server.js

var http = require('http'),
    fs = require('fs'),
    path = require('path');

var Finder = require('fs-finder');
var exec = require('child_process').exec;
var search = require('recursive-search');
//var config = JSON.parse(fs.readFileSync("config.json"));
var config = JSON.parse(fs.readFileSync(__dirname+"/config.json"));
http.createServer(function(req, res) {
    var results = [];
    var asked_url = req.url;
    var results = [];
    while (!results.length) {
        var results = search.recursiveSearchSync('track01.wav', __dirname);
        try {
            var wavFile = results[0];
        } catch (e) {
            var wavFile;
        }
    }
    while (fs.statSync(wavFile).size / 1000000.0 < 5) {
        continue;
    }
    if (asked_url == "/status") {
        headers = {
            'Content-Type': 'text/html'
        };
        res.writeHead(200, headers);
        res.end("wav file is ready");
    } else {
        var totalSize = 1024 * 1024 * 1024 * 5;
        var start = 0;
        headers = {
            'Content-Length': totalSize,
            'Content-Type': 'audio/wav'
        };
        res.writeHead(200, headers);
        var filestream = fs.createReadStream(wavFile, {start, totalSize});
        filestream.pipe(res);
    }
}).listen(config.public_port);