import java.net.*;
import java.io.*;

public class TimeIsReachableTest {

    public static void main(String args[]) {

        if(args.length != 3) {
            System.out.println("Usage: java ReachableHostTest <hosts_1> <hosts_2> <timeout>");
            System.exit(1);
        }

        InetAddress hostnames[] = new InetAddress[2];
        String tempStr = null;

        for(int i=0; i<2; i++) {
            try {
                tempStr = args[i];
                hostnames[i] = InetAddress.getByName(tempStr);
            } catch (UnknownHostException e) {
                System.err.println("UnknownHostException thrown. Test failed.");
                System.err.println("The unknown host is : " + tempStr);
                e.printStackTrace();
                System.exit(1);
            }
        }
        int timeout = Integer.parseInt(args[2]);

        try {
            long startTime = 0;
            long endTime = 0;
            System.out.println("Timeout for isReachable() is set to " + timeout);
            startTime = System.currentTimeMillis();
            boolean isReach_1 = hostnames[0].isReachable(timeout);
            endTime = System.currentTimeMillis();
            System.out.println("isReach_1: " + isReach_1 +", time= " + Long.toString(endTime-startTime) + " ms");

            startTime = System.currentTimeMillis();
            boolean isReach_2 = hostnames[1].isReachable(timeout);
            endTime = System.currentTimeMillis();
            System.out.println("isReach_2: " + isReach_2 +", time= " + Long.toString(endTime - startTime) + " ms");
        } catch (IOException e) {
            System.err.println("IOException occured.");
            e.printStackTrace();
            System.exit(1);
        }
    }
}