src/java.base/unix/classes/java/net/PlainDatagramSocketImpl.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2007, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2007, 2017, 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

@@ -83,14 +83,22 @@
         }
     }
 
     protected Set<SocketOption<?>> supportedOptions() {
         HashSet<SocketOption<?>> options = new HashSet<>(super.supportedOptions());
-        options.addAll(extendedOptions.options());
+        addExtSocketOptions(extendedOptions.options(), options);
         return options;
     }
 
+    private void addExtSocketOptions(Set<SocketOption<?>> extOptions,
+            Set<SocketOption<?>> options) {
+        extOptions.stream().filter((option) -> (!option.name().
+                equals("TCP_QUICKACK"))).forEachOrdered((option) -> {
+            options.add(option);
+        }); // TCP_QUICKACK is applicable for TCP Sockets only.
+    }
+
     protected void socketSetOption(int opt, Object val) throws SocketException {
         if (opt == SocketOptions.SO_REUSEPORT &&
             !supportedOptions().contains(StandardSocketOptions.SO_REUSEPORT)) {
             throw new UnsupportedOperationException("unsupported option");
         }