import com.google.bitcoin.net.BlockingClientManager; //导入依赖的package包/类
protected void initPeerGroup() {
    if (clientType == ClientType.NIO_CLIENT_MANAGER)
        peerGroup = new PeerGroup(unitTestParams, blockChain, new NioClientManager());
    else
        peerGroup = new PeerGroup(unitTestParams, blockChain, new BlockingClientManager());
    peerGroup.setPingIntervalMsec(0);  // Disable the pings as they just get in the way of most tests.
}
 

import com.google.bitcoin.net.BlockingClientManager; //导入依赖的package包/类
/**
 * <p>Creates a PeerGroup that accesses the network via the Tor network. The provided TorClient is used so you can
 * preconfigure it beforehand. It should not have been already started. You can just use "new TorClient()" if
 * you don't have any particular configuration requirements.</p>
 *
 * <p>Peer discovery is automatically configured to use DNS seeds resolved via a random selection of exit nodes.
 * If running on the Oracle JDK the unlimited strength jurisdiction checks will also be overridden,
 * as they no longer apply anyway and can cause startup failures due to the requirement for AES-256.</p>
 *
 * <p>The user does not need any additional software for this: it's all pure Java. As of April 2014 <b>this mode
 * is experimental</b>.</p>
 *
 * @throws java.util.concurrent.TimeoutException if Tor fails to start within 20 seconds.
 */
public static PeerGroup newWithTor(NetworkParameters params, @Nullable AbstractBlockChain chain, TorClient torClient) throws TimeoutException {
    checkNotNull(torClient);
    maybeDisableExportControls();
    BlockingClientManager manager = new BlockingClientManager(torClient.getSocketFactory());
    final int CONNECT_TIMEOUT_MSEC = TOR_TIMEOUT_SECONDS * 1000;
    manager.setConnectTimeoutMillis(CONNECT_TIMEOUT_MSEC);
    PeerGroup result = new PeerGroup(params, chain, manager, torClient);
    result.setConnectTimeoutMillis(CONNECT_TIMEOUT_MSEC);
    result.addPeerDiscovery(new TorDiscovery(params, torClient));
    return result;
}