org.bitcoinj.core

Class GetDataMessage

java.lang.Object

org.bitcoinj.core.Message

org.bitcoinj.core.ListMessage

org.bitcoinj.core.GetDataMessage

All Implemented Interfaces:

Serializable

public class GetDataMessage
extends ListMessage

Represents the "getdata" P2P network message, which requests the contents of blocks or transactions given their hashes.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.bitcoinj.core.Message

Message.LazyParseException

Field Summary

Fields inherited from class org.bitcoinj.core.ListMessage

items, MAX_INVENTORY_ITEMS

Fields inherited from class org.bitcoinj.core.Message

checksum, cursor, length, MAX_SIZE, offset, params, parsed, parseLazy, parseRetain, payload, protocolVersion, recached, UNKNOWN_LENGTH

Constructor Summary

Constructors

Constructor and Description
GetDataMessage(NetworkParameters params)
GetDataMessage(NetworkParameters params, byte[] payloadBytes)
GetDataMessage(NetworkParameters params, byte[] payload, boolean parseLazy, boolean parseRetain, int length) Deserializes a 'getdata' message.

Method Summary

Modifier and Type	Method and Description
void	addBlock(Sha256Hash hash)
void	addFilteredBlock(Sha256Hash hash)
void	addTransaction(Sha256Hash hash)
Sha256Hash	getHashOf(int i)

Methods inherited from class org.bitcoinj.core.ListMessage

addItem, bitcoinSerializeToStream, equals, getItems, hashCode, parse, parseLite, removeItem

Methods inherited from class org.bitcoinj.core.Message

adjustLength, bitcoinSerialize, bitcoinSerialize, ensureParsed, getHash, getMessageSize, getParams, isCached, isParsed, isRecached, maybeParse, unCache, unsafeBitcoinSerialize

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GetDataMessage

public GetDataMessage(NetworkParameters params,
                      byte[] payloadBytes)
               throws ProtocolException

Throws:

ProtocolException

GetDataMessage

public GetDataMessage(NetworkParameters params,
                      byte[] payload,
                      boolean parseLazy,
                      boolean parseRetain,
                      int length)
               throws ProtocolException

Deserializes a 'getdata' message.

Parameters:

params - NetworkParameters object.

payload - Bitcoin protocol formatted byte array containing message content.

parseLazy - Whether to perform a full parse immediately or delay until a read is requested.

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.

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

GetDataMessage

public GetDataMessage(NetworkParameters params)

Method Detail

addTransaction

public void addTransaction(Sha256Hash hash)

addBlock

public void addBlock(Sha256Hash hash)

addFilteredBlock

public void addFilteredBlock(Sha256Hash hash)

getHashOf

public Sha256Hash getHashOf(int i)