stream.js

this.Server.prototype.stream = function (pathname, files, buffer, res, callback) {
    (function streamFile(files, offset) {
        var file = files.shift();

        if (file) {
            // Stream the file to the client
            fs.createReadStream(path.join(pathname || '.', file), {
                flags: 'r',
                encoding: 'binary',
                mode: 0666,
                bufferSize: 4096
            }).addListener('data', function (chunk) {
                buffer.write(chunk, offset, 0);
                res.write   (chunk, 'binary');
                offset    += chunk.length;
            }).addListener('close', function () {
                streamFile(files, offset);
            }).addListener('error', function (err) {
                callback(err);
                sys.error(err);
            });
        } else {
            res.end();
            callback(null, buffer, offset);
        }
    })(files.slice(0), 0);
};