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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 // Use the <code>chrome.sockets.tcpServer</code> API to create server | |
6 // applications using TCP connections. This API supersedes the TCP functionality | |
7 // previously found in the <code>chrome.socket</code> API. | |
8 namespace sockets.tcpServer { | |
9 // The socket properties specified in the <code>create</code> or | |
10 // <code>update</code> function. Each property is optional. If a property | |
11 // value is not specified, a default value is used when calling | |
12 // <code>create</code>, or the existing value if preserved when calling | |
13 // <code>update</code>. | |
14 dictionary SocketProperties { | |
15 // Flag indicating if the socket remains open when the event page of the | |
16 // application is unloaded (see | |
17 // <a href="http://developer.chrome.com/apps/app_lifecycle.html">Manage App | |
18 // Lifecycle</a>). The default value is "false." When the application is | |
19 // loaded, any sockets previously opened with persistent=true can be fetched | |
20 // with <code>getSockets</code>. | |
21 boolean? persistent; | |
22 | |
23 // An application-defined string associated with the socket. | |
24 DOMString? name; | |
25 }; | |
26 | |
27 // Result of <code>create</code> call. | |
28 dictionary CreateInfo { | |
29 // The ID of the newly created server socket. Note that socket IDs created | |
30 // from this API are not compatible with socket IDs created from other APIs, | |
31 // such as the deprecated <code>$ref:socket</code> API. | |
32 long socketId; | |
33 }; | |
34 | |
35 // Callback from the <code>create</code> method. | |
36 // |createInfo| : The result of the socket creation. | |
37 callback CreateCallback = void (CreateInfo createInfo); | |
38 | |
39 // Callback from the <code>listen</code> method. | |
40 // |result| : The result code returned from the underlying network call. | |
41 // A negative value indicates an error. | |
42 callback ListenCallback = void (long result); | |
43 | |
44 // Callback from the <code>disconnect</code> method. | |
45 callback DisconnectCallback = void (); | |
46 | |
47 // Callback from the <code>close</code> method. | |
48 callback CloseCallback = void (); | |
49 | |
50 // Callback from the <code>update</code> method. | |
51 callback UpdateCallback = void (); | |
52 | |
53 // Callback from the <code>setPaused</code> method. | |
54 callback SetPausedCallback = void (); | |
55 | |
56 // Result of the <code>getInfo</code> method. | |
57 dictionary SocketInfo { | |
58 // The socket identifier. | |
59 long socketId; | |
60 | |
61 // Flag indicating if the socket remains open when the event page of the | |
62 // application is unloaded (see <code>SocketProperties.persistent</code>). | |
63 // The default value is "false". | |
64 boolean persistent; | |
65 | |
66 // Application-defined string associated with the socket. | |
67 DOMString? name; | |
68 | |
69 // Flag indicating whether connection requests on a listening socket are | |
70 // dispatched through the <code>onAccept</code> event or queued up in the | |
71 // listen queue backlog. | |
72 // See <code>setPaused</code>. The default value is "false". | |
73 boolean paused; | |
74 | |
75 // If the socket is listening, contains its local IPv4/6 address. | |
76 DOMString? localAddress; | |
77 | |
78 // If the socket is listening, contains its local port. | |
79 long? localPort; | |
80 }; | |
81 | |
82 // Callback from the <code>getInfo</code> method. | |
83 // |socketInfo| : Object containing the socket information. | |
84 callback GetInfoCallback = void (SocketInfo socketInfo); | |
85 | |
86 // Callback from the <code>getSockets</code> method. | |
87 // |socketInfos| : Array of object containing socket information. | |
88 callback GetSocketsCallback = void (SocketInfo[] socketInfos); | |
89 | |
90 // Data from an <code>onAccept</code> event. | |
91 dictionary AcceptInfo { | |
92 // The server socket identifier. | |
93 long socketId; | |
94 | |
95 // The client socket identifier, i.e. the socket identifier of the newly | |
96 // established connection. This socket identifier should be used only with | |
97 // functions from the <code>chrome.sockets.tcp</code> namespace. Note the | |
98 // client socket is initially paused and must be explictly un-paused by the | |
99 // application to start receiving data. | |
