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Java Network Q&A » RMI » client 

1. Java RMI - client to server call    stackoverflow.com

Trying to get an understanding on how the RMI is working (I have a simple application that uses RMI and seems to work just fine). My question is : What happens when ...

2. Java RMI Client Server Replication    stackoverflow.com

I am currently using java RMI for a client server style architecture however I want to replicate the servers using JGroups and as I have never dealt with replication before I ...

3. J2SE Client Server App: Client calls RMI method. Server handles RMI method and returns, but Client never receives it. Any ideas?    stackoverflow.com

J2SE Client Server App: Client calls RMI message. Server handles RMI method and returns, but Client never receives it. Any ideas how this could happen? Our attempted ...

4. Java RMI - send Client stubs to other clients    stackoverflow.com

I've got to implement something like P2P in RMI. I've created two Remote intrfaces : server and client. Server is responsible for registering clients and returning client stubs to other clients ...

5. Java RMI - Making the client a server    stackoverflow.com

If i want to enable 'two way' communication in my RMI Application (That is, allow the server to invoke methods on the client, as well as the client to invoke methods ...

6. Java RMI NoSuchObjectException    stackoverflow.com

I have a server and client using Java RMI. If I use one client all is fine with the code below. But if I connect with a client and then a ...

7. Verifying that classes on server and client are identical    stackoverflow.com

In a Java RMI Client/Server application, is there a way to verify that the classes on the server and client are identical?

8. RMI client tracking    stackoverflow.com

I'm building a Client / Server app that has some very specific needs. There are 2 kinds of servers: the first kind provide most of the remote procedures and clients connect ...

9. Seperate Consoles for Client and Server (Java RMI)    stackoverflow.com

I am writing a client-server application using Java RMI. Now, my question is I have multiple clients and a server, to see some communication, I have System.out.println statements (SOPs) in both client ...

10. java rmi re-connecting client problem    stackoverflow.com

I am trying to develop a simple server/client program usrin java rmi. everything seems to work fine so far, but the only problem is that when a client exits and tries ...

11. Java - Detecting client crash with RMI    stackoverflow.com

I have created a RMI connection but I do not know how to notify the server when the client ends or crashes. I have found the unreferenced() method, but it does ...

12. How to export files from server to client - Java RMI    stackoverflow.com

I am new to Java RMI and I am simply trying to run a "Hello World" program (code is shown at the end of the message) Basically, I have a remote ...

13. Server - Client impletmentation using RMI over the Internet    stackoverflow.com

I implemented very basic RMI server client application. It works perfectly in LAN. It doesn't work over the Internet though. What are the things i should consider to make it work ...

14. Java rmi, differentiating between multiple client    stackoverflow.com

Edit: To be clearer, I basically need to differentiate between the different clients doing remote method invocation in objects stored in the server remote object registry. How could I do that? And ...

15. RMI Client and Server programms    stackoverflow.com

I implemented a client and server programms using RMI. I wrote this both server and client classes in same project. But now I want to run this client and server programms ...

16. Plain RMI console client    stackoverflow.com

I'm working on a client-server application implemented with RMI where the client is a simple console application with several methods that the server can remotely invoke. When the client is started, ...

17. how to limit RMI clients?    coderanch.com

Hi all. We are writing code which includes control of a micro-positioner system via Java Native Interface. Because there is only one physical positioner, we would like to limit clients to one at a time. We used to do this through sockets. The server kept track of whether or not there was currently a user. If there was a current user ...

18. RMI Client    coderanch.com

hi All, I have written an RMI app. - The server is running and the client is able to call methods from the server object. - I terminated the server application. - From the client side the error is detected and an appropriate message is displayed. - I brought the server up. - The client is still giving an error message. ...

19. RMI serving multiple clients    coderanch.com

I have few basic RMI questions. If I am developing a Shoppingcart app., using regular Client and server (rather than Servlet), How do I maintain session once the user logs in? Will RMI server and Client have a connection over the Socket for the life time of the Client once you obtain a remote server object using Naming.lookup? If multiple clients ...

