John,
I'll bet that the first line in your /etc/hosts is:
127.0.0.1 localhost localhost.localdomain
At least, that's the way it was with mine and, when I tried your program, I
got the same "broken" answer you got. After reading Per's message, I moved
that line below the second line in my /etc/hosts so that it looks like this:
198.41.2.245 knight.internic.net knight
127.0.0.1 localhost localhost.localdomain
Guess what? It now works correctly. I have a feeling that it shouldn't be
dependent on your /etc/hosts entry order, but at least this will account for
the difference between your and Per's results.
BTW, I'm testing this on a RH 5.1 system with sn's jdk-1.1.6v1.2.
pete
] John A. Zinky wrote:
] > We have not been able to find a configuration of Linux Red Hat 5.0 and
] > jdk 1.1.x that works for the following one line test program.
] >
] > public class TestGetLocalHost {
] > public static void main(String[] args) {
] > try {
] > System.out.println(java.net.InetAddress.getLocalHost());
] > } catch (Exception e) { e.printStackTrace(); }
] > }}
] >
] > The Test program prints the IP address of local host
] > (A necessary function for servers that need to publish their location)
] >
] > On Solaris,NT, and Red Hat 4.0/jdk1.1.3 this works: e.g:
] > guava.bbn.com/171.78.82.34
] > On Linux Red Hat 5.0 jdk1.1.5 this returns the loopback address: e.g:
] > localhost/127.0.0.1
] >
] > We have traced the problem in to the C routines for native platform
] > on Line 298 in .../jdk1.1.5/src/java/net/InetAddress.java
] > localHost.hostName = impl.getLocalHostName();
] > System.out.println("local host name: " + localHost.hostName);
] >
] > On linux: local host name: localhost
] > On Solaris: local host name: guava.bbn.com
] >
] > **** Questions *****
] > 1) Does anyone have a Linux RedHat 5.0 configuration where this program works?
]
] It works fine for me: RedHat 5.0 and jdk1.1.6-v1 (sbb). Make sure you
] have the
] latest version of libc installed (can be found at www.redhat.com).
]
] > [ .... ]
] > 2) Could this be a configuration error in the linux host?
]
] I believe that is the case. Try with DNS configured.
]
] > [ .... ]
]
] /Per Widerlund
]
