Examples with DNSDaemon org.apache.tuweni.discovery.DNSDaemon used on opensource projects

Example 1 with DNSDaemon

use of org.apache.tuweni.discovery.DNSDaemon in project besu by hyperledger.

the class DefaultP2PNetwork method start.

@Override
public void start() {
    if (!started.compareAndSet(false, true)) {
        LOG.warn("Attempted to start an already started " + getClass().getSimpleName());
        return;
    }
    final String address = config.getDiscovery().getAdvertisedHost();
    final int configuredDiscoveryPort = config.getDiscovery().getBindPort();
    final int configuredRlpxPort = config.getRlpx().getBindPort();
    Optional.ofNullable(config.getDiscovery().getDNSDiscoveryURL()).ifPresent(disco -> {
        LOG.info("Starting DNS discovery with URL {}", disco);
        config.getDnsDiscoveryServerOverride().ifPresent(dnsServer -> LOG.info("Starting DNS discovery with DNS Server override {}", dnsServer));
        dnsDaemon = new DNSDaemon(disco, createDaemonListener(), 0L, 60000L, config.getDnsDiscoveryServerOverride().orElse(null));
        dnsDaemon.start();
    });
    final int listeningPort = rlpxAgent.start().join();
    final int discoveryPort = peerDiscoveryAgent.start((configuredDiscoveryPort == 0 && configuredRlpxPort == 0) ? listeningPort : configuredDiscoveryPort).join();
    final Consumer<? super NatManager> natAction = natManager -> {
        final UpnpNatManager upnpNatManager = (UpnpNatManager) natManager;
        upnpNatManager.requestPortForward(discoveryPort, NetworkProtocol.UDP, NatServiceType.DISCOVERY);
        upnpNatManager.requestPortForward(listeningPort, NetworkProtocol.TCP, NatServiceType.RLPX);
    };
    natService.ifNatEnvironment(NatMethod.UPNP, natAction);
    natService.ifNatEnvironment(NatMethod.UPNPP2PONLY, natAction);
    setLocalNode(address, listeningPort, discoveryPort);
    peerBondedObserverId = OptionalLong.of(peerDiscoveryAgent.observePeerBondedEvents(this::handlePeerBondedEvent));
    // Periodically check maintained connections
    final int checkMaintainedConnectionsSec = config.getCheckMaintainedConnectionsFrequencySec();
    peerConnectionScheduler.scheduleWithFixedDelay(this::checkMaintainedConnectionPeers, 2, checkMaintainedConnectionsSec, TimeUnit.SECONDS);
    // Periodically initiate outgoing connections to discovered peers
    final int checkConnectionsSec = config.getInitiateConnectionsFrequencySec();
    peerConnectionScheduler.scheduleWithFixedDelay(this::attemptPeerConnections, checkConnectionsSec, checkConnectionsSec, TimeUnit.SECONDS);
}