java/pokusy/_nodist/socket.java

   1 import java.io.*;
   2 import java.net.*;
   3
   4 class PongNetwork {
   5         boolean startServer(int port) {
   6                 try {
   7                         ServerSocket ss = new ServerSocket(port);
   8                         //while (true) {
   9                                 final Socket sock = ss.accept();
  10                                 InputStream is = sock.getInputStream();
  11                                 OutputStream os = sock.getOutputStream();
  12
  13                                 BufferedReader br = new BufferedReader(new InputStreamReader(is));
  14
  15                                 String s = "";
  16                                 while (s != null) {
  17                                         s = br.readLine();
  18                                         if (s != null)
  19                                         System.out.println(s);
  20                                 }
  21
  22                                 sock.close();
  23                         //}
  24                 } catch(Exception e) {
  25                         e.printStackTrace();
  26                         return false;
  27                 }
  28                 return true;
  29         }
  30
  31         boolean startClient(int port) {
  32                 try {
  33                         System.out.println("Connecting...");
  34                         Socket sc = new Socket();
  35                         sc.connect(new InetSocketAddress("localhost", port), 2000);
  36
  37                         System.out.println("Connected!");
  38
  39                         BufferedReader br = new BufferedReader(new InputStreamReader(sc.getInputStream()));
  40                         BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(sc.getOutputStream()));
  41
  42                         bw.write("GET /\n\n");  // zapíšeme předem připravený požadavek
  43                         bw.flush();         // odeslání z bufferu
  44
  45                         String line = "";
  46
  47                         // dokud jsou data, opakuj
  48                         while (line != null) {
  49                                 line = br.readLine();
  50                                 if (line != null) System.out.println(line);  // platná data vypisuj
  51                         }
  52
  53                         sc.close(); // zavření socketu
  54
  55                 } catch (Exception e) {
  56                         //e.printStackTrace();
  57                         System.out.println("Could not connect!");
  58                         return false;
  59                 }
  60                 return true;
  61         }
  62 }
  63
  64 class socket {
  65         public static void main(String[] args) {
  66                 PongNetwork pn = new PongNetwork();
  67                 if(!pn.startClient(1033)) pn.startServer(1033);
  68         }
  69 }