libjava/classpath/test/java.net/TestNameLookups.java

   1 /* A class to test my java.net.InetAddress implementation */
   2
   3 import java.net.*;
   4
   5 public class TestNameLookups extends Object
   6 {
   7 public static void
   8 main(String[] argv) throws UnknownHostException
   9 {
  10   InetAddress addr;
  11
  12   System.out.println("Started address lookup test");
  13
  14   /* Test local host */
  15   try
  16     {
  17       addr = InetAddress.getLocalHost();
  18
  19       System.out.println("The local hostname is " + addr.getHostName() +
  20                      " with an IP address of " + addr.getHostAddress());
  21     }
  22   catch(UnknownHostException e)
  23     {
  24       System.out.println("WARNING: Can't resolve local hostname");
  25     }
  26
  27   /* Test simple lookup by IP */
  28   addr = InetAddress.getByName("18.159.0.42");
  29
  30   System.out.println("Looked up IP addres 18.159.0.42 and got back a " +
  31                      "hostname of " + addr.getHostName());
  32
  33   /* Test failed reverse lookup of IP */
  34   addr = InetAddress.getByName("194.72.246.154");
  35
  36   System.out.println("Looked up IP addres 194.72.246.154 and got back a " +
  37                      "hostname of " + addr.getHostName());
  38
  39   /* Test mangled/invalid IP's */
  40   try { addr = InetAddress.getByName("122.24.1."); }
  41   catch (UnknownHostException e) {
  42     System.out.println("Passed bad IP test 1");
  43   }
  44
  45   try { addr = InetAddress.getByName("122.24.52"); }
  46   catch (UnknownHostException e) {
  47     System.out.println("Passed bad IP test 2");
  48   }
  49
  50   try { addr = InetAddress.getByName("122.256.52.1"); }
  51   catch (UnknownHostException e) {
  52     System.out.println("Passed bad IP test 3");
  53   }
  54
  55   /* Test simple lookup by name with external info */
  56   addr = InetAddress.getByName("www.starnews.com");
  57   System.out.println("Looked up host www.starnews.com and got back an " +
  58                      "IP address of " + addr.getHostAddress());
  59   byte[] octets = addr.getAddress();
  60   System.out.println("Raw Address Bytes: octet1=" + (int)octets[0] +
  61     " octets2=" + (int)octets[1] + " octet3=" + (int)octets[2] +
  62     " octets4=" + (int)octets[3]);
  63   System.out.println("toString() returned: " + addr.toString());
  64   System.out.println("isMulticastAddress returned: "
  65                      + addr.isMulticastAddress());
  66
  67   /* Test complex lookup */
  68   System.out.println("Looking up all addresses for indiana.edu ...");
  69   InetAddress[] list = InetAddress.getAllByName("indiana.edu");
  70   for (int i = 0; i < list.length; i++)
  71     {
  72       addr = list[i];
  73
  74       System.out.println("   Hostname: " + addr.getHostName() +
  75                          " IP Address: " + addr.getHostAddress());
  76     }
  77
  78   /* Test equality */
  79   InetAddress addr1 = InetAddress.getByName("www.urbanophile.com");
  80   InetAddress addr2 = InetAddress.getByName("www.urbanophile.com");
  81
  82   if (addr1.equals(addr2) && addr2.equals(addr1))
  83     System.out.println("Passed equality test #1");
  84   else
  85     System.out.println("Failed equality test #1");
  86
  87   addr1 = InetAddress.getByName("www.ac.com");
  88   addr2 = InetAddress.getByName("www.hungry.com");
  89
  90   if (!addr1.equals(addr2) && !addr2.equals(addr1))
  91     System.out.println("Passed equality test #2");
  92   else
  93     System.out.println("Failed equality test #2");
  94
  95   /* Quick test to see if it looks like we're caching things */
  96   addr1 = InetAddress.getByName("www.urbanophile.com");
  97   System.out.println("Got " + addr1.getHostName() + " " + addr1.getHostAddress());
  98   addr2 = InetAddress.getByName("www.hungry.com");
  99   System.out.println("Got " + addr2.getHostName() + " " + addr2.getHostAddress());
 100 }
 101
 102 }
 103