/*
* 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
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*/
package java.net.http;
import java.io.IOException;
import java.nio.ByteBuffer;
class PingFrame extends Http2Frame {
PingFrame() {
type = TYPE;
}
byte[] data;
public final static int TYPE = 0x6;
// Flags
public static final int ACK = 0x1;
@Override
String flagAsString(int flag) {
switch (flag) {
case ACK:
return "ACK";
}
return super.flagAsString(flag);
}
public void setData(byte[] data) {
if (data.length != 8) {
throw new IllegalArgumentException("Ping data not 8 bytes");
}
this.data = data;
}
public byte[] getData() {
return data;
}
@Override
void readIncomingImpl(ByteBufferConsumer bc) throws IOException {
if (length != 8) {
throw new IOException("Invalid Ping frame");
}
data = bc.getBytes(8);
}
@Override
void writeOutgoing(ByteBufferGenerator bg) {
if (data == null) {
data = new byte[] {0, 0, 0, 0, 0 ,0, 0, 0};
}
super.writeOutgoing(bg);
ByteBuffer buf = bg.getBuffer(8);
buf.put(data);
}
@Override
void computeLength() {
length = 8;
}
}