--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/http2/server/ExceptionallyCloseable.java	Mon Nov 27 16:40:01 2017 +0000
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ * 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.
+ */
+
+import java.io.Closeable;
+import java.io.IOException;
+
+/**
+ * Implemented by closeable objects which might be able to report
+ * an error when closed due to exceptional conditions.
+ */
+public interface ExceptionallyCloseable extends Closeable {
+
+    /**
+     * Called when an instance of {@code ExceptionallyCloseable} is closed
+     * due to some exceptional condition revealed by {@code cause}.
+     *
+     * @implSpec The default implementation of this method simply calls
+     *           {@link #close()}. Implementation of this interface are
+     *           suppose to override this method in order to ensure that
+     *           the cause is properly reported.
+     *
+     * @param cause The reason for which the object is closed.
+     * @throws IOException if {@link #close()} fails.
+     */
+    public default void closeExceptionally(Throwable cause) throws IOException {
+        close();
+    }
+
+    public static void close(Throwable t, Closeable c) throws IOException {
+        if (c instanceof ExceptionallyCloseable) {
+            ((ExceptionallyCloseable)c).closeExceptionally(t);
+        } else {
+            c.close();
+        }
+    }
+}