JAVA ServerSocket 一个tip点

ServerSocket关了之后不会对已建立的Socket有任何影响

static void testSocket() throws Exception {
      InetAddress ia = InetAddress.getByName("127.0.0.1");
      ServerSocket ss = new ServerSocket();
      ss.bind(new InetSocketAddress(ia, 0));

      Socket s1 = new Socket();
      s1.connect(new InetSocketAddress(ia, ss.getLocalPort()));
      OutputStream os = s1.getOutputStream();
      os.write(10);

      Socket s2 = ss.accept();
      ss.close();
      InputStream is = s2.getInputStream();
      System.out.println(is.read());
      
      os.write(20);
      System.out.println(is.read());
}