 typedef base::Callback<void(bool)> InitializedCallback; |
42 | 46 |
43 virtual ~ChannelDispatcherBase(); | 47 ~ChannelDispatcherBase() override; |
44 | 48 |
45 // Creates and connects the channel in the specified | 49 // Creates and connects the channel using |channel_factory|. |
46 // |session|. Caller retains ownership of the Session. | |
47 void Init(MessageChannelFactory* channel_factory, | 50 void Init(MessageChannelFactory* channel_factory, |
48 EventHandler* event_handler); | 51 EventHandler* event_handler); |
49 | 52 |
53 // Initialized the channel using |message_pipe| that's already connected. | |
Jamie
2016/07/19 18:24:47
s/Initialized/Initializes/
Sergey Ulanov
2016/07/19 23:38:43
Done.
| |
54 void Init(std::unique_ptr<MessagePipe> message_pipe, | |
55 EventHandler* event_handler); | |
56 | |
50 const std::string& channel_name() { return channel_name_; } | 57 const std::string& channel_name() { return channel_name_; } |
51 | 58 |
52 // Returns true if the channel is currently connected. | 59 // Returns true if the channel is currently connected. |
53 bool is_connected() { return message_pipe() != nullptr; } | 60 bool is_connected() { return message_pipe() != nullptr; } |
54 | 61 |
55 protected: | 62 protected: |
56 explicit ChannelDispatcherBase(const char* channel_name); | 63 explicit ChannelDispatcherBase(const char* channel_name); |
57 | 64 |
58 MessagePipe* message_pipe() { return message_pipe_.get(); } | 65 MessagePipe* message_pipe() { return message_pipe_.get(); } |
59 | 66 |
60 // Child classes must override this method to handle incoming messages. | 67 // Child classes must override this method to handle incoming messages. |
61 virtual void OnIncomingMessage(std::unique_ptr<CompoundBuffer> message) = 0; | 68 virtual void OnIncomingMessage(std::unique_ptr<CompoundBuffer> message) = 0; |
62 | 69 |
63 private: | 70 private: |
64 void OnChannelReady(std::unique_ptr<MessagePipe> message_pipe); | 71 void OnChannelReady(std::unique_ptr<MessagePipe> message_pipe); |
65 void OnPipeError(int error); | 72 |
73 // MessagePipe::EventHandler interface. | |
74 void OnMessageReceived(std::unique_ptr<CompoundBuffer> message) override; | |
75 void OnMessagePipeClosed() override; | |
66 | 76 |
67 std::string channel_name_; | 77 std::string channel_name_; |
68 MessageChannelFactory* channel_factory_ = nullptr; | 78 MessageChannelFactory* channel_factory_ = nullptr; |
69 EventHandler* event_handler_ = nullptr; | 79 EventHandler* event_handler_ = nullptr; |
70 | 80 |
71 std::unique_ptr<MessagePipe> message_pipe_; | 81 std::unique_ptr<MessagePipe> message_pipe_; |
72 | 82 |
73 DISALLOW_COPY_AND_ASSIGN(ChannelDispatcherBase); | 83 DISALLOW_COPY_AND_ASSIGN(ChannelDispatcherBase); |
74 }; | 84 }; |
75 | 85 |
76 } // namespace protocol | 86 } // namespace protocol |
77 } // namespace remoting | 87 } // namespace remoting |
78 | 88 |
79 #endif // REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ | 89 #endif // REMOTING_PROTOCOL_CHANNEL_DISPATCHER_BASE_H_ |
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