Package org.bitcoinj.core

Class GetBlocksMessage

java.lang.Object

org.bitcoinj.core.BaseMessage

org.bitcoinj.core.GetBlocksMessage

All Implemented Interfaces:

Message

Direct Known Subclasses:

GetHeadersMessage

public class GetBlocksMessage
extends BaseMessage

Represents the "getblocks" P2P network message, which requests the hashes of the parts of the block chain we're missing. Those blocks can then be downloaded with a GetDataMessage.

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

Field Summary

Fields

Modifier and Type	Field	Description
protected BlockLocator	locator
protected Sha256Hash	stopHash
protected long	version

Fields inherited from interface org.bitcoinj.core.Message

MAX_SIZE

Constructor Summary

Constructors

Constructor	Description
GetBlocksMessage(long protocolVersion, BlockLocator locator, Sha256Hash stopHash)

Method Summary

Modifier and Type	Method	Description
protected void	bitcoinSerializeToStream(OutputStream stream)	Serializes this message to the provided stream.
boolean	equals(Object o)
BlockLocator	getLocator()
Sha256Hash	getStopHash()
int	hashCode()
static GetBlocksMessage	read(ByteBuffer payload)	Deserialize this message from a given payload.
String	toString()

Methods inherited from class org.bitcoinj.core.BaseMessage

messageSize, serialize

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.bitcoinj.core.Message

bitcoinSerialize, getMessageSize, unsafeBitcoinSerialize

Field Details

version

protected long version

locator

protected BlockLocator locator

stopHash

protected Sha256Hash stopHash

Constructor Details

GetBlocksMessage

public GetBlocksMessage(long protocolVersion,
 BlockLocator locator,
 Sha256Hash stopHash)

Method Details

read

public static GetBlocksMessage read(ByteBuffer payload)
                             throws BufferUnderflowException,
ProtocolException

Deserialize this message from a given payload.

Parameters:

payload - payload to deserialize from

Returns:

read message

Throws:

BufferUnderflowException - if the read message extends beyond the remaining bytes of the payload

ProtocolException

getLocator

public BlockLocator getLocator()

getStopHash

public Sha256Hash getStopHash()

toString

public String toString()

Overrides:

toString in class Object

bitcoinSerializeToStream

protected void bitcoinSerializeToStream(OutputStream stream)
                                 throws IOException

Description copied from class: BaseMessage

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

Specified by:

bitcoinSerializeToStream in class BaseMessage

Throws:

IOException

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object