Through what to implement a very simple network game?

Question

Java

It is necessary to make a very simple network game (tic-tac-toe in the console). Through what will be the easiest way to make network interaction? Maybe spring? I'm not sure that I want to connect sockets here ... There are more problems with them than good. I want a level of abstraction.
upd. I was advised here by such libs: Mina and Netty. Maybe try them ... Googled, Mina certainly looks much simpler. Netty is a bit complicated.

Answer 1

You have an extremely simple game of tic-tac-toe. It turns out for a network game you need to send the following:
- New game event; //Package id 1
- Set tic/tac toe event(int "x" , "y", and for example boolean type isCircle)//Package id 2
- win event. //Package ID 3
- Error event (bad move) //Package ID 4
I.e. There are 4 types of data in total.
The network packet can be represented as follows:

"number_package_type_id; optional data; optional data"
; - delimiter(string delimiter)

Server side port=7777:

ServerSocket ss = new ServerSocket(7777); //создали сервер
Socket socket = ss.accept();//Ждем клиента
//Сюда попадаем только когда подключился клиента
DataInputStream in = new DataInputStream(socket.getInputStream(); //Получаем поток ввода
DataOutputStream out = new DataOutputStream(socket.getOutputStream()); //Получаем поток вывода
String line = null;
while(true) {
     line = in.readUTF(); // Тут ждем и получаем строку от клиента
     String[] data = line.split(";"); //Разделяем полученную строку в массив строк
     if(data[0].equals("1")){
     //Сбрасываем уровень начинаем новую игру}
     if(data[0].equals("2")){
     //Ставим крестик\нолик по координатам
     int x =data[1]; int y=data[2];boolean isCircle=data[3] //Не забудь типы привести, ну там Integer.parse(data[номер])
     //Ну возможно отправить ответ клиенту
    out.writeUTF(line); // шлем его же строку обратно чтобы клиент у себя отрисовал фигуру или пакет с ошибкой
    out.flush(); // заканчиваем передачу в поток.
     }
     ....
}

At the client:

Socket socket = new Socket(InetAddress.getByName("IP сервера"), 7777);  //создаем сокет
DataInputStream in = new DataInputStream(socket.getInputStream(); //Получаем поток ввода
DataOutputStream out = new DataOutputStream(socket.getOutputStream()); //Получаем поток вывода
String line = null;
while(true) {
... тут все аналогично серверу только с правками для клиента
}

If you want abstraction, then wrap the above pseudo-code in your class.
Spring does not serve these purposes at all, in this task it is like hammering nails with a microscope.
For your task, sockets are exactly what you need because everything is extremely simple and there can be no problems with sockets either.