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1 // Copyright 2014 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 // Use the <code>chrome.bluetoothSocket</code> API to send and receive data | |
6 // to Bluetooth devices using RFCOMM and L2CAP connections. | |
7 namespace bluetoothSocket { | |
8 // The socket properties specified in the $ref:create or $ref:update | |
9 // function. Each property is optional. If a property value is not specified, | |
10 // a default value is used when calling $ref:create, or the existing value is | |
11 // preserved when calling $ref:update. | |
12 dictionary SocketProperties { | |
13 // Flag indicating whether the socket is left open when the event page of | |
14 // the application is unloaded (see <a | |
15 // href="http://developer.chrome.com/apps/app_lifecycle.html">Manage App | |
16 // Lifecycle</a>). The default value is <code>false.</code> When the | |
17 // application is loaded, any sockets previously opened with persistent=true | |
18 // can be fetched with $ref:getSockets. | |
19 boolean? persistent; | |
20 | |
21 // An application-defined string associated with the socket. | |
22 DOMString? name; | |
23 | |
24 // The size of the buffer used to receive data. The default value is 4096. | |
25 long? bufferSize; | |
26 }; | |
27 | |
28 // Result of <code>create</code> call. | |
29 dictionary CreateInfo { | |
30 // The ID of the newly created socket. Note that socket IDs created | |
31 // from this API are not compatible with socket IDs created from other APIs, | |
32 // such as the <code>$(ref:sockets.tcp)</code> API. | |
33 long socketId; | |
34 }; | |
35 | |
36 // Callback from the <code>create</code> method. | |
37 // |createInfo| : The result of the socket creation. | |
38 callback CreateCallback = void (CreateInfo createInfo); | |
39 | |
40 // Callback from the <code>update</code> method. | |
41 callback UpdateCallback = void (); | |
42 | |
43 // Callback from the <code>setPaused</code> method. | |
44 callback SetPausedCallback = void (); | |
45 | |
46 // Options that may be passed to the <code>listenUsingRfcomm</code> and | |
47 // <code>listenUsingL2cap</code> methods. Each property is optional with a | |
48 // default being used if not specified. | |
49 dictionary ListenOptions { | |
50 // The RFCOMM Channel used by <code>listenUsingRfcomm</code>. If specified, | |
51 // this channel must not be previously in use or the method call will fail. | |
52 // When not specified, an unused channel will be automatically allocated. | |
53 long? channel; | |
54 | |
55 // The L2CAP PSM used by <code>listenUsingL2cap</code>. If specified, this | |
56 // PSM must not be previously in use or the method call with fail. When | |
57 // not specified, an unused PSM will be automatically allocated. | |
58 long? psm; | |
59 | |
60 // Length of the socket's listen queue. The default value depends on the | |
61 // operating system's host subsystem. | |
62 long? backlog; | |
63 }; | |
64 | |
65 // Callback from the <code>listenUsingRfcomm</code> and | |
66 // <code>listenUsingL2cap</code> methods. | |
67 callback ListenCallback = void (); | |
68 | |
69 // Callback from the <code>connect</code> method. | |
70 callback ConnectCallback = void (); | |
71 | |
72 // Callback from the <code>disconnect</code> method. | |
73 callback DisconnectCallback = void (); | |
74 | |
75 // Callback from the <code>close</code> method. | |
76 callback CloseCallback = void (); | |
77 | |
78 // Callback from the <code>send</code> method. | |
79 // |bytesSent| : The number of bytes sent. | |
80 callback SendCallback = void (long bytesSent); | |
81 | |
82 // Result of the <code>getInfo</code> method. | |
83 dictionary SocketInfo { | |
84 // The socket identifier. | |
85 long socketId; | |
86 | |
87 // Flag indicating if the socket remains open when the event page of the | |
88 // application is unloaded (see <code>SocketProperties.persistent</code>). | |
89 // The default value is "false". | |
90 boolean persistent; | |
91 | |
92 // Application-defined string associated with the socket. | |
93 DOMString? name; | |
94 | |
95 // The size of the buffer used to receive data. If no buffer size has been | |
96 // specified explictly, the value is not provided. | |
97 long? bufferSize; | |
98 | |
99 // Flag indicating whether a connected socket blocks its peer from sending | |
100 // more data, or whether connection requests on a listening socket are | |
101 // dispatched through the <code>onAccept</code> event or queued up in the | |
102 // listen queue backlog. | |
103 // See <code>setPaused</code>. The default value is "false". | |
