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package java.rmi.server;

import java.io.*;
import java.net.*;


An RMIClientSocketFactory instance is used by the RMI runtime
in order to obtain client sockets for RMI calls.  A remote object can be
associated with an RMIClientSocketFactory when it is
created/exported via the constructors or exportObject methods
of java.rmi.server.UnicastRemoteObject and
java.rmi.activation.Activatable .

An RMIClientSocketFactory instance associated with a remote
object will be downloaded to clients when the remote object's reference is
transmitted in an RMI call.  This RMIClientSocketFactory will
be used to create connections to the remote object for remote method calls.

An RMIClientSocketFactory instance can also be associated
with a remote object registry so that clients can use custom socket
communication with a remote object registry.

An implementation of this interface should be serializable and should implement Object.equals to return true when
passed an instance that represents the same (functionally equivalent)
client socket factory, and false otherwise (and it should also implement Object.hashCode consistently with its Object.equals implementation).

Author: Ann Wollrath,  Peter Jones
See Also:
Since:  1.2
/**
 * An <code>RMIClientSocketFactory</code> instance is used by the RMI runtime
 * in order to obtain client sockets for RMI calls.  A remote object can be
 * associated with an <code>RMIClientSocketFactory</code> when it is
 * created/exported via the constructors or <code>exportObject</code> methods
 * of <code>java.rmi.server.UnicastRemoteObject</code> and
 * <code>java.rmi.activation.Activatable</code> .
 *
 * <p>An <code>RMIClientSocketFactory</code> instance associated with a remote
 * object will be downloaded to clients when the remote object's reference is
 * transmitted in an RMI call.  This <code>RMIClientSocketFactory</code> will
 * be used to create connections to the remote object for remote method calls.
 *
 * <p>An <code>RMIClientSocketFactory</code> instance can also be associated
 * with a remote object registry so that clients can use custom socket
 * communication with a remote object registry.
 *
 * <p>An implementation of this interface should be serializable and
 * should implement {@link Object#equals} to return <code>true</code> when
 * passed an instance that represents the same (functionally equivalent)
 * client socket factory, and <code>false</code> otherwise (and it should also
 * implement {@link Object#hashCode} consistently with its
 * <code>Object.equals</code> implementation).
 *
 * @author  Ann Wollrath
 * @author  Peter Jones
 * @since   1.2
 * @see     java.rmi.server.UnicastRemoteObject
 * @see     java.rmi.activation.Activatable
 * @see     java.rmi.registry.LocateRegistry
 */
public interface RMIClientSocketFactory {

    
Create a client socket connected to the specified host and port.

Params:
  • host –   the host name
  • port –   the port number
Throws:
  • IOException – if an I/O error occurs during socket creation
Returns:a socket connected to the specified host and port.
Since:1.2
/**
     * Create a client socket connected to the specified host and port.
     * @param  host   the host name
     * @param  port   the port number
     * @return a socket connected to the specified host and port.
     * @exception IOException if an I/O error occurs during socket creation
     * @since 1.2
     */
    public Socket createSocket(String host, int port)
        throws IOException;
}