Java Socket Programming Experiment Summary

Client:

1. Using the Socket class

if (socket = = NULL)
    Socket = new Socket (address, 2333);
Do not use ports prior to 1024

2.socket communicates through OutputStream and InputStream operations

  if NULL )        new  PrintWriter (Socket.getoutputstream ());  Writer.println (tosend);  Writer.flush ();//Be sure to remember flush refresh
　

New BufferedReader (new     InputStreamReader (Socket.getinputstream ()));                      while (! socket.isclosed ()) {                        sleep (+);                         = reader.readline ();                         if (line!=null) {                            + "\ n");}                    }                    Reader.close ();    

3. Modify JFrame default Close window event

 Addwindowlistener (new   Windowadapter () {  public  void   windowclosing (WindowEvent e) { super  .windowclosing (e);  try   { if  (Socket! = null  ) {so                    Cket.close ();                    }}  catch   (Exception ex) {                Ex.printstacktrace ();            } system.exit ( 0); }        });

Server:

1. Using ServerSocket

  New ServerSocket (2333);

2. Broadcast implementation

Socketlist =NewArraylist<socket>(); Try{ServerSocket=NewServerSocket (2333);  while(true) {Socket Socket=serversocket.accept (); if(!socketlist.contains (socket))                    {Socketlist.add (socket); Newsocketthread (socket); }            }        } Catch(Exception e) {e.printstacktrace (); }

3. Using multithreading

BufferedReader reader =NewBufferedReader (NewInputStreamReader (Socket.getinputstream ()));  while(socket.isclosed () = =false) {Sleep (100); String Line=Reader.readline (); if(Line! =NULL) {                         for(inti = 0; I < socketlist.size (); i++) {Socket iter=(Socket) socketlist.get (i); PrintWriter writer=NewPrintWriter (Iter.getoutputstream ());                            System.out.println (line);                            Writer.println (line);                        Writer.flush (); }}} socketlist.remove (socket);

When I first run the client on my roommate's computer, I can't get access to my server, and I run the firewall after it has been hit by a jar package and then successfully completed the communication!

Java Socket Programming Experiment Summary