[6285] in java-interest
problem with sockets
daemon@ATHENA.MIT.EDU (Vincent Warscotte)
Thu Mar 28 15:16:53 1996
Date: Mon, 25 Mar 1996 13:24:08 +0100
Reply-To: Java Interest <JAVA-INTEREST@JAVASOFT.COM>
From: Vincent Warscotte <Warscotte@TELE.UCL.AC.BE>
To: Multiple recipients of list JAVA-INTEREST
<JAVA-INTEREST@JAVASOFT.COM>
Hi,
I'm working on the implementation of a client-server application
with JAVA. The server machine has an IP address that is 130.104.97.11.
When I try to connect from another machine of the same network as
the server machine, no problem occurs but when I try to connect from
a machine of another network, I receive the following message :
java.net.UnknownHostException: 130.104.97.11
at java.net.InetAddress.getAllByName(InetAddress.java:263)
at java.net.InetAddress.getByName(InetAddress.java:197)
at java.net.Socket.<init>(Socket.java:81)
at java.net.Socket.<init>(Socket.java:62)
at sun.net.NetworkClient.openServer(NetworkClient.java:47)
at sun.net.NetworkClient.<init>(NetworkClient.java:71)
at neweoleclient.connect(eole.java:2134)
at neweoleclient.runClient(eole.java:2211)
at fiche.<init>(eole.java:1130)
at eole.effectuerrecherche(eole.java:1018)
at eole.handleEvent(eole.java:735)
at java.awt.Component.postEvent(Component.java:838)
at java.awt.Component.postEvent(Component.java:845)
at java.awt.Component.postEvent(Component.java:845)
at sun.awt.motif.MButtonPeer.action(MButtonPeer.java:39)
at java.lang.Thread.run(Thread.java)
What is very astonisching is that when I use the Unix ping command from
the remote machine ('ping 130.104.97.11'),
I received the normal message : '130.104.97.11 is valid'.
Is it a problem of security ? Of a JAVA bug ? Of am I completely wrong ?
Could anyone help me ?
Thanks in advance,
Vincent
Warscotte Vincent - Research Assistant
Laboratoire de Telecommunications et Teledetection
Universite Catholique de Louvain - Belgium
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