com.google.bitcoin.core.EmptyMessage Maven / Gradle / Ivy
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/**
* Copyright 2011 Steve Coughlan.
*
* 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;
/**
* Parent class for header only messages that don't have a payload.
* Currently this includes getaddr, ping, verack as well as the special bitcoinj class UnknownMessage
*
* @author git
*/
public abstract class EmptyMessage extends Message {
private static final long serialVersionUID = 8240801253854151802L;
public EmptyMessage() {
length = 0;
}
public EmptyMessage(NetworkParameters params) {
super(params);
length = 0;
}
public EmptyMessage(NetworkParameters params, byte[] msg, int offset) throws ProtocolException {
super(params, msg, offset);
length = 0;
}
@Override
final protected void bitcoinSerializeToStream(OutputStream stream) throws IOException {
}
@Override
public int getMessageSize() {
return 0;
}
/* (non-Javadoc)
* @see Message#parse()
*/
@Override
void parse() throws ProtocolException {
}
/* (non-Javadoc)
* @see Message#parseLite()
*/
@Override
protected void parseLite() throws ProtocolException {
length = 0;
}
/* (non-Javadoc)
* @see Message#ensureParsed()
*/
@Override
public void ensureParsed() throws ProtocolException {
parsed = true;
}
/* (non-Javadoc)
* @see Message#bitcoinSerialize()
*/
@Override
public byte[] bitcoinSerialize() {
return new byte[0];
}
}