macOS Java HTTP server not sending data

[MorphingDragon]

I'm trying to make a Java HTTP server to learn how to use Java sockets and I'm having a bit of an issue. The browser doesn't seem to receive any data! The issue seems to be in the println method sending the HTTP header, as everything else works fine so far.

class HTTPServerSession extends Thread {

    private Socket socket_ = null;

    public HTTPServerSession(Socket socket) {
        //Check the provided socket is not null
        if (socket == null) {
            throw new NullPointerException();
        }

        //Set socket variable
        socket_ = socket;
    }

    public void start() {
        try {
            //Create socket reader
            BufferedReader reader = new BufferedReader(new InputStreamReader(socket_.getInputStream()));

            //Create array of requests
            ArrayList<String> requests = new ArrayList<String>();

            //Start reading HTTP request
            while (true) {
                //Read request line
                String s = reader.readLine();

                //Print request
                System.out.println(s);

                //Add request line
                if (s.equals("")) {
                    break;
                } else {
                    requests.add(s);
                }
            }

            //Get file name
            String file = null;

            for (int i = 0; i < requests.size(); i++) {
                //Split line
                String request[] = requests.get(i).split(" ");

                //Get filename
                if (request[0].equals("GET")) {
                    file = request[1];
                    i = requests.size();
                    System.out.println(file);
                }
            }

            //Send request
            BufferedOutputStream writer = new BufferedOutputStream(socket_.getOutputStream());
            println(writer, "HTTP/1.1 200 OK");
            println(writer, "Content-Type: text/html");
            println(writer, "Content-Length: 18");
            println(writer, "");
            println(writer, "<p>Hello World</p>");
            
            
            //Try close the socket
            System.out.println("Socket closing");
            socket_.close();
            System.out.println("Socket closed");
        } catch (Exception e) {
            //Print error
            System.out.println(e);
            System.out.println(e.getStackTrace());
        }
    }

    private void println(BufferedOutputStream bos, String s)
            throws IOException {
        String news = s + "\r\n";
        byte[] array = news.getBytes();
        for (int i = 0; i < array.length; i++) {
            bos.write(array[i]);
        }
        return;
    }
}

 

[jiminaus]

Try flushing writer before closing the socket.

 

[MorphingDragon]

Try flushing writer before closing the socket.

Uhhhh I knew that

 

[chown33]

Try flushing writer before closing the socket.

Or close writer, not the socket.

Closing a stream will flush the stream first.