--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.net.http/share/classes/java/net/http/internal/websocket/RawChannel.java	Wed Feb 07 14:17:24 2018 +0000
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2015, 2018, 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.net.http.internal.websocket;
+
+import java.io.Closeable;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ClosedChannelException;
+
+/*
+ * I/O abstraction used to implement WebSocket.
+ *
+ * @since 9
+ */
+public interface RawChannel extends Closeable {
+
+    interface Provider {
+
+        RawChannel rawChannel() throws IOException;
+    }
+
+    interface RawEvent {
+
+        /*
+         * Returns the selector op flags this event is interested in.
+         */
+        int interestOps();
+
+        /*
+         * Called when event occurs.
+         */
+        void handle();
+    }
+
+    /*
+     * Registers given event whose callback will be called once only (i.e.
+     * register new event for each callback).
+     *
+     * Memory consistency effects: actions in a thread calling registerEvent
+     * happen-before any subsequent actions in the thread calling event.handle
+     */
+    void registerEvent(RawEvent event) throws IOException;
+
+    /**
+     * Hands over the initial bytes. Once the bytes have been returned they are
+     * no longer available and the method will throw an {@link
+     * IllegalStateException} on each subsequent invocation.
+     *
+     * @return the initial bytes
+     * @throws IllegalStateException
+     *         if the method has been already invoked
+     */
+    ByteBuffer initialByteBuffer() throws IllegalStateException;
+
+    /*
+     * Returns a ByteBuffer with the data read or null if EOF is reached. Has no
+     * remaining bytes if no data available at the moment.
+     */
+    ByteBuffer read() throws IOException;
+
+    /*
+     * Writes a sequence of bytes to this channel from a subsequence of the
+     * given buffers.
+     */
+    long write(ByteBuffer[] srcs, int offset, int length) throws IOException;
+
+    /**
+     * Shutdown the connection for reading without closing the channel.
+     *
+     * <p> Once shutdown for reading then further reads on the channel will
+     * return {@code null}, the end-of-stream indication. If the input side of
+     * the connection is already shutdown then invoking this method has no
+     * effect.
+     *
+     * @throws ClosedChannelException
+     *         If this channel is closed
+     * @throws IOException
+     *         If some other I/O error occurs
+     */
+    void shutdownInput() throws IOException;
+
+    /**
+     * Shutdown the connection for writing without closing the channel.
+     *
+     * <p> Once shutdown for writing then further attempts to write to the
+     * channel will throw {@link ClosedChannelException}. If the output side of
+     * the connection is already shutdown then invoking this method has no
+     * effect.
+     *
+     * @throws ClosedChannelException
+     *         If this channel is closed
+     * @throws IOException
+     *         If some other I/O error occurs
+     */
+    void shutdownOutput() throws IOException;
+
+    /**
+     * Closes this channel.
+     *
+     * @throws IOException
+     *         If an I/O error occurs
+     */
+    @Override
+    void close() throws IOException;
+}