Hello,
I have written a FTP server on top of Avalon. I am
planning to go for Apache way. Initially it didn't
have a remote admin. So I have written a RMI based
remote admin. When I am running the server in
stand-alone mode (not based on Avalon), it is running
perfectly. But inside Avalon it is throwing exception.
My server configuration method is like:
/**
* Configure the server.
*
* @param conf the XML configuration block
*/
public void configure(Configuration conf) throws
ConfigurationException {
try {
mConfig = new FtpConfig(conf);
UnicastRemoteObject.exportObject(this);
if(mConfig.isRemoteAdminSupported()) {
mConfig.getRmiRegistry().rebind(BIND_NAME,
this);
}
}
catch(Exception ex) {
ex.printStackTrace();
throw new
ConfigurationException(ex.getMessage(), ex);
}
}
Inside FtpConfig constructor, I am creating RMI
registry (if necessary) and exporting the object.
My problems are:
1. I am not able to use default RMI port (1099). So I
am using some other port.
2. I am not able to export. The stack trace:
java.rmi.server.ExportException: internal error: ObjID
already in use
at
sun.rmi.transport.ObjectTable.putTarget(ObjectTable.java:164)
at
sun.rmi.transport.Transport.exportObject(Transport.java:71)
at
sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:184)
at
sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:319)
at
sun.rmi.transport.LiveRef.exportObject(LiveRef.java:119)
at
sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:125)
at
sun.rmi.registry.RegistryImpl.setup(RegistryImpl.java:95)
at
sun.rmi.registry.RegistryImpl.<init>(RegistryImpl.java:81)
at
java.rmi.registry.LocateRegistry.createRegistry(LocateRegistry.java:167)
at
ftpserver.FtpConfig.<init>(FtpConfig.java:124)
at
ftpserver.FtpServerImpl.configure(FtpServerImpl.java:91)
at
org.apache.avalon.phoenix.engine.phases.StartupPhase.visitBlock(Unknown
Source)
at
org.apache.avalon.phoenix.engine.blocks.BlockDAG.visitBlock(Unknown
Source)
at
org.apache.avalon.phoenix.engine.blocks.BlockDAG.walkGraph(Unknown
Source)
at
org.apache.avalon.phoenix.engine.DefaultServerApplication.runPhase(Unknown
Source)
at
org.apache.avalon.phoenix.engine.DefaultServerApplication.start(Unknown
Source)
at
org.apache.avalon.framework.atlantis.AbstractKernel.startEntry(Unknown
Source)
at
org.apache.avalon.framework.atlantis.AbstractKernel.start(Unknown
Source)
at
org.apache.avalon.phoenix.engine.PhoenixEmbeddor.start(Unknown
Source)
at
org.apache.avalon.phoenix.engine.Main.execute(Unknown
Source)
at
org.apache.avalon.phoenix.engine.Main$1.run(Unknown
Source)
at
java.security.AccessController.doPrivileged(Native
Method)
at
org.apache.avalon.phoenix.engine.Main.execute(Unknown
Source)
at
org.apache.avalon.phoenix.engine.Main.main(Unknown
Source)
at java.lang.reflect.Method.invoke(Native
Method)
at
org.apache.avalon.phoenix.engine.loader.PhoenixLoader$1.run(Unknown
Source)
at
java.security.AccessController.doPrivileged(Native
Method)
at
org.apache.avalon.phoenix.engine.loader.PhoenixLoader.runSystem(Unknown
Source)
at
org.apache.avalon.phoenix.engine.loader.PhoenixLoader.main(Unknown
Source)
Thanks,
Rana.
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