100 long clientSocketId; | |
101 }; | |
102 | |
103 // Data from an <code>onAcceptError</code> event. | |
104 dictionary AcceptErrorInfo { | |
105 // The server socket identifier. | |
106 long socketId; | |
107 | |
108 // The result code returned from the underlying network call. | |
109 long resultCode; | |
110 }; | |
111 | |
112 interface Functions { | |
113 // Creates a TCP server socket. | |
114 // |properties| : The socket properties (optional). | |
115 // |callback| : Called when the socket has been created. | |
116 static void create(optional SocketProperties properties, | |
117 CreateCallback callback); | |
118 | |
119 // Updates the socket properties. | |
120 // |socketId| : The socket identifier. | |
121 // |properties| : The properties to update. | |
122 // |callback| : Called when the properties are updated. | |
123 static void update(long socketId, | |
124 SocketProperties properties, | |
125 optional UpdateCallback callback); | |
126 | |
127 // Enables or disables a listening socket from accepting new connections. | |
128 // When paused, a listening socket accepts new connections until its backlog | |
129 // (see <code>listen</code> function) is full then refuses additional | |
130 // connection requests. <code>onAccept</code> events are raised only when | |
131 // the socket is un-paused. | |
132 static void setPaused(long socketId, | |
133 boolean paused, | |
134 optional SetPausedCallback callback); | |
135 | |
136 // Listens for connections on the specified port and address. | |
137 // If the port/address is in use, the callback indicates a failure. | |
138 // |socketId| : The socket identifier. | |
139 // |address| : The address of the local machine. | |
140 // |port| : The port of the local machine. | |
141 // |backlog| : Length of the socket's listen queue. The default value | |
142 // depends on the Operating System (SOMAXCONN), which ensures a reasonable | |
143 // queue length for most applications. | |
144 // |callback| : Called when listen operation completes. | |
145 static void listen(long socketId, | |
146 DOMString address, | |
147 long port, | |
148 optional long backlog, | |
149 ListenCallback callback); | |
150 | |
151 // Disconnects the listening socket, i.e. stops accepting new connections | |
152 // and releases the address/port the socket is bound to. The socket | |
153 // identifier remains valid, e.g. it can be used with <code>listen</code> to | |
154 // accept connections on a new port and address. | |
155 // |socketId| : The socket identifier. | |
156 // |callback| : Called when the disconnect attempt is complete. | |
157 static void disconnect(long socketId, | |
158 optional DisconnectCallback callback); | |
159 | |
160 // Disconnects and destroys the socket. Each socket created should be | |
161 // closed after use. The socket id is no longer valid as soon at the | |
162 // function is called. However, the socket is guaranteed to be closed only | |
163 // when the callback is invoked. | |
164 // |socketId| : The socket identifier. | |
165 // |callback| : Called when the <code>close</code> operation completes. | |
166 static void close(long socketId, | |
167 optional CloseCallback callback); | |
168 | |
169 // Retrieves the state of the given socket. | |
170 // |socketId| : The socket identifier. | |
171 // |callback| : Called when the socket state is available. | |
172 static void getInfo(long socketId, | |
173 GetInfoCallback callback); | |
174 | |
175 // Retrieves the list of currently opened sockets owned by the application. | |
176 // |callback| : Called when the list of sockets is available. | |
177 static void getSockets(GetSocketsCallback callback); | |
178 }; | |
179 | |
180 interface Events { | |
181 // Event raised when a connection has been made to the server socket. | |
182 // |info| : The event data. | |
183 static void onAccept(AcceptInfo info); | |
184 | |
185 // Event raised when a network error occured while the runtime was waiting | |
186 // for new connections on the socket address and port. Once this event is | |
187 // raised, the socket is set to <code>paused</code> and no more | |
188 // <code>onAccept</code> events are raised for this socket until the socket | |
189 // is resumed. | |
190 // |info| : The event data. | |
191 static void onAcceptError(AcceptErrorInfo info); | |
192 }; | |
193 }; | |
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