B Properties In RMI

Server Properties
Activation Properties
Other Properties

B.1 Server Properties

The following table contains a list of properties typically used by servers for configuration. Note that properties are typically restricted from being set from applets.

`java.rmi.server.codebase`

Indicates the codebase URL of classes originating from the JVM. The codebase property is used to annotate class descriptors of classes originating from a JVM so that the class for an object sent as a parameter or return value in a remote method call can be loaded at the receiver.

`java.rmi.server.disableHttp`

The implementation of RMI calls through firewalls via proxies has been removed as of JDK 9.

`java.rmi.server.hostname`

RMI uses IP addresses to indicate the location of a server (embedded in a remote reference). If the use of a hostname is desired, this property is used to specify the fully-qualified hostname for RMI to use for remote objects exported to the local JVM. The property can also be set to an IP address. Not set by default.

`java.rmi.dgc.leaseValue`

Sets the lease duration that the RMI runtime grants to clients referencing remote objects in the JVM. Defaults to 10 minutes.

`java.rmi.server.logCalls`

If set to true, server call logging is turned on and prints to stderr. Defaults to false.

`java.rmi.server.useCodebaseOnly`

If set to true, when RMI loads classes (if not available via CLASSPATH) they are only loaded using the URL specified by the property java.rmi.server.codebase.

`java.rmi.server.useLocalHostname`

If the java.rmi.server.hostname property is not set and this property is set, then RMI will not use an IP address to denote the location (embedded in remote references) of remote objects that are exported into the JVM. Instead, RMI will use the value of the call to the method java.net.InetAddress.getLocalHost.

B.2 Activation Properties

The following table contains a list of properties used in activation.

`java.rmi.activation.port`

The port number on which the ActivationSystem is exported. This port number should be specified in a JVM if the activation daemon rmid uses a port other than the default.

`java.rmi.activation.activator.class`

The class that implements the interface java.rmi.activation.Activator. This property is used internally to locate the resident implementation of the Activator from which the stub class name can be found.

B.3 Other Properties

These properties are used to locate specific implementation classes within implementation packages. Note: all these properties have been deprecated as of Java 2 SDK, Standard Edition, v1.2.

`java.rmi.loader.packagePrefix`

Note: this property is deprecated as of Java 2 SDK, Standard Edition, v1.2

The package prefix for the class that implements the interface java.rmi.server.LoaderHandler. Defaults to sun.rmi.server.

`java.rmi.registry.packagePrefix`

Note: this property is deprecated as of Java 2 SDK, Standard Edition, v1.2

The package prefix for the class that implements the interface java.rmi.registry.RegistryHandler. Defaults to sun.rmi.registry.

`java.rmi.server.packagePrefix`

Note: this property is deprecated as of Java 2 SDK, Standard Edition, v1.2

The server package prefix. Assumes that the implementation of the server reference classes (such as UnicastRef and UnicastServerRef) are located in the package defined by the prefix. Defaults to sun.rmi.server.