Want to win a PS4? Go Premium and enter to win our High-Tech Treats giveaway. Enter to Win

x
?
Solved

RMI Problem - Urgent

Posted on 2002-04-02
7
Medium Priority
?
304 Views
Last Modified: 2008-03-06
hi experts,

I'm writing an RMI application. The ServerRMI has been started successfully. When running the ClientRMI I get the following exception:

java.rmi.RemoteException: java.net.ConnectException: Connection refused; nested exception is:
        java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:301)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:121)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:108)
        at java.net.Socket.<init>(Socket.java:265)
        at java.net.Socket.<init>(Socket.java:94)
        at com.objectspace.voyager.LightProxy.newSocket(LightProxy.java:634)
        at com.objectspace.voyager.LightProxy.getCnxOS(LightProxy.java:588)
        at com.objectspace.voyager.LightProxy.osinv(LightProxy.java:453)
        at com.objectspace.voyager.LightProxy.osinvHC(LightProxy.java:406)
        at com.objectspace.voyager.LightProxy.inv(LightProxy.java:389)
        at com.objectspace.voyager.LightProxy.vI(LightProxy.java:294)
        at com.i2.iba.session.SessionServer_IProxy__Proxy__LightProxy.test(Unknown Source)
        at com.i2.iba.session.I2Session.main(I2Session.java:25)

I have already created and open a port(8888) for it and create the stubs and the skeletons using rmic tool. Do I need to set any security policy? I have already added two policy into java.policy.

permission java.net.SocketPermission "*:1024-65535", "connect,accept";
permission java.net.SocketPermission "*:8888", "connect";

It still doesn't work. Please give me help. Thanks!!
0
Comment
Question by:wilsontang
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
7 Comments
 
LVL 9

Expert Comment

by:Venci75
ID: 6912828
It looks that your client tries to connect to a wrong port or this host (port) is not accessible from the client machine. May the problem is that you can't connect to the RMI registry. To check this, try to establish a connection with the telnet application from the client host:
telnet <registry host> <registry port>
0
 

Author Comment

by:wilsontang
ID: 6914836
hi Venci75,
     I tried to run "nmap" command and the output as follows:
Port       State       Service
21/tcp     open        ftp
25/tcp     open        smtp
135/tcp    open        loc-srv
139/tcp    open        netbios-ssn
465/tcp    open        smtps
1433/tcp   open        ms-sql-s
5800/tcp   open        vnc
5900/tcp   open        vnc
8888/tcp   open        sun-answerbook

So port 8888 is already open. I think the telnet service doesn't care. It uses tcp to make a connection via port 8888, right? How about rmi registry? Do i need to set it using a command "rmiregistry"? How can I check this table?
Thanks a lot!!
 
0
 

Author Comment

by:wilsontang
ID: 6914854
hi Venci75,
     I tried to run "nmap" command and the output as follows:
Port       State       Service
21/tcp     open        ftp
25/tcp     open        smtp
135/tcp    open        loc-srv
139/tcp    open        netbios-ssn
465/tcp    open        smtps
1433/tcp   open        ms-sql-s
5800/tcp   open        vnc
5900/tcp   open        vnc
8888/tcp   open        sun-answerbook

So port 8888 is already open. I think the telnet service doesn't care. It uses tcp to make a connection via port 8888, right? How about rmi registry? Do i need to set it using a command "rmiregistry"? How can I check this table?
Thanks a lot!!
 
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 9

Expert Comment

by:Venci75
ID: 6915155
In addition to the client and the server you have to start the rmi registry (rmiregistry from the java bin directory).
0
 
LVL 1

Expert Comment

by:Moondancer
ID: 6961434
ADMINISTRATION WILL BE CONTACTING YOU SHORTLY.  Moderators Computer101 or Netminder will return to finalize these if they are still open in 14 days.  Please post closing recommendations before that time.

Below are your open questions as of today.  Questions which have been inactive for 21 days or longer are considered to be abandoned and for those, your options are:
1. Accept a Comment As Answer (use the button next to the Expert's name).
2. Close the question if the information was not useful to you, but may help others. You must tell the participants why you wish to do this, and allow for Expert response.  This choice will include a refund to you, and will move this question to our PAQ (Previously Asked Question) database.  If you found information outside this question thread, please add it.
3. Ask Community Support to help split points between participating experts, or just comment here with details and we'll respond with the process.
4. Delete the question (if it has no potential value for others).
   --> Post comments for expert of your intention to delete and why
   --> YOU CANNOT DELETE A QUESTION with comments; special handling by a Moderator is required.

For special handling needs, please post a zero point question in the link below and include the URL (question QID/link) that it regards with details.
http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt
 
Please click this link for Help Desk, Guidelines/Member Agreement and the Question/Answer process.  http://www.experts-exchange.com/jsp/cmtyHelpDesk.jsp

Click you Member Profile to view your question history and please keep them updated. If you are a KnowledgePro user, use the Power Search option to find them.  

Questions which are LOCKED with a Proposed Answer but do not help you, should be rejected with comments added.  When you grade the question less than an A, please comment as to why.  This helps all involved, as well as others who may access this item in the future.  PLEASE DO NOT AWARD POINTS TO ME.

To view your open questions, please click the following link(s) and keep them all current with updates.
http://www.experts-exchange.com/questions/Q.11835018.html
http://www.experts-exchange.com/questions/Q.20006582.html
http://www.experts-exchange.com/questions/Q.20108618.html
http://www.experts-exchange.com/questions/Q.20130444.html
http://www.experts-exchange.com/questions/Q.20248693.html
http://www.experts-exchange.com/questions/Q.20268938.html
http://www.experts-exchange.com/questions/Q.20269858.html
http://www.experts-exchange.com/questions/Q.20284003.html


To view your locked questions, please click the following link(s) and evaluate the proposed answer.
http://www.experts-exchange.com/questions/Q.20131149.html

*****  E X P E R T S    P L E A S E  ******  Leave your closing recommendations if this item remains inactive another seven (7) days.  If you are interested in the cleanup effort, please click this link http://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=commspt&qid=20274643 
POINTS FOR EXPERTS awaiting comments are listed here -> http://www.experts-exchange.com/commspt/Q.20277028.html
 
Moderators will finalize this question if in @14 days Asker has not responded.  This will be moved to the PAQ (Previously Asked Questions) at zero points, deleted or awarded.
 
Thank you everyone.
 
Moondancer
Moderator @ Experts Exchange
0
 
LVL 9

Expert Comment

by:Venci75
ID: 7932516
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
PAQ'd and pts refunded
Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Venci75
EE Cleanup Volunteer
0
 

Accepted Solution

by:
SpideyMod earned 0 total points
ID: 7984153
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
0

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
Introduction This article is the first of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article explains our test automation goals. Then rationale is given for the tools we use to a…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

604 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question