org.xbill.DNS.Lookup类的使用及代码示例

x33g5p2x  于2022-01-23 转载在 其他  
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本文整理了Java中org.xbill.DNS.Lookup类的一些代码示例，展示了Lookup类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Lookup类的具体详情如下：
包路径：org.xbill.DNS.Lookup
类名称：Lookup

Lookup介绍

暂无

代码示例

代码示例来源：origin: igniterealtime/Smack

@Override
protected List<SRVRecord> lookupSRVRecords0(DnsName name, List<HostAddress> failedAddresses, DnssecMode dnssecMode) {
  List<SRVRecord> res = new ArrayList<>();
  Lookup lookup;
  try {
    lookup = new Lookup(name.ace, Type.SRV);
  }
  catch (TextParseException e) {
    throw new IllegalStateException(e);
  }
  Record[] recs = lookup.run();
  if (recs == null)
    return res;
  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();
      List<InetAddress> hostAddresses = lookupHostAddress0(host, failedAddresses, dnssecMode);
      if (shouldContinue(name, host, hostAddresses)) {
        continue;
      }
      SRVRecord r = new SRVRecord(host, port, priority, weight, hostAddresses);
      res.add(r);
    }
  }
  return res;
}

代码示例来源：origin: yuliskov/SmartYouTubeTV

public List<InetAddress> resolve(String host) {
  List<InetAddress> hostIPs = new ArrayList<>();
  try {
    Lookup lookup = new Lookup(host, Type.A);
    lookup.setResolver(resolver);
    Record[] records = lookup.run();
    if (records == null) {
      return hostIPs;
    }
    for (Record record : records) {
      hostIPs.add(((ARecord) record).getAddress());
    }
  } catch (TextParseException ex) {
    Log.e(TAG, ex.getMessage(), ex);
    throw new IllegalStateException(ex);
  }
  return hostIPs;
}

代码示例来源：origin: JZ-Darkal/AndroidHttpCapture

Lookup lookup;
try {
  lookup = new Lookup(host, type, DClass.IN);
} catch (TextParseException e) {
  return Collections.emptyList();
lookup.setCache(cache);
  records = lookup.run();
  retryCount++;
} while (lookup.getResult() == Lookup.TRY_AGAIN && retryCount < DNS_NETWORK_FAILURE_RETRY_COUNT);

代码示例来源：origin: org.apache.james.jdkim/apache-jdkim-library

/**
 * @see org.apache.james.jdkim.api.PublicKeyRecordRetriever#getRecords(java.lang.CharSequence, java.lang.CharSequence, java.lang.CharSequence)
 */
public List<String> getRecords(CharSequence methodAndOptions,
    CharSequence selector, CharSequence token)
    throws TempFailException, PermFailException {
  if (!"dns/txt".equals(methodAndOptions))
    throw new PermFailException("Only dns/txt is supported: "
        + methodAndOptions + " options unsupported.");
  try {
    Lookup query = new Lookup(selector + "._domainkey." + token,
        Type.TXT);
    query.setResolver(resolver);
    Record[] rr = query.run();
    int queryResult = query.getResult();
    if (queryResult == Lookup.TRY_AGAIN) {
      throw new TempFailException(query.getErrorString());
    }
    List<String> records = convertRecordsToList(rr);
    return records;
  } catch (TextParseException e) {
    // TODO log
    return null;
  }
}

代码示例来源：origin: OpenNMS/opennms

private static boolean resolve(final Name name,
                  final Resolver resolver,
                  final int type) {
    final Lookup lookup = new Lookup(name, type);
    // NMS-9238: Do not use a cache when looking up the record,
    // that kind of defeats the purpose of this monitor :)
    lookup.setCache(null);
    lookup.setResolver(resolver);

    final Record[] records = lookup.run();

    if (records == null) {
      return false;
    }

    return Arrays.stream(records)
           .filter(r -> r.getType() == type)
           .count() > 0;
  }
}

