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/* A class to test my java.net.InetAddress implementation */

import java.net.*;

public class TestNameLookups extends Object

{

public static void

main(String[] argv) throws UnknownHostException

{

  InetAddress addr;

  System.out.println("Started address lookup test");

  /* Test local host */

  try

    {

      addr = InetAddress.getLocalHost();

      System.out.println("The local hostname is " + addr.getHostName() +

                     " with an IP address of " + addr.getHostAddress());

    }

  catch(UnknownHostException e)

    {

      System.out.println("WARNING: Can't resolve local hostname");

    }

  /* Test simple lookup by IP */

  addr = InetAddress.getByName("18.159.0.42");

  System.out.println("Looked up IP addres 18.159.0.42 and got back a " +

                     "hostname of " + addr.getHostName());

  /* Test failed reverse lookup of IP */

  addr = InetAddress.getByName("194.72.246.154");

  System.out.println("Looked up IP addres 194.72.246.154 and got back a " +

                     "hostname of " + addr.getHostName());

  /* Test mangled/invalid IP's */

  try { addr = InetAddress.getByName("122.24.1."); }

  catch (UnknownHostException e) {

    System.out.println("Passed bad IP test 1");

  }

  try { addr = InetAddress.getByName("122.24.52"); }

  catch (UnknownHostException e) {

    System.out.println("Passed bad IP test 2");

  }

  try { addr = InetAddress.getByName("122.256.52.1"); }

  catch (UnknownHostException e) {

    System.out.println("Passed bad IP test 3");

  }

  /* Test simple lookup by name with external info */

  addr = InetAddress.getByName("www.starnews.com");

  System.out.println("Looked up host www.starnews.com and got back an " +

                     "IP address of " + addr.getHostAddress());

  byte[] octets = addr.getAddress();

  System.out.println("Raw Address Bytes: octet1=" + (int)octets[0] +

    " octets2=" + (int)octets[1] + " octet3=" + (int)octets[2] +

    " octets4=" + (int)octets[3]);

  System.out.println("toString() returned: " + addr.toString());

  System.out.println("isMulticastAddress returned: "

                     + addr.isMulticastAddress());

  /* Test complex lookup */

  System.out.println("Looking up all addresses for indiana.edu ...");

  InetAddress[] list = InetAddress.getAllByName("indiana.edu");

  for (int i = 0; i < list.length; i++)

    {

      addr = list[i];

      System.out.println("   Hostname: " + addr.getHostName() +

                         " IP Address: " + addr.getHostAddress());

    }

  /* Test equality */

  InetAddress addr1 = InetAddress.getByName("www.urbanophile.com");

  InetAddress addr2 = InetAddress.getByName("www.urbanophile.com");

  if (addr1.equals(addr2) && addr2.equals(addr1))

    System.out.println("Passed equality test #1");

  else

    System.out.println("Failed equality test #1");

  addr1 = InetAddress.getByName("www.ac.com");

  addr2 = InetAddress.getByName("www.hungry.com");

  if (!addr1.equals(addr2) && !addr2.equals(addr1))

    System.out.println("Passed equality test #2");

  else

    System.out.println("Failed equality test #2");

  /* Quick test to see if it looks like we're caching things */

  addr1 = InetAddress.getByName("www.urbanophile.com");

  System.out.println("Got " + addr1.getHostName() + " " + addr1.getHostAddress());

  addr2 = InetAddress.getByName("www.hungry.com");

  System.out.println("Got " + addr2.getHostName() + " " + addr2.getHostAddress());

}

}