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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HARMONY-56) java.net.InetAddress.getAllByName(null) throws UnknownHostException instead of valid InetAddress
Date Tue, 31 Jan 2006 14:41:34 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-56?page=all ]

Tim Ellison reassigned HARMONY-56:
----------------------------------

    Assign To: Tim Ellison

> java.net.InetAddress.getAllByName(null) throws UnknownHostException instead of valid
InetAddress
> ------------------------------------------------------------------------------------------------
>
>          Key: HARMONY-56
>          URL: http://issues.apache.org/jira/browse/HARMONY-56
>      Project: Harmony
>         Type: Bug
>   Components: Classlib
>     Reporter: Svetlana Samoilenko
>     Assignee: Tim Ellison

>
> According to j2se 1.4.2 specification java.net.InetAddress.getAllByName(String host)
method allows a host is null. In this case the  InetAddress representing an address of the
loopback interface is returned.
> But as we can see from the test listed below java.net.InetAddress.getAllByName(null)
throws UnknownHostException instead of valid InetAddress.
> Code to reproduce: 
> import java.net.*;
> public class test2 {
>     public static void main (String[] args) {
>  
>         try {
>            InetAddress[] ia = InetAddress.getAllByName(null); 
>            for (int i = 0; i<ia.length; i++) {
>                System.out.println("***InetAddress.getAllByName(null)["+i+"] returned
" + ia[i]); 
>            }
>         } catch (Exception e) {
>             System.out.println("***Unexpected exception:" + e); 
>        }
>     } 
> }
> Steps to Reproduce: 
> 1. Build Harmony (check-out on 2006-01-30) j2se subset as described in README.txt. 
> 2. Compile test2.java using BEA 1.4 javac 
> > javac -d . test2.java 
> 3. Run java using compatible VM (J9) 
> > java -showversion test2 
> Output: 
> C:\tmp>C:\jrockit-j2sdk1.4.2_04\bin\java.exe -showversion test2 
> java version "1.4.2_04" 
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05) 
> BEA WebLogic JRockit(TM) 1.4.2_04 JVM (build ari-31788-20040616-1132-win-ia32, Native
Threads, GC strategy: parallel) 
> ***InetAddress.getAllByName(null)[0] returned localhost/127.0.0.1
> C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2 
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.
> ***Unexpected exception:java.net.UnknownHostException: No host name provided
> Suggested junit test case:
> ------------------------ InetAddressTest.java -------------------------------------------------

> import java.net.*; 
> import junit.framework.*; 
> public class InetAddressTest extends TestCase { 
>     public static void main(String[] args) { 
>         junit.textui.TestRunner.run(InetAddressTest.class); 
>     } 
>     public void test_getAllByName() { 
>         try {
>            InetAddress[] ia = InetAddress.getAllByName(null); 
>            assertEquals ("Assert 0: getAllByName() returns incorrect value " + ia[0].toString(),"localhost/127.0.0.1",ia[0].toString());

>         } catch (Exception e) {            
>            fail("Assert 1: Unexpected exception:" + e);
>         }
>     } 
> }

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