GetBlocksMessage (bitcoinj-core 0.17-alpha1 API)

java.lang.Object
- org.bitcoinj.core.Message
- - org.bitcoinj.core.GetBlocksMessage

Direct Known Subclasses:

GetHeadersMessage
```
public class GetBlocksMessage
extends Message
```
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 class org.bitcoinj.core.Message
  MAX_SIZE, params, payload, serializer

Constructor Summary

Constructors
Constructor	Description
`GetBlocksMessage(NetworkParameters params, java.nio.ByteBuffer payload)`
`GetBlocksMessage(NetworkParameters params, BlockLocator locator, Sha256Hash stopHash)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`bitcoinSerializeToStream(java.io.OutputStream stream)`	Serializes this message to the provided stream.
`boolean`	`equals(java.lang.Object o)`
`BlockLocator`	`getLocator()`
`Sha256Hash`	`getStopHash()`
`int`	`hashCode()`
`protected void`	`parse()`
`java.lang.String`	`toString()`

Methods inherited from class org.bitcoinj.core.Message
bitcoinSerialize, getHash, getMessageSize, getParams, readByte, readByteArray, readBytes, readHash, readInt32, readInt64, readStr, readUint32, readUint64, readVarInt, skipBytes, unCache, unsafeBitcoinSerialize

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

version
```
protected long version
```

locator
```
protected BlockLocator locator
```

stopHash
```
protected Sha256Hash stopHash
```

Constructor Detail

GetBlocksMessage

public GetBlocksMessage(NetworkParameters params,
                        BlockLocator locator,
                        Sha256Hash stopHash)

GetBlocksMessage

public GetBlocksMessage(NetworkParameters params,
                        java.nio.ByteBuffer payload)
                 throws ProtocolException

Throws:: ProtocolException

Method Detail
- parse
```
protected void parse()
              throws java.nio.BufferUnderflowException,
                     ProtocolException
```
  Specified by:
  
  parse in class Message
  
  Throws:
  
  java.nio.BufferUnderflowException
  
  ProtocolException
- getLocator
```
public BlockLocator getLocator()
```
- getStopHash
```
public Sha256Hash getStopHash()
```
- toString
```
public java.lang.String toString()
```
  Overrides:
  
  toString in class java.lang.Object
- bitcoinSerializeToStream
```
protected void bitcoinSerializeToStream(java.io.OutputStream stream)
                                 throws java.io.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:
  
  java.io.IOException
- equals
```
public boolean equals(java.lang.Object o)
```
  Overrides:
  
  equals in class java.lang.Object
- hashCode
```
public int hashCode()
```
  Overrides:
  
  hashCode in class java.lang.Object