20. rmi client on a different machine    coderanch.com

hi, i have made a rmi client and a server on the same machine. it works i am told that to invoke a remote object from a different machine i need to make the same client in other machine. but logically enough i am unable to compile the client code on the different machine. it does not recognize the interface that ...

21. RMI - Client Application    coderanch.com

Your application will consist of two-RMI Servers and two-RMI clients. its simple as you do in a simple RMI client-server application in this case both client & server will extend UnicastRemoteObject i.e both will implement some Remote methods hence both will act like RMI Servers for clients. and both will become clients for each other by invoking Remote Methods on each ...

22. problem in simulating rmi clients    coderanch.com

Hi All, I have implemented a simple RMI server with a simple method. Then, simulated clients using 15 threads calling getting the remore objet reference and calling a method in the server. I tested in my system without any network(localhost). It worked fine for 15 threads, when i started increasing the number of clients/threds, some the threads started throwing exceptions (only ...

24. handling 2 clients in RMI    coderanch.com

26. RMI client and server    coderanch.com

28. RMI on client machine    coderanch.com

29. Client Information using RMI    coderanch.com

30. RMI client "access denied" problem    coderanch.com

Hi,I got the server successfully bound on my own pc, and tried to run the client. and I got an "access denied" exception somewhat like the following: exception: access denied (java.net.SocketPermission 127.0.0.1:1099 connect, resolve) java.security.AccessControlException: access denied (java.net.SocketPermission 127.0.0.1:1099 connect,resolve) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkConnect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.connect(Unknown Source) at java.net.Socket.(Unknown Source) ...

31. RMI Client    coderanch.com

Hello to all.... It's really important to me to know about that thing which is related to RMI.....plz help me in this regard.... My problem is that how i can send particular file to particular client.. In my scenario, few of clients are connected or i can say registered...so in that manner i will get that client's hostname by using gethostClient() ...

32. how to get Clients CPU information on Server using Java RMI    coderanch.com

i have java RMI Client Server programme, I want to see Clients CPU Usage, Memory, HDD Space and Computer ID on Server, how can I do that,I will really appreciate if someone provide me the codes as I am not good in java, I am giving the programme in which I have to put the additional codes, I hope this will ...

33. jre & rmi client    coderanch.com

34. recognising rmi client    coderanch.com

RB is right if you were planning on storing separate objects for each unique client. Of course it could depend totally on your application. If you had given us some more info on your project, it might change the answer. If you have a limited number of clients possible/expected, you could hold independant objects for different clients and then reference them ...

35. Messaging a client on RMI    coderanch.com

hi all I am new to RMI, and I appreciate any help. I have my server and client running. I want to notify clients with any errors that occurs on the server side. Like server restarted, or shuting down. How can I send message to all clients currently connection to this server? thanks

36. RMI:between a client Windows and a Unix Server    coderanch.com

I've never seen an "Illegal Constant Pool Type" error myself, but by doing some googleing, it looks like this error only happens when a class file gets corrupted. If you have a dynamic codebase (where classes are downloaded from server when client needs them) this could happen when the client requests the class and it gets garbled in transmission, or the ...

38. how can 2 client communicate each other using RMI    coderanch.com

Hi Friends I know how to access a remote method from the client but i want to communicate 2 clients i dont know how to do that can anyone give me some idea or sample code for how v can make 2 clients to communicate throu server using RMI.I thought of doing a chat in LAN using the idea/concept. Help Me ...

39. Implemet rmi Client on an Applet    coderanch.com

40. RMI client side compilation    coderanch.com

hi there, i'm in the midde of my RMI "hello world" equivalent. the server is up and running, stub / skeletons are generated. i've a problem understanding the mechanism / code base the client needs. here's my setup: server side - interface MyService - class MyServiceImpl - class MyService_Skel (-class MyServiceRegistration) client side - class MyService_Stub (manually copied over from server) ...

