org.bitcoinj.core.listeners

Interface GetDataEventListener

All Known Subinterfaces:

PeerDataEventListener

All Known Implementing Classes:

AbstractPeerDataEventListener, DownloadProgressTracker

public interface GetDataEventListener

Implementors can listen to events like blocks being downloaded/transactions being broadcast/connect/disconnects, they can pre-filter messages before they are processed by a Peer or PeerGroup, and they can provide transactions to remote peers when they ask for them.

Method Summary

Modifier and Type	Method and Description
java.util.List<Message>	getData(Peer peer, GetDataMessage m) Called when a peer receives a getdata message, usually in response to an "inv" being broadcast.

Method Detail

getData

@Nullable
java.util.List<Message> getData(Peer peer,
                                          GetDataMessage m)

Called when a peer receives a getdata message, usually in response to an "inv" being broadcast. Return as many items as possible which appear in the GetDataMessage, or null if you're not interested in responding.

Note that this will never be called if registered with any executor other than Threading.SAME_THREAD