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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HARMONY-61) java.net.InetAddress.getByAddress(null) throws NPE insread of UnknownHostException
Date Mon, 06 Feb 2006 19:24:02 GMT
     [ http://issues.apache.org/jira/browse/HARMONY-61?page=all ]
     
Tim Ellison resolved HARMONY-61:
--------------------------------

    Resolution: Fixed

Svetlana,

Fixed in LUNI java.net.InetAddress at repo revision 375338.

Please check that this fully resolves your problem.


> java.net.InetAddress.getByAddress(null) throws NPE insread of UnknownHostException
> ----------------------------------------------------------------------------------
>
>          Key: HARMONY-61
>          URL: http://issues.apache.org/jira/browse/HARMONY-61
>      Project: Harmony
>         Type: Bug
>   Components: Classlib
>     Reporter: Svetlana Samoilenko
>     Assignee: Tim Ellison

>
> According to j2se 1.4.2 specification for java.net.InetAddress.getByAddress(byte[] addr)
the method must throw UnknownHostException if IP address is of illegal length. IPv4 address
byte array must be 4 bytes long and IPv6 byte array must be 16 bytes long. There is no mention
about NPE at all. Mentions about NPE in case of null argument were not found in java.net package
specification.
> The test listed below shows that getByAddress (null) throws NPE. BEA throws UnknownHostException.
> Code to reproduce: 
> import java.net.*; 
> public class test2 {
>     public static void main (String[] args) {
>  
>         try {
>           InetAddress.getByAddress (null); 
>         } catch (UnknownHostException e) {
>             System.out.println("***OK. Expected UnknownHostException. " + 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) 
> ***OK. UnknownHostException=:java.net.UnknownHostException: addr is of illegal length
>  C:\tmp>C:\harmony\trunk\deploy\jre\bin\java -showversion test2 
> (c) Copyright 1991, 2005 The Apache Software Foundation or its licensors, as applicable.

> java.lang.NullPointerException
>         at java.net.InetAddress.getByAddress(InetAddress.java:735) 
>         at java.net.InetAddress.getByAddress(InetAddress.java:713) 
>         at test2.main(test2.java:7)
> 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_getByAddress() { 
>         try {
>             InetAddress.getByAddress (null); 
>             fail("Assert 0: UnknownHostException must be thrown"); 
>        } catch (UnknownHostException e) {
>        }
>     } 
> }

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