--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.net.http/share/classes/java/net/http/internal/frame/DataFrame.java	Wed Feb 07 14:17:24 2018 +0000
@@ -0,0 +1,112 @@
+/*
+ * 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.frame;
+
+import java.net.http.internal.common.Utils;
+
+import java.nio.ByteBuffer;
+import java.util.List;
+
+public class DataFrame extends Http2Frame {
+
+    public static final int TYPE = 0x0;
+
+    // Flags
+    public static final int END_STREAM = 0x1;
+    public static final int PADDED = 0x8;
+
+    private int padLength;
+    private final List<ByteBuffer> data;
+    private final int dataLength;
+
+    public DataFrame(int streamid, int flags, ByteBuffer data) {
+        this(streamid, flags, List.of(data));
+    }
+
+    public DataFrame(int streamid, int flags, List<ByteBuffer> data) {
+        super(streamid, flags);
+        this.data = data;
+        this.dataLength = Utils.remaining(data, Integer.MAX_VALUE);
+    }
+
+    public DataFrame(int streamid, int flags, List<ByteBuffer> data, int padLength) {
+        this(streamid, flags, data);
+        if (padLength > 0) {
+            setPadLength(padLength);
+        }
+    }
+
+    @Override
+    public int type() {
+        return TYPE;
+    }
+
+    @Override
+    int length() {
+        return dataLength + (((flags & PADDED) != 0) ? (padLength + 1) : 0);
+    }
+
+    @Override
+    public String flagAsString(int flag) {
+        switch (flag) {
+        case END_STREAM:
+            return "END_STREAM";
+        case PADDED:
+            return "PADDED";
+        }
+        return super.flagAsString(flag);
+    }
+
+    public List<ByteBuffer> getData() {
+        return data;
+    }
+
+    public int getDataLength() {
+        return dataLength;
+    }
+
+    int getPadLength() {
+        return padLength;
+    }
+
+    public void setPadLength(int padLength) {
+        this.padLength = padLength;
+        flags |= PADDED;
+    }
+
+    public int payloadLength() {
+        // RFC 7540 6.1:
+        // The entire DATA frame payload is included in flow control,
+        // including the Pad Length and Padding fields if present
+        if ((flags & PADDED) != 0) {
+            return dataLength + (1 + padLength);
+        } else {
+            return dataLength;
+        }
+    }
+
+
+}