java.rmi.ConnectionExceptionException:Connect refused to host

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java.rmi.ConnectionExceptionException:Connect refused to host

java.rmi.ConnectionExceptionException:Connect refused to host

2004-11-17 - By Laxmikanth, Mukund

Back

Reply: 1 2 3 4 5 6

If you are able to ping then check the whether the port number is open

-- --Original Message-- --
From: Kurien Joseph [mailto:kurien_joseph@(protected)]
Sent: Wednesday, November 17, 2004 12:56 PM
To: J2EE-INTEREST@(protected)
Subject: Re: java.rmi.ConnectionExceptionException:Connect refused to host

* First check if you can ping both machines from each other.

* If you still can ping make sure the localhost setting in your host file
to map to the IP address instead of the 127.0.0.1 loopback.

-Kurien

__ __

From: A mailing list for Java(tm) 2 Platform, Enterprise Edition [mailto:J2EE
-INTEREST@(protected)] On Behalf Of Edward King
Sent: Wednesday, November 17, 2004 12:41 AM
To: J2EE-INTEREST@(protected)
Subject: java.rmi.ConnectionExceptionException:Connect refused to host

I write a rmi,when server and client runs in the same machine,it runs ok,then I
run them in two machines,server runs in 192.168.0.1,like follows:
C:\>rmiregistry -J-Djava.security.policy=registerit.policy
C:\>java -Djava.rmi.dgc.leaseValue=1000 -Djava.security.policy=registery.policy
RegisterIt
Object instantiated: HelloServer[RemoteStub [ref: [endpoint:[192.168.0.1:3120](l
ocal),objID:[0]]]]

and it ok ,client runs in 192.168.0.2, but it raise errors:
java -Djava.security.policy=registerit.policy HelloClient
HelloClient exception :java.rmi.ConnectionException:Connection refused to host
:192.168.0.2;nested exception is:java.net.ConnectException

Source code of java.net.ConnectException

:Connection refused
:connect

Why? how to solve it? I have puzzled with it for many days! Please help.
Any idea will be appreciated!

My code is follows:
--HelloInterface.java--
public interface HelloInterface extends java.rmi.Remote{
public String sayHello() throws java.rmi.RemoteException

;
}

--HelloServer.java--
import java.io.*;
import java.rmi.*;
import java.rmi.server.*;
import java.util.*;
public class HelloServer extends UnicastRemoteObject implements HelloInterface{
public HelloServer() throws RemoteException{
super();
}

public String sayHello() throws RemoteException{
return "Hello world, the current system time is "+new Date();
}
}

--RegisterIt.java--
import java.rmi.*;
public class RegisterIt{
public static void main(String args[]){
try{
HelloServer obj=new HelloServer();
System.out.println("Object instantiated: "+obj);
Naming.rebind("/HelloServer",obj);
System.out.println("HelloServer bound in registery");
}
catch(Exception e){
System.out.println(e);
}
}
}

--registerit.policy--
grant{
permission java.security.AllPermission

Source code of java.security.AllPermission

;
};

--HelloClient.java--
import java.rmi.*;
public class HelloClient{
public static void main(String args[]){
if(System.getSecurityManager()==null){
System.out.println("null");
System.setSecurityManager(new RMISecurityManager());
}
try{
HelloInterface obj=(HelloInterface)Naming.lookup("/HelloServer");
String message=obj.sayHello();
System.out.println(message);
}
catch(Exception e){
System.out.println("HelloClient exception: "+e);
}
}
}

