--- old/src/java.base/share/classes/java/net/DatagramSocket.java	2019-05-27 11:33:55.109804672 +0100
+++ new/src/java.base/share/classes/java/net/DatagramSocket.java	2019-05-27 11:33:54.825804682 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1995, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1995, 2019, 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
@@ -29,6 +29,7 @@
 import java.nio.channels.DatagramChannel;
 import java.security.AccessController;
 import java.security.PrivilegedExceptionAction;
+import java.util.Objects;
 import java.util.Set;
 import java.util.Collections;
 
@@ -1343,6 +1344,9 @@
     public <T> DatagramSocket setOption(SocketOption<T> name, T value)
         throws IOException
     {
+        Objects.requireNonNull(name);
+        if (isClosed())
+            throw new SocketException("Socket is closed");
         getImpl().setOption(name, value);
         return this;
     }
@@ -1371,6 +1375,9 @@
      * @since 9
      */
     public <T> T getOption(SocketOption<T> name) throws IOException {
+        Objects.requireNonNull(name);
+        if (isClosed())
+            throw new SocketException("Socket is closed");
         return getImpl().getOption(name);
     }