org.bitcoinj.core

Class TransactionBroadcast

java.lang.Object

org.bitcoinj.core.TransactionBroadcast

public class TransactionBroadcast
extends java.lang.Object

Represents a single transaction broadcast that we are performing. A broadcast occurs after a new transaction is created (typically by a Wallet and needs to be sent to the network. A broadcast can succeed or fail. A success is defined as seeing the transaction be announced by peers via inv messages, thus indicating their acceptance. A failure is defined as not reaching acceptance within a timeout period, or getting an explicit reject message from a peer indicating that the transaction was not acceptable.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	TransactionBroadcast.ProgressCallback An interface for receiving progress information on the propagation of the tx, from 0.0 to 1.0

Field Summary

Fields

Modifier and Type	Field and Description
static java.util.Random	random Used for shuffling the peers before broadcast: unit tests can replace this to make themselves deterministic.

Method Summary

Modifier and Type	Method and Description
com.google.common.util.concurrent.ListenableFuture<Transaction>	broadcast()
static TransactionBroadcast	createMockBroadcast(Transaction tx, com.google.common.util.concurrent.SettableFuture<Transaction> future)
com.google.common.util.concurrent.ListenableFuture<Transaction>	future()
void	setMinConnections(int minConnections)
void	setProgressCallback(TransactionBroadcast.ProgressCallback callback) Sets the given callback for receiving progress values, which will run on the user thread.
void	setProgressCallback(TransactionBroadcast.ProgressCallback callback, java.util.concurrent.Executor executor) Sets the given callback for receiving progress values, which will run on the given executor.

Methods inherited from class java.lang.Object

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

Field Detail

random

public static java.util.Random random

Used for shuffling the peers before broadcast: unit tests can replace this to make themselves deterministic.

Method Detail

createMockBroadcast

public static TransactionBroadcast createMockBroadcast(Transaction tx,
                                                       com.google.common.util.concurrent.SettableFuture<Transaction> future)

future

public com.google.common.util.concurrent.ListenableFuture<Transaction> future()

setMinConnections

public void setMinConnections(int minConnections)

broadcast

public com.google.common.util.concurrent.ListenableFuture<Transaction> broadcast()

setProgressCallback

public void setProgressCallback(TransactionBroadcast.ProgressCallback callback)

Sets the given callback for receiving progress values, which will run on the user thread. See Threading for details. If the broadcast has already started then the callback will be invoked immediately with the current progress.

setProgressCallback

public void setProgressCallback(TransactionBroadcast.ProgressCallback callback,
                                @Nullable
                                java.util.concurrent.Executor executor)

Sets the given callback for receiving progress values, which will run on the given executor. If the executor is null then the callback will run on a network thread and may be invoked multiple times in parallel. You probably want to provide your UI thread or Threading.USER_THREAD for the second parameter. If the broadcast has already started then the callback will be invoked immediately with the current progress.