rmi

How to set JMX remote port system environment parameters through java code for remote monitoring?

非 Y 不嫁゛ 提交于 2020-01-10 08:26:51
问题 I have a program which requires dynamically (i.e. at run time) opening an available socket and start a JMX agent on it. This JMX parameters are being set inside the Java code and not through command line. This works fine. Thereafter it is needed to monitor( i.e issue JMX commands etc) through Java Visual VM remotely The RMI server agent in the program is on the lines of out of box management described at: http://download.oracle.com/javase/6/docs/technotes/guides/management/agent.html The

Java RMI : connection refused

这一生的挚爱 提交于 2020-01-09 03:53:51
问题 I have written following code for the client of RMI. But getting java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: java.net.ConnectException: Connection refused: connect code : import java.rmi.*; import java.net.*; import java.rmi.registry.*; class client { public static void main(String [] ars) { Iface serv; Registry r; String serveraddr = ars[0]; String serverport = ars[1]; String text = "Hey jude"; System.out.println("Sending" + text); try{ r =

rmi java.security.policy access denied

吃可爱长大的小学妹 提交于 2020-01-06 15:57:06
问题 I am new to RMI topic in java and i wana to create client server applicaiton using RMI, i followed this tutorial found in this link : RMI Tutorial using eclipse but i am using netbeans ,and here is server code: import java.rmi.*; import java.rmi.registry.LocateRegistry; import java.rmi.registry.Registry; import java.rmi.server.*; public class AdditionServer { public static void main (String[] argv) { try { if (System.getSecurityManager() == null) { System.setSecurityManager(new

rmi java.security.policy access denied

霸气de小男生 提交于 2020-01-06 15:56:59
问题 I am new to RMI topic in java and i wana to create client server applicaiton using RMI, i followed this tutorial found in this link : RMI Tutorial using eclipse but i am using netbeans ,and here is server code: import java.rmi.*; import java.rmi.registry.LocateRegistry; import java.rmi.registry.Registry; import java.rmi.server.*; public class AdditionServer { public static void main (String[] argv) { try { if (System.getSecurityManager() == null) { System.setSecurityManager(new

How can a process authenticate and communicate securely with another process on the same host

喜欢而已 提交于 2020-01-06 06:43:45
问题 I was trying to do this with Java RMI over SSL, but later I discovered that SSL certificates will provide host level authentication and NOT process level authentication. Also, I was storing the keystore's password in configuration; so the certificates can be used by another attacker process and it can get authenticate. 回答1: An X.509 certificate used for SSL/TLS could potentially be used to identify something else than a host name (this is already typically done for client certificates). There

Spring 3.0 RmiProxyFactoryBean: how to set connection timeout?

牧云@^-^@ 提交于 2020-01-05 09:14:10
问题 I need to add "test" functionality for RMI connection (checking if the server on the other side is available/existent). I have created this class/beans: public class MyRmiClientSocketFactory implements RMIClientSocketFactory { private int timeout; public void setTimeout(int timeout) { this.timeout = timeout; } @Override public Socket createSocket(String host, int port) throws IOException { final Socket socket = new Socket(); socket.setSoTimeout(timeout); socket.setSoLinger(false, 0); socket

I am running a RMI application and no security manager: RMI class loader disabled exception comes

こ雲淡風輕ζ 提交于 2020-01-05 05:57:23
问题 This is the whole exception: Computeappengine exceptionRemoteException occurred in server thread; nested exception is: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: java.lang.ClassNotFoundException: Client.prog (no security manager: RMI class loader disabled) java.rmi.ServerException: RemoteException occurred in server thread; nested exception is: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is: java.lang

Is EJB middleware? Or is middleware used in EJB?

妖精的绣舞 提交于 2020-01-03 05:29:07
问题 I am confused between these two nuances: Is EJB itself middleware, or is there any middleware used in the deployment of EJB? Same goes for RMI- is RMI itself middleware or is middleware used in RMI? 回答1: Define Middleware, if it is in the middle what is it between? I agree with the basic idea of this Wikipedia definition: Middleware is a computer software that provides services to software applications beyond those available from the operating system. It can be described as "software glue".[1

JMeter - docker - java.net.connectexception

谁说胖子不能爱 提交于 2020-01-03 05:01:07
问题 I am trying to do a distributed load testing using JMeter in AWS EC2 instances. I have 1 master and 2 slaves. All are ubuntu instances. They all have java and jmeter installed. I am able to successfully execute the test in the slaves w/o issues. (When i do no use docker) (JMeter uses RMI to control slaves) Now, I am thinking of using docker in the slaves as I might be adding more slaves. I do not want to set up the slave machines everytime. So docker seems to be a good choice. In the docker

Non-Java JMX client

允我心安 提交于 2020-01-03 00:53:34
问题 Is it possible to create a JMX client that doesn't run on the JVM? From my understanding JMX is a protocol on top of other protocols (like RMI) so it should be possible to create a C or Go client. Any reason why this hasn't been done? I am aware of Jolokia and realise it can be used as a proxy. 来源: https://stackoverflow.com/questions/49207999/non-java-jmx-client