1 /*

     2  * Copyright (c) 2015, 2018, 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 java.net.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.clone();

    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.clone();

    65     }

    66 

    67 }