41. RMI MVC client calls hang    coderanch.com

I've written an mvc style program that will use RMI to speak between the view and model. Program works without using RMI (setting up model and view in same JVM) however when I try to use RMI I have problems. I have successfully bound my Model to the registry ( the view can get data from it, etc). My view implements ...

42. Multiple clients in RMI    coderanch.com

On the server side of RMI, there is this: MyClass myObject = new MyClass(); Naming.rebind(myObject, "MyObject"): And on the client: MyClassIntf myObject = (MyClassIntf) Naming.lookup("//myserver/MyObject"); If multiple clients connect to the server, are they each getting a unique reference to myObject, or are they all pointing to the same one? I ask this because I'm beginning to think that I may ...

43. rmi client    coderanch.com

Does anyone know on what circumstances the connection parameters passed to ConnectionInterceptor.getConnectionKey uses host name as opposed to ip address? The EJB client provides host name. When I trace the client ORB I see IP address is going to ConnectionKey parameter. I have another client (client to another EJB apps. Both EJB apps are hosted on the same server), which provides ...

44. My RMI client consists of a Java command-line app    coderanch.com

Hello, My RMI client consists of a Java command-line app that uses Naming.lookup to obtain a reference to the remote interface. As one needs to typecast the return object to the remote interface, the client code depends on the remote interface for successful compilation and execution. Also, I have a data class that is used by both the RMI server components ...

45. RMI Server and Client behind two different routers    coderanch.com

Hello I wrote a RMI server and a RMI client. The client calls some methods on the server and the server keeps a reference of the client to send some events. Everything works great on the local network. I tried to run it over the internet and in order to do so, set the property java.rmi.server.hostname=[public-ip-of-the-server-router]. I now have two different ...

46. How to get Client IP At Server Side in RMI    coderanch.com

Hi Friends I have developed a java web service. It is working fine. Now I need to get client IP address when user trying to call a method on server interfaces. At server end in xxxxxImpl.java file I have implement ServletLifeCycle Interface and implement init() and destroy() methods. When user try to call any method on server interface then this init() ...

47. RMI: Compiling Client Class    coderanch.com

Hello Friends, When I am Compiling client class in RMI, its not compiling AS it required the Remote Interface to collect the reference which it got from look up.And i dont want to manually copy that Remote Interface from server to client. Can anyone tell me the way by which client automatically got that interface and other needed claases from server. ...

48. rmi,unknown host from client    coderanch.com

I've tried to run rmi example from sun page. The server is running but when I try to run client, the following error is shown: C:\rmi>java -cp c:\rmi;c:\rmi\compute.jar;c:\rmi\client -Djava.rmi.server.codeba se=file:/c:/rmi/client -Djava.security.policy=client.policy client.ComputePi loc alhost 45 ComputePi exception: java.rmi.UnknownHostException: Unknown host: xyz; nested exception is: java.net.UnknownHostException: xyz 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.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unkn own ...

49. RMI server send message to client    coderanch.com

Hi. Is it possible for the RMI server to send a message to client ? Most of the time, it's the client that request object from the server but is it possible for the server to independently send a message to the client ? I would like to add a function in my program which uses RMI, where the server admin ...

51. can't solve the problem on RMI client code    coderanch.com

anyone who can help me with this code....see if there is any problem FYI i'm just a beginner in java application the rmi server code is running well but i can't really see the problem on how to solve the rmi client code(below); import java.rmi.*; import java.rmi.registry.*; //import java.net.*; public class RmiClient{ @SuppressWarnings("empty-statement") static public void main(String args[]){ ReceiveMessageInterface RmiServer = ...