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<BODY lang=EN-US vLink=purple link=blue bgColor=white>
<DIV>If
you
are able to ping then check the whether the port number is
open</DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left>-- --Original Message-- -- From: Kurien Joseph
[mailto:kurien_joseph@(protected)] Sent: Wednesday, November 17,
2004 12:56 PM To: J2EE-INTEREST@(protected) Subject: Re:
java.rmi.ConnectionExceptionException:Connect refused to
host </DIV>
<DIV class=Section1>
<UL style="MARGIN-TOP: 0in" type=disc>
<LI class=MsoNormal style="COLOR: navy; mso-list: l0 level1 lfo1">First check if you can ping
both
machines from each other.<o:p></o:p>
<LI class=MsoNormal style="COLOR: navy; mso-list: l0 level1 lfo1">If you still can ping make sure
the localhost setting in your host file to map to the IP address instead of
the 127.0.0.1 loopback.<o:p></o:p> </LI></UL>
<o:p> </o:p>
-Kurien<o:p></o:p>
<o:p> </o:p>
<o:p> </o:p>
<DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center>
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</DIV>
From: A
mailing list for Java(tm) 2 Platform, Enterprise Edition
[mailto:J2EE-INTEREST@(protected)] On
Behalf Of Edward King Sent: Wednesday, November 17, 2004 12:41
AM To:
J2EE-INTEREST@(protected) Subject:
java.rmi.ConnectionExceptionException:Connect refused to
host<o:p></o:p></DIV>
<o:p> </o:p>
<DIV>
I
write a rmi,when server and client runs in the same machine,it runs ok,then I
run them in two machines,server runs in 192.168.0.1,like
follows: C:\>rmiregistry
-J-Djava.security.policy=registerit.policy C:\>java
-Djava.rmi.dgc.leaseValue=1000 -Djava.security.policy=registery.policy
RegisterIt Object instantiated: HelloServer[RemoteStub [ref:
[endpoint:[192.168.0.1:3120](l ocal),objID:[0]]]]<o:p></o:p>
</DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
and
it ok ,client runs in 192.168.0.2, but it raise errors: java
-Djava.security.policy=registerit.policy HelloClient HelloClient exception
:java.rmi.ConnectionException:Connection refused to host:192.168.0.2;nested
exception is:java.net.ConnectException

:Connection
refused:connect<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
Why
?
how to solve it? I have puzzled with it for many days! Please help. Any
idea will be appreciated!<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
My
code is follows: --HelloInterface.java-- public interface
HelloInterface
extends java.rmi.Remote{ public String sayHello() throws
java.rmi.RemoteException

; }<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
--HelloServer.java-- import java.io.*; import
java.rmi.*; import java.rmi.server.*; import java.util.*; public
class HelloServer extends UnicastRemoteObject implements
HelloInterface{ public HelloServer() throws
RemoteException{ super(); }<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
public String sayHello() throws
RemoteException{ return "Hello world, the current system time is "+new
Date(); } }<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
--RegisterIt.java-- import java.rmi.*; public
class RegisterIt{ public static void main(String
args[]){ try{ HelloServer obj=new
HelloServer(); System.out.println("Object instantiated:
"+obj); Naming.rebind("/HelloServer",obj); System.out.println(
"HelloServer
bound in registery"); } catch(Exception
e){ System.out.println(e); }
 } }<o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
--registerit.policy-- grant{ permission
java.security.AllPermission

; }; <o:p></o:p></DIV>
<DIV>
 
<o:p></o:p></DIV>
<DIV>
--HelloClient.java-- import java.rmi.*; public
class HelloClient{ public static void main(String
args[]){ if(System.getSecurityManager()==null){ System.out.println(
"null"); System.setSecurityManager(new
RMISecurityManager()); } try{ HelloInterface
obj=(HelloInterface)Naming.lookup("/HelloServer"); String
message=obj.sayHello(); System.out.println(message); } catch
(Exception
e){ System.out.println("HelloClient exception:
"+e); } } }<o:p></o:p></DIV></DIV>================
===========================================================
To unsubscribe, send email to listserv@(protected) and include in the body
of
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=
To unsubscribe, send email to listserv@(protected) and include in the body
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</BLOCKQUOTE><pre>Notice: All email and instant messages (including
attachments) sent to or from Franklin Templeton Investments (FTI) personnel may
be retained, monitored and/or reviewed by FTI and its agents, or authorized law
enforcement personnel, without further notice or consent.
</pre></BODY></HTML>
===========================================================================
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