Examples with Lookup org.xbill.DNS.Lookup used on opensource projects

Example 31 with Lookup

use of org.xbill.DNS.Lookup in project Smack by igniterealtime.

the class DNSJavaResolver method lookupSrvRecords0.

@Override
protected List<SRV> lookupSrvRecords0(DnsName name, List<RemoteConnectionEndpointLookupFailure> lookupFailures, DnssecMode dnssecMode) {
    Lookup lookup;
    try {
        lookup = new Lookup(name.ace, Type.SRV);
    } catch (TextParseException e) {
        RemoteConnectionEndpointLookupFailure failure = new RemoteConnectionEndpointLookupFailure.DnsLookupFailure(name, e);
        lookupFailures.add(failure);
        return null;
    }
    Record[] recs = lookup.run();
    if (recs == null) {
        // TODO: When does this happen? Do we want/need to record a lookup failure?
        return null;
    }
    List<SRV> res = new ArrayList<>();
    for (Record record : recs) {
        org.xbill.DNS.SRVRecord srvRecord = (org.xbill.DNS.SRVRecord) record;
        if (srvRecord != null && srvRecord.getTarget() != null) {
            DnsName host = DnsName.from(srvRecord.getTarget().toString());
            int port = srvRecord.getPort();
            int priority = srvRecord.getPriority();
            int weight = srvRecord.getWeight();
            SRV r = new SRV(priority, weight, port, host);
            res.add(r);
        }
    }
    return res;
}

Example 32 with Lookup

use of org.xbill.DNS.Lookup in project jmeter by apache.

the class DNSCacheManager method customRequestLookup.

private InetAddress[] customRequestLookup(String host) throws UnknownHostException {
    InetAddress[] addresses = null;
    try {
        Lookup lookup = new Lookup(host, Type.A);
        lookup.setCache(lookupCache);
        if (timeoutMs > 0) {
            resolver.setTimeout(timeoutMs / 1000, timeoutMs % 1000);
        }
        lookup.setResolver(resolver);
        Record[] records = lookup.run();
        if (records == null || records.length == 0) {
            throw new UnknownHostException("Failed to resolve host name: " + host);
        }
        addresses = new InetAddress[records.length];
        for (int i = 0; i < records.length; i++) {
            addresses[i] = ((ARecord) records[i]).getAddress();
        }
    } catch (TextParseException tpe) {
        // NOSONAR Exception handled
        log.debug("Failed to create Lookup object for host:{}, error message:{}", host, tpe.toString());
    }
    return addresses;
}

Example 33 with Lookup

use of org.xbill.DNS.Lookup in project Signal-Android by WhisperSystems.

the class CustomDns method lookup.

@Override
@NonNull
public List<InetAddress> lookup(@NonNull String hostname) throws UnknownHostException {
    Resolver resolver = new SimpleResolver(dnsHostname);
    Lookup lookup = doLookup(hostname);
    lookup.setResolver(resolver);
    Record[] records = lookup.run();
    if (records != null) {
        List<InetAddress> ipv4Addresses = Stream.of(records).filter(r -> r.getType() == Type.A).map(r -> (ARecord) r).map(ARecord::getAddress).toList();
        if (ipv4Addresses.size() > 0) {
            return ipv4Addresses;
        }
    }
    throw new UnknownHostException(hostname);
}