Re: RMI thru Internet

From:
"Oliver Wong" <owong@castortech.com>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 25 Sep 2006 17:17:36 GMT
Message-ID:
<QaURg.32835$bf5.29647@edtnps90>
"polaris" <smarto59@hotmail.com> wrote in message
news:1159201633.898365.118780@e3g2000cwe.googlegroups.com...

Andrew Thompson wrote:

polaris wrote:
....

Im using RMI to connect java applet with a remote server. The
connection
is successful when the server in same machine or in the same flat
network
but its failed


How? Security exception? sand-box - sign it.


I think the application looks for IP address that inside
the same local network directly. It can't traverse the
internet getways. I got this error from the browser java console:

java.lang.RuntimeException: java.rmi.ConnectException: Connection
refused to host: 222.222.222.222; nested exception is:
java.net.ConnectException: Connection timed out: connect
at ClientApplet.init(ClientApplet.java:29)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.rmi.ConnectException: Connection refused to host:
222.222.222.222; nested exception is:
java.net.ConnectException: Connection timed out: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.createConnection(Unknown Source)
at sun.rmi.transport.tcp.TCPChannel.newConnection(Unknown Source)
at sun.rmi.server.UnicastRef.newCall(Unknown Source)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at ClientApplet.init(ClientApplet.java:24)
... 2 more
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at java.net.Socket.<init>(Unknown Source)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(Unknown
Source)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(Unknown
Source)
... 8 more

I replaced the real IP with 222.222.222.222


    This sounds like a network problem rather than a Java one. Have you
tried the basic tests, e.g. manually pinging the server?

    - Oliver

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