104 boolean paused; | |
105 | |
106 // Flag indicating whether the socket is connected to a remote peer. | |
107 boolean connected; | |
108 | |
109 // If the underlying socket is connected, contains the Bluetooth address of | |
110 // the device it is connected to. | |
111 DOMString? address; | |
112 | |
113 // If the underlying socket is connected, contains information about the | |
114 // service UUID it is connected to, otherwise if the underlying socket is | |
115 // listening, contains information about the service UUID it is listening | |
116 // on. | |
117 DOMString? uuid; | |
118 }; | |
119 | |
120 // Callback from the <code>getInfo</code> method. | |
121 // |socketInfo| : Object containing the socket information. | |
122 callback GetInfoCallback = void (SocketInfo socketInfo); | |
123 | |
124 // Callback from the <code>getSockets</code> method. | |
125 // |socketInfos| : Array of object containing socket information. | |
126 callback GetSocketsCallback = void (SocketInfo[] sockets); | |
127 | |
128 // Data from an <code>onAccept</code> event. | |
129 dictionary AcceptInfo { | |
130 // The server socket identifier. | |
131 long socketId; | |
132 | |
133 // The client socket identifier, i.e. the socket identifier of the newly | |
134 // established connection. This socket identifier should be used only with | |
135 // functions from the <code>chrome.bluetoothSocket</code> namespace. Note | |
136 // the client socket is initially paused and must be explictly un-paused by | |
137 // the application to start receiving data. | |
138 long clientSocketId; | |
139 }; | |
140 | |
141 enum AcceptError { | |
142 // A system error occurred and the connection may be unrecoverable. | |
143 system_error, | |
144 | |
145 // The socket is not listening. | |
146 not_listening | |
147 }; | |
148 | |
149 // Data from an <code>onAcceptError</code> event. | |
150 dictionary AcceptErrorInfo { | |
151 // The server socket identifier. | |
152 long socketId; | |
153 | |
154 // The error message. | |
155 DOMString errorMessage; | |
156 | |
157 // An error code indicating what went wrong. | |
158 AcceptError error; | |
159 }; | |
160 | |
161 // Data from an <code>onReceive</code> event. | |
162 dictionary ReceiveInfo { | |
163 // The socket identifier. | |
164 long socketId; | |
165 | |
166 // The data received, with a maxium size of <code>bufferSize</code>. | |
167 ArrayBuffer data; | |
168 }; | |
169 | |
170 enum ReceiveError { | |
171 // The connection was disconnected. | |
172 disconnected, | |
173 | |
174 // A system error occurred and the connection may be unrecoverable. | |
175 system_error, | |
176 | |
177 // The socket has not been connected. | |
178 not_connected | |
179 }; | |
180 | |
181 // Data from an <code>onReceiveError</code> event. | |
182 dictionary ReceiveErrorInfo { | |
183 // The socket identifier. | |
184 long socketId; | |
185 | |
186 // The error message. | |
187 DOMString errorMessage; | |
188 | |
189 // An error code indicating what went wrong. | |
190 ReceiveError error; | |
191 }; | |
192 | |
193 // These functions all report failures via chrome.runtime.lastError. | |
194 interface Functions { | |
195 // Creates a Bluetooth socket. | |
196 // |properties| : The socket properties (optional). | |
197 // |callback| : Called when the socket has been created. | |
198 static void create(optional SocketProperties properties, | |
199 CreateCallback callback); | |
200 | |
201 // Updates the socket properties. | |
202 // |socketId| : The socket identifier. | |
203 // |properties| : The properties to update. | |
204 // |callback| : Called when the properties are updated. | |
205 static void update(long socketId, | |
206 SocketProperties properties, | |
207 optional UpdateCallback callback); | |
208 | |
209 // Enables or disables a connected socket from receiving messages from its | |
210 // peer, or a listening socket from accepting new connections. The default | |
211 // value is "false". Pausing a connected socket is typically used by an | |
212 // application to throttle data sent by its peer. When a connected socket | |
213 // is paused, no <code>onReceive</code>event is raised. When a socket is | |
214 // connected and un-paused, <code>onReceive</code> events are raised again | |
215 // when messages are received. When a listening socket is paused, new | |
216 // connections are accepted until its backlog is full then additional | |
217 // connection requests are refused. <code>onAccept</code> events are raised | |
218 // only when the socket is un-paused. | |
219 static void setPaused(long socketId, | |
220 boolean paused, | |
