简单JAVA socket 笔记

Server：
                ServerSocket server = new ServerSocket(PORT, 1);  // 打开Server并监听
                Socket client = server.accept();  // block 直到有client，得到对应socket 句柄
                System.out.println("Client connected");
                while (true) {
                    BufferedReader reader = new BufferedReader(new InputStreamReader(client.getInputStream()));  // 得到输入流
                    System.out.println("Read from client");
                    String textLine = reader.readLine() + "\n";
                    if (textLine.equalsIgnoreCase("EXIT\n")) {
                        System.out.println("EXIT invoked, closing client");
                        break;
                    }
                   
                    if (textLine.equal