diff -r 4ebc2e2fb97c -r 71c04702a3d5 src/java.rmi/share/classes/java/rmi/server/RMIServerSocketFactory.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.rmi/share/classes/java/rmi/server/RMIServerSocketFactory.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 1998, 2001, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package java.rmi.server;
+
+import java.io.*;
+import java.net.*;
+
+/**
+ * An <code>RMIServerSocketFactory</code> instance is used by the RMI runtime
+ * in order to obtain server sockets for RMI calls.  A remote object can be
+ * associated with an <code>RMIServerSocketFactory</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>RMIServerSocketFactory</code> instance associated with a remote
+ * object is used to obtain the <code>ServerSocket</code> used to accept
+ * incoming calls from clients.
+ *
+ * <p>An <code>RMIServerSocketFactory</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 implement {@link Object#equals} to return <code>true</code> when
+ * passed an instance that represents the same (functionally equivalent)
+ * server 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 RMIServerSocketFactory {
+
+    /**
+     * Create a server socket on the specified port (port 0 indicates
+     * an anonymous port).
+     * @param  port the port number
+     * @return the server socket on the specified port
+     * @exception IOException if an I/O error occurs during server socket
+     * creation
+     * @since 1.2
+     */
+    public ServerSocket createServerSocket(int port)
+        throws IOException;
+}