com.google.bitcoin.core.GetDataMessage Maven / Gradle / Ivy
The newest version!
/**
* Copyright 2011 Google Inc.
*
* 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;
/**
* Represents the "getdata" P2P network message, which requests the contents of blocks or transactions given their
* hashes.
*/
public class GetDataMessage extends ListMessage {
private static final long serialVersionUID = 2754681589501709887L;
public GetDataMessage(NetworkParameters params, byte[] payloadBytes) throws ProtocolException {
super(params, payloadBytes);
}
/**
* Deserializes a 'getdata' message.
* @param params NetworkParameters object.
* @param msg Bitcoin protocol formatted byte array containing message content.
* @param parseLazy Whether to perform a full parse immediately or delay until a read is requested.
* @param parseRetain Whether to retain the backing byte array for quick reserialization.
* If true and the backing byte array is invalidated due to modification of a field then
* the cached bytes may be repopulated and retained if the message is serialized again in the future.
* @param length The length of message if known. Usually this is provided when deserializing of the wire
* as the length will be provided as part of the header. If unknown then set to Message.UNKNOWN_LENGTH
* @throws ProtocolException
*/
public GetDataMessage(NetworkParameters params, byte[] msg, boolean parseLazy, boolean parseRetain, int length)
throws ProtocolException {
super(params, msg, parseLazy, parseRetain, length);
}
public GetDataMessage(NetworkParameters params) {
super(params);
}
public void addTransaction(Sha256Hash hash) {
addItem(new InventoryItem(InventoryItem.Type.Transaction, hash));
}
public void addBlock(Sha256Hash hash) {
addItem(new InventoryItem(InventoryItem.Type.Block, hash));
}
}