73 lines
1.6 KiB
JavaScript
73 lines
1.6 KiB
JavaScript
#!/usr/bin/env node
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const commands = require("./commands");
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function log(...args) {
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console.log(Date.now(), ...args);
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}
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function initConnection(ws, server, port) {
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log(`ws connection accepted, connecting to ${server}:${port}`);
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let mpd = new (require("net").Socket)();
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mpd.setTimeout(0);
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mpd.connect(port, server);
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let commandQueue = [];
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let command = null;
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function waitForCommand(cmd) {
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command = cmd;
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cmd.on("done", data => {
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log("ws <--", data);
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ws.send(JSON.stringify(data));
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command = null;
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processQueue();
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});
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}
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function processQueue() {
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if (command || !commandQueue.length) { return; }
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let cmd = commands.create(mpd, commandQueue.shift());
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waitForCommand(cmd);
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}
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ws.on("message", message => {
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log("ws -->", message.utf8Data);
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commandQueue.push(message.utf8Data);
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processQueue();
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});
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ws.on("close", (reasonCode, description) => {
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log(`ws ${ws.remoteAddress} disconnected`);
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mpd.end();
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});
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mpd.on("close", () => {
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log("mpd disconnected");
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ws.close();
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});
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waitForCommand(commands.welcome(mpd));
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}
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function onRequest(request) {
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let s = request.resourceURL.query.server || "";
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let r = s.match(/^([^:]+)(:([0-9]+))?$/);
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if (!r) { return request.reject(); }
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let connection = request.accept(null, request.origin);
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initConnection(connection, r[1], r[3] || 6600);
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}
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exports.ws2mpd = function(httpServer) {
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function ready() { log("ws2mpd attached to a http server", httpServer.address()); }
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(httpServer.listening ? ready() : httpServer.on("listening", ready));
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let wsServer = new (require("websocket").server)({
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httpServer,
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autoAcceptConnections: false
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});
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wsServer.on("request", onRequest);
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}
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