Package org.bitcoinj.core

Class HeadersMessage

java.lang.Object

org.bitcoinj.core.Message

org.bitcoinj.core.HeadersMessage

public class HeadersMessage
extends Message

A protocol message that contains a repeated series of block headers, sent in response to the "getheaders" command. This is useful when you want to traverse the chain but know you don't care about the block contents, for example, because you have a freshly created wallet with no keys.

Instances of this class are not safe for use by multiple threads.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	MAX_HEADERS

Fields inherited from class org.bitcoinj.core.Message

cursor, length, MAX_SIZE, offset, params, payload, recached, serializer, UNKNOWN_LENGTH

Constructor Summary

Constructors

Constructor	Description
HeadersMessage(NetworkParameters params, byte[] payload)
HeadersMessage(NetworkParameters params, List<Block> headers)
HeadersMessage(NetworkParameters params, Block... headers)

Method Summary

Modifier and Type	Method	Description
void	bitcoinSerializeToStream(OutputStream stream)	Serializes this message to the provided stream.
List<Block>	getBlockHeaders()
protected void	parse()

Methods inherited from class org.bitcoinj.core.Message

adjustLength, bitcoinSerialize, bitcoinSerialize, getHash, getMessageSize, getParams, hasMoreBytes, isCached, isRecached, readByte, readByteArray, readBytes, readHash, readInt64, readStr, readUint32, readUint64, readVarInt, readVarInt, setSerializer, unCache, unsafeBitcoinSerialize

Methods inherited from class java.lang.Object

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

Field Details

MAX_HEADERS

public static final int MAX_HEADERS

See Also:

• Constant Field Values

Constructor Details

HeadersMessage

public HeadersMessage(NetworkParameters params,
 byte[] payload)
               throws ProtocolException

Throws:

ProtocolException

HeadersMessage

public HeadersMessage(NetworkParameters params,
 Block... headers)
               throws ProtocolException

Throws:

ProtocolException

HeadersMessage

public HeadersMessage(NetworkParameters params,
 List<Block> headers)
               throws ProtocolException

Throws:

ProtocolException

Method Details

bitcoinSerializeToStream

public void bitcoinSerializeToStream(OutputStream stream)
                              throws IOException

Description copied from class: Message

Serializes this message to the provided stream. If you just want the raw bytes use bitcoinSerialize().

Overrides:

bitcoinSerializeToStream in class Message

Throws:

IOException

parse

protected void parse()
              throws ProtocolException

Specified by:

parse in class Message

Throws:

ProtocolException

getBlockHeaders

public List<Block> getBlockHeaders()