1 /*
   2  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.incubator.http.internal.frame;
  27 
  28 public class PingFrame extends Http2Frame {
  29 
  30 
  31     private final byte[] data;
  32 
  33     public static final int TYPE = 0x6;
  34 
  35     // Flags
  36     public static final int ACK = 0x1;
  37 
  38     public PingFrame(int flags, byte[] data) {
  39         super(0, flags);
  40         assert data.length == 8;
  41         this.data = data;
  42     }
  43 
  44     @Override
  45     public int type() {
  46         return TYPE;
  47     }
  48 
  49     @Override
  50     int length() {
  51         return 8;
  52     }
  53 
  54     @Override
  55     public String flagAsString(int flag) {
  56         switch (flag) {
  57         case ACK:
  58             return "ACK";
  59         }
  60         return super.flagAsString(flag);
  61     }
  62 
  63     public byte[] getData() {
  64         return data;
  65     }
  66 
  67 }