--- a/jdk/src/java.httpclient/share/classes/java/net/http/HttpClientImpl.java	Mon May 16 15:10:04 2016 +0100
+++ b/jdk/src/java.httpclient/share/classes/java/net/http/HttpClientImpl.java	Mon May 16 16:04:14 2016 +0100
@@ -35,6 +35,7 @@
 import java.nio.channels.SelectableChannel;
 import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
+import java.nio.channels.SocketChannel;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.Iterator;
@@ -155,6 +156,15 @@
         selmgr.register(exchange);
     }
 
+    /**
+     * Only used from RawChannel to disconnect the channel from
+     * the selector
+     */
+    void cancelRegistration(SocketChannel s) {
+        selmgr.cancel(s);
+    }
+
+
     Http2ClientImpl client2() {
         return client2;
     }
@@ -220,6 +230,13 @@
             selector.wakeup();
         }
 
+        synchronized void cancel(SocketChannel e) {
+            SelectionKey key = e.keyFor(selector);
+            if (key != null)
+                key.cancel();
+            selector.wakeup();
+        }
+
         void wakeupSelector() {
             selector.wakeup();
         }

--- a/jdk/src/java.httpclient/share/classes/java/net/http/HttpHeaders1.java	Mon May 16 15:10:04 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,29 +0,0 @@
-/*
- * Copyright (c) 2015, 2016, 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
- */
-
-package java.net.http;
-
-public interface HttpHeaders1 extends HttpHeaders {
-    public void makeUnmodifiable();
-}

--- a/jdk/src/java.httpclient/share/classes/java/net/http/HttpResponseImpl.java	Mon May 16 15:10:04 2016 +0100
+++ b/jdk/src/java.httpclient/share/classes/java/net/http/HttpResponseImpl.java	Mon May 16 16:04:14 2016 +0100
@@ -176,7 +176,7 @@
      *
      * @return
      */
-    RawChannel rawChannel() {
+    RawChannel rawChannel() throws IOException {
         if (rawchan == null) {
             rawchan = new RawChannel(request.client(), connection);
         }

--- a/jdk/src/java.httpclient/share/classes/java/net/http/RawChannel.java	Mon May 16 15:10:04 2016 +0100
+++ b/jdk/src/java.httpclient/share/classes/java/net/http/RawChannel.java	Mon May 16 16:04:14 2016 +0100
@@ -29,6 +29,7 @@
 import java.nio.channels.GatheringByteChannel;
 import java.nio.channels.SelectableChannel;
 import java.nio.channels.SelectionKey;
+import java.nio.channels.SocketChannel;
 
 //
 // Used to implement WebSocket. Each RawChannel corresponds to a TCP connection
@@ -56,9 +57,21 @@
     interface NonBlockingEvent extends RawEvent {
     }
 
-    RawChannel(HttpClientImpl client, HttpConnection connection) {
+    RawChannel(HttpClientImpl client, HttpConnection connection)
+                                                throws IOException {
         this.client = client;
         this.connection = connection;
+        SocketChannel chan = connection.channel();
+        client.cancelRegistration(chan);
+        chan.configureBlocking(false);
+    }
+
+    SocketChannel socketChannel() {
+        return connection.channel();
+    }
+
+    ByteBuffer getRemaining() {
+        return connection.getRemaining();
     }
 
     private class RawAsyncEvent extends AsyncEvent {

--- a/jdk/src/java.httpclient/share/classes/java/net/http/WSOpeningHandshake.java	Mon May 16 15:10:04 2016 +0100
+++ b/jdk/src/java.httpclient/share/classes/java/net/http/WSOpeningHandshake.java	Mon May 16 16:04:14 2016 +0100
@@ -24,6 +24,8 @@
  */
 package java.net.http;
 
+import java.io.UncheckedIOException;
+import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
 import java.nio.charset.StandardCharsets;
@@ -126,6 +128,8 @@
                         return CompletableFuture.completedFuture(result);
                     } catch (WebSocketHandshakeException e) {
                         return CompletableFuture.failedFuture(e);
+                    } catch (UncheckedIOException ee) {
+                        return CompletableFuture.failedFuture(ee.getCause());
                     }
                 });
     }
@@ -149,7 +153,12 @@
         checkAccept(response, h);
         checkExtensions(response, h);
         String subprotocol = checkAndReturnSubprotocol(response, h);
-        RawChannel channel = ((HttpResponseImpl) response).rawChannel();
+        RawChannel channel = null;
+        try {
+            channel = ((HttpResponseImpl) response).rawChannel();
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
         return new Result(subprotocol, channel);
     }