代码示例来源：origin: org.apache.james/james-server-dnsservice-dnsjava

Lookup l = new Lookup(namestr, type);
l.setCache(cache);
l.setResolver(resolver);
l.setCredibility(dnsCredibility);
l.setSearchPath(searchPaths);
Record[] r = l.run();
  if (l.getResult() == Lookup.TRY_AGAIN) {
    throw new TemporaryResolutionException("DNSService is temporary not reachable");
  } else {

代码示例来源：origin: org.mobicents.javax.sip/mobicents-jain-sip-ext

public List<Record> performSRVLookup(String replacement) {
  if(logger.isDebugEnabled()) {
    logger.debug("doing SRV lookup for replacement " + replacement);
  }
  Record[] srvRecords = null;
  try {
    Lookup lookup = new Lookup(replacement, Type.SRV);
    lookup.getDefaultResolver().setTimeout(dnsTimeout);
    lookup.getDefaultResolver().setTimeout(dnsTimeout, 0);
    srvRecords = lookup.run();
  } catch (TextParseException e) {
    logger.error("Impossible to parse the parameters for dns lookup",e);
  }
  if(srvRecords != null && srvRecords.length > 0) {
    return Arrays.asList(srvRecords);	
  }
  return new ArrayList<Record>(0);
}

代码示例来源：origin: net.sf.dnsjava-osgi/dnsjava-osgi

Lookup l = new Lookup(zname, Type.NS);
Record [] ns = l.run();
if (ns == null) {
  System.out.println("failed to look up NS record: " +
        l.getErrorString());
  System.exit(1);

代码示例来源：origin: dnsjava/dnsjava

private static Record []
lookupHostName(String name, boolean all) throws UnknownHostException {
  try {
    Lookup lookup = new Lookup(name, Type.A);
    Record [] a = lookup.run();
    if (a == null) {
      if (lookup.getResult() == Lookup.TYPE_NOT_FOUND) {
        Record [] aaaa = new Lookup(name, Type.AAAA).run();
        if (aaaa != null)
          return aaaa;
      }
      throw new UnknownHostException("unknown host");
    }
    if (! all)
      return a;
    Record [] aaaa = new Lookup(name, Type.AAAA).run();
    if (aaaa == null)
      return a;
    Record [] merged = new Record[a.length + aaaa.length];
    System.arraycopy(a, 0, merged, 0, a.length);
    System.arraycopy(aaaa, 0, merged, a.length, aaaa.length);
    return merged;
  }
  catch (TextParseException e) {
    throw new UnknownHostException("invalid name");
  }
}

代码示例来源：origin: org.echocat.jomon.net/common

@Nonnull
protected Lookup createLookupFor(@Nonnull String query, @Nonnegative int type) {
  final Lookup lookup;
  try {
    lookup = new Lookup(query, type);
  } catch (final TextParseException e) {
    throw new IllegalArgumentException("Could not parse query: " + query, e);
  }
  final Resolver resolver = _resolver;
  lookup.setResolver(resolver != null ? resolver : getDefaultResolver());
  lookup.setCache(null);
  return lookup;
}

代码示例来源：origin: com.spotify/dns

@Override
public List<LookupResult> resolve(final String fqdn) {
 Lookup lookup = lookupFactory.forName(fqdn);
 Record[] queryResult = lookup.run();
 switch (lookup.getResult()) {
  case Lookup.SUCCESSFUL:
   return toLookupResults(queryResult);
  case Lookup.HOST_NOT_FOUND:
   // fallthrough
  case Lookup.TYPE_NOT_FOUND:
   LOG.warn("No results returned for query '{}'; result from XBill: {} - {}",
     fqdn, lookup.getResult(), lookup.getErrorString());
   return ImmutableList.of();
  default:
   throw new DnsException(
     String.format("Lookup of '%s' failed with code: %d - %s ",
       fqdn, lookup.getResult(), lookup.getErrorString()));
 }
}

