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117 行
3.3 KiB
117 行
3.3 KiB
var LibraryWebSockets = {
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$webSocketInstances: [],
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SocketCreate: function(url, protocols)
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{
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var str = Pointer_stringify(url);
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var prot = Pointer_stringify(protocols);
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var socket = {
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socket: new WebSocket(str, [prot]),
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buffer: new Uint8Array(0),
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error: null,
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messages: []
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}
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socket.socket.binaryType = 'arraybuffer';
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socket.socket.onmessage = function (e) {
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// if (e.data instanceof Blob)
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// {
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// var reader = new FileReader();
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// reader.addEventListener("loadend", function() {
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// var array = new Uint8Array(reader.result);
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// socket.messages.push(array);
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// });
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// reader.readAsArrayBuffer(e.data);
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// }
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if (e.data instanceof ArrayBuffer)
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{
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var array = new Uint8Array(e.data);
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socket.messages.push(array);
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}
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};
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socket.socket.onclose = function (e) {
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if (e.code != 1000)
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{
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if (e.reason != null && e.reason.length > 0)
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socket.error = e.reason;
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else
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{
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switch (e.code)
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{
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case 1001:
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socket.error = "Endpoint going away.";
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break;
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case 1002:
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socket.error = "Protocol error.";
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break;
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case 1003:
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socket.error = "Unsupported message.";
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break;
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case 1005:
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socket.error = "No status.";
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break;
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case 1006:
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socket.error = "Abnormal disconnection.";
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break;
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case 1009:
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socket.error = "Data frame too large.";
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break;
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default:
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socket.error = "Error "+e.code;
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}
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}
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}
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}
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var instance = webSocketInstances.push(socket) - 1;
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return instance;
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},
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SocketState: function (socketInstance)
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{
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var socket = webSocketInstances[socketInstance];
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return socket.socket.readyState;
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},
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SocketError: function (socketInstance, ptr, bufsize)
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{
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var socket = webSocketInstances[socketInstance];
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if (socket.error == null)
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return 0;
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var str = socket.error.slice(0, Math.max(0, bufsize - 1));
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writeStringToMemory(str, ptr, false);
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return 1;
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},
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SocketSend: function (socketInstance, ptr, length)
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{
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var socket = webSocketInstances[socketInstance];
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socket.socket.send (HEAPU8.buffer.slice(ptr, ptr+length));
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},
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SocketRecvLength: function(socketInstance)
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{
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var socket = webSocketInstances[socketInstance];
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if (socket.messages.length == 0)
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return 0;
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return socket.messages[0].length;
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},
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SocketRecv: function (socketInstance, ptr, length)
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{
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var socket = webSocketInstances[socketInstance];
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if (socket.messages.length == 0)
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return 0;
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if (socket.messages[0].length > length)
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return 0;
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HEAPU8.set(socket.messages[0], ptr);
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socket.messages = socket.messages.slice(1);
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},
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SocketClose: function (socketInstance)
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{
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var socket = webSocketInstances[socketInstance];
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socket.socket.close();
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}
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};
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autoAddDeps(LibraryWebSockets, '$webSocketInstances');
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mergeInto(LibraryManager.library, LibraryWebSockets);
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