com.google.bitcoin.core.Ping Maven / Gradle / Ivy
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/**
* Copyright 2011 Noa Resare
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.bitcoin.core;
import java.io.IOException;
import java.io.OutputStream;
public class Ping extends Message {
private long nonce;
private boolean hasNonce;
public Ping(NetworkParameters params, byte[] payloadBytes) throws ProtocolException {
super(params, payloadBytes, 0);
}
/**
* Create a Ping with a nonce value.
* Only use this if the remote node has a protocol version > 60000
*/
public Ping(long nonce) {
this.nonce = nonce;
this.hasNonce = true;
}
/**
* Create a Ping without a nonce value.
* Only use this if the remote node has a protocol version <= 60000
*/
public Ping() {
this.hasNonce = false;
}
public void bitcoinSerializeToStream(OutputStream stream) throws IOException {
if (hasNonce)
Utils.int64ToByteStreamLE(nonce, stream);
}
@Override
void parse() throws ProtocolException {
try {
nonce = readInt64();
hasNonce = true;
} catch(ProtocolException e) {
hasNonce = false;
}
length = hasNonce ? 8 : 0;
}
@Override
protected void parseLite() {
}
boolean hasNonce() {
return hasNonce;
}
long getNonce() {
return nonce;
}
}