java 網絡編程的一些函數

 

TCP

 

Server

 

1  ServerSocket server = new ServerSocket( portnum , queueLength);

2  Socket connect = server.accept();

3 ObjectInputStream input = new ObjectInputStream( connect.getInputStream );

   ObjectOutputStream output = new ObjectOutputStream( connect.getOutputStream);

 

output.flush();

String msg = (String) input.readObject();

output.writeObject( String );

 

input.close();

output.close();

connect.close();

 

Client

1 Socket connect = new Socket( InetAddress.getByName( String serverAddress)  ,  port );

2 ObjectInputStream input = new ObjectInputStream( connect.getInputStream );

   ObjectOutputStream output = new ObjectOutputStream( connect.getOutputStream);

 

 

UDP

 

DatagramSocket socket = new DatagramSocket( int port );

 

byte data[] = new byte[100];

DatagramPacket receivePacket = new DatagramPacket(   data , data.length );

socket.receive( receivePacket );

 

 

DatagramPacket sendPacket = new DatagramPacket( receivePacket.getData() ,

                    receivePacket.getLength() , receivePacket.getAddress() , receivePacket.getPort() );

socket.send( sendPacket );