52. Problem in fetching Client System date in RMI Approach    coderanch.com

Dear all, I am developing a project in RMI . When I run client and server both on the same machine, then new java.util.Date() fetches my current system date. The problem is I am not able to set different date values for my client and server respectively. Please tell me how to do it. Thanks in Advance.

53. identifying rmi client    coderanch.com

54. Can rmi server and client be in one java process    coderanch.com

Thank u. I am working on a comercial platform of which the installation guide says that it can be deployed in such a mode as rmi server and client are in one process and the performance is good for there is no marshalling and unmarshalling. I doubt it so much for I didn't find any such thing in the rmi specification. ...

55. Java RMI - is that possible to take client Desktop screen shot who are browsing our application    coderanch.com

Hi .. i wanted to taken user desktop screen shot when user abadon's the web page, prepare a report and send to admin mailbox. i could use java rmi and smtp to fullfill the requirement. But the following code when i run will take only the server(when application deployed) screenshot instead of user(client) screenshot of our webpage. Rectangle screenRect = new ...

57. RMI client application; copying a class    java-forums.org

Java Code: //Client gui java application for assignment 3 //Matthew Faria-Seerattan //Last updated: July 26 2011 //GUI; //clicking connect and disconnect pops up a dialog box //clicking a operation pops up a dialog box //clicking ok button displays the address and coordinates entered import javax.swing.*; import java.awt.event.*; import java.awt.*; import java.rmi.Naming; public class client extends JFrame{ private JRadioButton jrC, jrD; //connect ...

58. RMI with pluggable client desktop - looking for standard practices ideas    forums.oracle.com

Relatively new to java and now trying to learn by doing, so please excuse the lack of proper terminology (possibly). I will try my best to explain what I would like to do, I don't believe it to be that uncommon, I just need to define that 'missing link' that will get me started again. I'm going to deploy a jar ...

59. java.io.EOFException in RMI client    forums.oracle.com

public static void main(String[] args) throws Exception { System.setSecurityManager(new RMISecurityManager()); Registry reg = LocateRegistry.getRegistry(1099); System.out.println("Connected to existing registry."); TestImpl rt = new TestImpl(); reg.rebind("CurrentRates", rt); System.out.println("Use the current interest rate"); } } The server runs fine. I have the client on the same machine, which I figured would be fine as long as I set the RMI hostname to "localhost" which ...

61. How to Identify a client application in an RMI environment    forums.oracle.com

That is very good and this is exactly what I am currently doing. The thing is, I am modifying my RMI-based application to socket-based, and when using sockets, the Selector.select() returns the SocketChannel of the client, so I don't need to force the client to send a token to identify itself. I want to keep method parameters in both RMI- and ...

62. Returning information about the client with RMI    forums.oracle.com

Does anyone know of a way to retrieve any details about the particular client that calls an RMI method? I have the RMI server as a Remote using UnicastRemoteObject.exportObject(this, port, someSocketFactory, someSocketFactory). The clients have callback methods, so are exported in a similar way (UnicastRemoteObject.exportObject(this)) and then the RemoteStub is stored on the server. Ideally I want to be able to ...

63. Background saving for client runing on rmi    forums.oracle.com

I was thinking of using a background thread that saves the current state of the client lets says every 2mins but i cant seem to put it all together so i was looking for advice from experts here on how i can save the current state of a client and restore it back when needed.

64. Using an RMI Client to connect to a Server.    forums.oracle.com

65. RMI Client Issue    forums.oracle.com

Hello, Here is my client side RMI program: import java.rmi.*; public class MyRemoteClient { public static void main(String args[]) { MyRemoteClient mm = new MyRemoteClient(); mm.go(); } public void go(){ try{ MyRemote service2 = (MyRemote) Naming.lookup("rmi://xxx.xxx.xx.xx/Hello"); String s = service2.sayHello(); System.out.println(s); } catch(Exception ex){ex.printStackTrace();} } } Having started RMI Registry and Service Implementor code on the server, if I try to ...

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