Listening for events

For an object to listen for events published by the IpClient class the following steps are required:

1. Set object to implement IpClientListener

2. Overload event handling methods.

3. Subscribe object to receive events published by IpClient instance.

Example

The example below demonstrates using the IpClientListener class.

import com.jscape.inet.ipclient.*;

import java.io.*;

public class MyIpClientListener implements IpClientListener {

       public void connected(IpClientConnectedEvent event) {

               System.out.println("Connected to host: " + event.getHostname());

       }

       public void disconnected(IpClientDisconnectedEvent event) {

               System.out.println("Disconnected from host: " + event.getHostname());

       }

       public static void main(String[] args) {

               try {

                       // create new IpClient instance

                       IpClient client = new IpClient("www.yahoo.com",80);

                       // subscribe listener

                       client.addIpClientListener(new MyIpClientListener());

                       // establish connection

                       client.connect();

                       // get output stream

                       OutputStream out = client.getOutputStream();

                       // send data

                       String command = "GET / HTTP/1.0\r\n\r\n";

                       out.write(command.getBytes());

                       out.flush();

                       // get input stream

                       InputStream in = client.getInputStream();

                       // read data from server

                       int i = 0;

                       while((i = in.read()) != -1) {

                               System.out.print((char)i);

                       }                

                       // disconnect

                       client.disconnect();

               } catch(Exception e) {

                       e.printStackTrace();

               }

       }

}