Re: RMI & connection refused

Tom Anderson <>
Sun, 2 Aug 2009 13:39:01 +0100
On Sat, 1 Aug 2009, Duane Evenson wrote:

Here's my commands:

rmiregistry &
java RMIServer localhost 1099 &
java RMIClient localhost 1099

The problem is with the next command from a remote host:

java RMIClient adam 1099
java.rmi.ConnectException: Connection refused to host:; nested exception is: Connection refused

Why is it connecting to That's the local loopback interface -
you know about that, right? If the client and server are on different
machines, that doesn't seem like a totally likely to work thing to do.
What's your /etc/hosts look like? What to you get if you do 'ping adam'?

A simple but good diagnostic tool in situations like this is telnet. On
the client machine, telnet to port 1099 on the server machine. If you
manage to make a connection, you know that there's nothing wrong at the
network level, and any problem must be in the program. If you can't make a
connection, you know there's trouble with the network - firewalls, DNS,
routing, something like that.


Argumentative and pedantic, oh, yes. Although it's properly called
"correct" -- Huge

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