Package nxt.peer

Class NetworkMessage.GetBlockMessage

java.lang.Object

nxt.peer.NetworkMessage

nxt.peer.NetworkMessage.GetBlockMessage

Enclosing class:

NetworkMessage

public static class NetworkMessage.GetBlockMessage
extends NetworkMessage

The GetBlock message is sent when a peer is notified that a new block is available. The Blocks message is returned in response. The sender can include a list of transactions to be excluded when creating the Blocks message. The sender must then supply the excluded transactions when it receives the Blocks message.

• Message identifier (long)
• Block identifier (long)
• Transaction exclusion BitSet (byte[])

Nested Class Summary

Nested classes/interfaces inherited from class nxt.peer.NetworkMessage

NetworkMessage.AddPeersMessage, NetworkMessage.BlockchainStateMessage, NetworkMessage.BlockIdsMessage, NetworkMessage.BlockInventoryMessage, NetworkMessage.BlocksMessage, NetworkMessage.BundlerRateMessage, NetworkMessage.CumulativeDifficultyMessage, NetworkMessage.ErrorMessage, NetworkMessage.GetBlockMessage, NetworkMessage.GetCumulativeDifficultyMessage, NetworkMessage.GetInfoMessage, NetworkMessage.GetMilestoneBlockIdsMessage, NetworkMessage.GetNextBlockIdsMessage, NetworkMessage.GetNextBlocksMessage, NetworkMessage.GetPeersMessage, NetworkMessage.GetTransactionsMessage, NetworkMessage.GetUnconfirmedTransactionsMessage, NetworkMessage.MilestoneBlockIdsMessage, NetworkMessage.TransactionsInventoryMessage, NetworkMessage.TransactionsMessage

Field Summary

Fields inherited from class nxt.peer.NetworkMessage

MAX_ARRAY_LENGTH, MAX_LIST_SIZE, MAX_LIST_SIZE_PRE_2_3_3, messageId

Constructor Summary

Constructors

Constructor	Description
GetBlockMessage(long blockId)	Construct a GetBlocks message
GetBlockMessage(long blockId, BitSet excludedTransactions)	Construct a GetBlock message Transactions can be excluded

Method Summary

Modifier and Type	Method	Description
protected NetworkMessage	constructMessage(ByteBuffer bytes)	Construct the message from the message bytes
long	getBlockId()	Get the block identifier
byte[]	getExcludedTransactions()	Get the excluded transaction identifiers

Methods inherited from class java.lang.Object

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

Constructor Details

GetBlockMessage

public GetBlockMessage(long blockId)

Construct a GetBlocks message

Parameters:

blockId - Block identifier

GetBlockMessage

public GetBlockMessage(long blockId,
 BitSet excludedTransactions)

Construct a GetBlock message Transactions can be excluded

Parameters:

blockId - Block identifier

excludedTransactions - Excluded transactions or null

Method Details

constructMessage

protected NetworkMessage constructMessage(ByteBuffer bytes)
                                   throws BufferOverflowException,
BufferUnderflowException,
nxt.peer.NetworkException

Construct the message from the message bytes

Overrides:

constructMessage in class NetworkMessage

Parameters:

bytes - Message bytes following the message name

Returns:

Message

Throws:

BufferOverflowException - Message buffer is too small

BufferUnderflowException - Message is too short

nxt.peer.NetworkException - Message is not valid

getBlockId

public long getBlockId()

Get the block identifier

Returns:

Block identifier

getExcludedTransactions

public byte[] getExcludedTransactions()

Get the excluded transaction identifiers

Returns:

Transaction identifiers