项目需求，PC通过IP地址访问静态网页，网页提供文件下载，文件过大，直接oom，求老师指导

public class ClienDownloadService extends Service {
    private ExecutorService threadPool;
    private ServerSocket serverSocket;
    private InetSocketAddress address;
    private boolean isEnable;

    public IBinder onBind(Intent intent) {
        return null;
    }

    public void onCreate() {
        super.onCreate();
        initPlatfrom();
        startAsync();
    }

    public void initPlatfrom() {
        threadPool = Executors.newCachedThreadPool();
    }

    private void startAsync() {
        isEnable = true;
        new Thread(new Runnable() {

            public void run() {
                try {
                    address = new InetSocketAddress(8098);
                    serverSocket = new ServerSocket();
                    serverSocket.bind(address);
                    while (isEnable) {
                        final Socket socket = serverSocket.accept();
                        threadPool.execute(new Runnable() {
                            public void run() {
                                try {
                                    buileRemoteSocket(socket);
                                } catch (Exception e) {
                                    e.printStackTrace();
                                }
                            }
                        });
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

    private void buileRemoteSocket(Socket socket) throws Exception {
        InputStream in = socket.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        String line = "";
        while ((line = reader.readLine()) != null) {
            if (line.startsWith("GET")) {
                String uri = line.split(" ")[1];
                response(socket, uri);
            }
        }
    }

    public void response(Socket socket, String assetsPath) throws Exception {
        assetsPath = assetsPath.substring(1);
        if (assetsPath.equals("")) {
            assetsPath = "index.html";
        }
        InputStream in = getAssets().open(assetsPath);
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        byte[] buffer = new byte[8192];
        int len = 0;
        while ((len = in.read(buffer)) != -1) {
            bos.write(buffer, 0, len);
        }
        byte[] raw = bos.toByteArray();

        in.close();

        OutputStream nos = socket.getOutputStream();
        PrintStream printer = new PrintStream(nos);
        printer.println("HTTP/1.1 200 OK");
        printer.println("Content-length:" + raw.length);
        if (assetsPath.endsWith(".html")) {
            printer.println("Content-Type:text/html");
        } else if (assetsPath.endsWith(".js")) {
            printer.println("Content-Type:text/js");
        } else if (assetsPath.endsWith(".css")) {
            printer.println("Content-Type:text/css");
        } else if (assetsPath.endsWith(".jpg")) {
            printer.println("Content-Type:text/jpg");
        } else if (assetsPath.endsWith(".png")) {
            printer.println("Content-Type:text/png");
        }
        printer.println();
        printer.write(raw);
        printer.flush();
        printer.close();
    }

    public void onDestroy() {
        super.onDestroy();
        stopAsync();
    }

    public void stopAsync() {
        isEnable = false;
        try {
            serverSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}