221 optional SetPausedCallback callback); | |
222 | |
223 // Listen for connections using the RFCOMM protocol. | |
224 // |socketId| : The socket identifier. | |
225 // |uuid| : Service UUID to listen on. | |
226 // |options| : Optional additional options for the service. | |
227 // |callback| : Called when listen operation completes. | |
228 static void listenUsingRfcomm(long socketId, | |
229 DOMString uuid, | |
230 optional ListenOptions options, | |
231 ListenCallback callback); | |
232 | |
233 // Listen for connections using the L2CAP protocol. | |
234 // |socketId| : The socket identifier. | |
235 // |uuid| : Service UUID to listen on. | |
236 // |options| : Optional additional options for the service. | |
237 // |callback| : Called when listen operation completes. | |
238 static void listenUsingL2cap(long socketId, | |
239 DOMString uuid, | |
240 optional ListenOptions options, | |
241 ListenCallback callback); | |
242 | |
243 // Connects the socket to a remote Bluetooth device. When the | |
244 // <code>connect</code> operation completes successfully, | |
245 // <code>onReceive</code> events are raised when data is received from the | |
246 // peer. If a network error occur while the runtime is receiving packets, | |
247 // a <code>onReceiveError</code> event is raised, at which point no more | |
248 // <code>onReceive</code> event will be raised for this socket until the | |
249 // <code>setPaused(false)</code> method is called. | |
250 // |socketId| : The socket identifier. | |
251 // |address| : The address of the Bluetooth device. | |
252 // |uuid| : The UUID of the service to connect to. | |
253 // |callback| : Called when the connect attempt is complete. | |
254 static void connect(long socketId, | |
255 DOMString address, | |
256 DOMString uuid, | |
257 ConnectCallback callback); | |
258 | |
259 // Disconnects the socket. The socket identifier remains valid. | |
260 // |socketId| : The socket identifier. | |
261 // |callback| : Called when the disconnect attempt is complete. | |
262 static void disconnect(long socketId, | |
263 optional DisconnectCallback callback); | |
264 | |
265 // Disconnects and destroys the socket. Each socket created should be | |
266 // closed after use. The socket id is no longer valid as soon at the | |
267 // function is called. However, the socket is guaranteed to be closed only | |
268 // when the callback is invoked. | |
269 // |socketId| : The socket identifier. | |
270 // |callback| : Called when the <code>close</code> operation completes. | |
271 static void close(long socketId, | |
272 optional CloseCallback callback); | |
273 | |
274 // Sends data on the given Bluetooth socket. | |
275 // |socketId| : The socket identifier. | |
276 // |data| : The data to send. | |
277 // |callback| : Called with the number of bytes sent. | |
278 static void send(long socketId, | |
279 ArrayBuffer data, | |
280 optional SendCallback callback); | |
281 | |
282 // Retrieves the state of the given socket. | |
283 // |socketId| : The socket identifier. | |
284 // |callback| : Called when the socket state is available. | |
285 static void getInfo(long socketId, | |
286 GetInfoCallback callback); | |
287 | |
288 // Retrieves the list of currently opened sockets owned by the application. | |
289 // |callback| : Called when the list of sockets is available. | |
290 static void getSockets(GetSocketsCallback callback); | |
291 }; | |
292 | |
293 interface Events { | |
294 // Event raised when a connection has been established for a given socket. | |
295 // |info| : The event data. | |
296 static void onAccept(AcceptInfo info); | |
297 | |
298 // Event raised when a network error occurred while the runtime was waiting | |
299 // for new connections on the given socket. Once this event is raised, the | |
300 // socket is set to <code>paused</code> and no more <code>onAccept</code> | |
301 // events are raised for this socket. | |
302 // |info| : The event data. | |
303 static void onAcceptError(AcceptErrorInfo info); | |
304 | |
305 // Event raised when data has been received for a given socket. | |
306 // |info| : The event data. | |
307 static void onReceive(ReceiveInfo info); | |
308 | |
309 // Event raised when a network error occured while the runtime was waiting | |
310 // for data on the socket. Once this event is raised, the socket is set to | |
311 // <code>paused</code> and no more <code>onReceive</code> events are raised | |
312 // for this socket. | |
313 // |info| : The event data. | |
314 static void onReceiveError(ReceiveErrorInfo info); | |
315 }; | |
316 }; | |
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