代码示例来源：origin: com.helger/ph-httpclient

@Nonnull
protected Lookup createLookup (@Nonnull final String sHost) throws TextParseException
{
 final Lookup aDNSLookup = new Lookup (sHost, Type.ANY);
 try
 {
  aDNSLookup.setResolver (new SimpleResolver ());
 }
 catch (final UnknownHostException ex)
 {
  // Shit happens - no special resolver needed
 }
 // No cache!
 aDNSLookup.setCache (null);
 return aDNSLookup;
}

代码示例来源：origin: org.nhind/agent

@Override
public Record[] run() {
  return lu.run();
}

代码示例来源：origin: spotify/dns-java

@Override
 public Lookup forName(String fqdn) {
  try {
   final Lookup lookup = new Lookup(fqdn, Type.SRV, DClass.IN);
   if (resolver != null) {
    lookup.setResolver(resolver);
   }
   return lookup;
  } catch (TextParseException e) {
   throw new DnsException("unable to create lookup for name: " + fqdn, e);
  }
 }
}

代码示例来源：origin: org.apache.james/james-server-dnsservice-dnsjava

@Before
public void setUp() throws Exception {
  dnsServer = new TestableDNSServer();
  DefaultConfigurationBuilder db = new DefaultConfigurationBuilder();
  db.load(new ByteArrayInputStream(DNS_SERVER_CONFIG));
  dnsServer.configure(db);
  dnsServer.init();
  defaultCache = Lookup.getDefaultCache(DClass.IN);
  defaultResolver = Lookup.getDefaultResolver();
  defaultSearchPaths = Lookup.getDefaultSearchPath();
  Lookup.setDefaultCache(null, DClass.IN);
  Lookup.setDefaultResolver(null);
  Lookup.setDefaultSearchPath(new Name[]{});
  dnsServer.setResolver(null);
  mockedCache = mock(Cache.class);
}

代码示例来源：origin: org.nhind/agent

public LookupAdapter(Name name, int type){
  lu = new org.xbill.DNS.Lookup(name, type);
}

代码示例来源：origin: dnsjava/dnsjava

this.dclass = dclass;
synchronized (Lookup.class) {
  this.resolver = getDefaultResolver();
  this.searchPath = getDefaultSearchPath();
  this.cache = getDefaultCache(dclass);

代码示例来源：origin: dnsjava/dnsjava

public static void
printAnswer(String name, Lookup lookup) {
  System.out.print(name + ":");
  int result = lookup.getResult();
  if (result != Lookup.SUCCESSFUL)
    System.out.print(" " + lookup.getErrorString());
  System.out.println();
  Name [] aliases = lookup.getAliases();
  if (aliases.length > 0) {
    System.out.print("# aliases: ");
    for (int i = 0; i < aliases.length; i++) {
      System.out.print(aliases[i]);
      if (i < aliases.length - 1)
        System.out.print(" ");
    }
    System.out.println();
  }
  if (lookup.getResult() == Lookup.SUCCESSFUL) {
    Record [] answers = lookup.getAnswers();
    for (int i = 0; i < answers.length; i++)
      System.out.println(answers[i]);
  }
}

代码示例来源：origin: org.apache.james.jspf/apache-jspf-resolver

/**
 * Default Constructor.
 * Uses the DNSJava static DefaultResolver
 */
public DNSServiceXBillImpl(Logger logger) {
  this(logger, Lookup.getDefaultResolver());
}

代码示例来源：origin: org.echocat.jomon.net/common

protected void checkResult(@Nonnull String query, @Nonnull Lookup lookup) throws NoSuchSrvRecordException, UnknownHostException, SocketException {
  final int result = lookup.getResult();
  if (result == HOST_NOT_FOUND) {
    throw new NoSuchSrvRecordException("Could not find srv entry for query '" + query + "' on remote " + toStringOfResolver(lookup) + ".");
  } else if (result == TYPE_NOT_FOUND) {
    throw new UnknownHostException("Could not find the host that should contain the srv entry for query '" + query + "' on remote " + toStringOfResolver(lookup) + ".");
  } else if (result == TRY_AGAIN) {
    throw new ServiceTemporaryUnavailableException("Could not get information from remote " + toStringOfResolver(lookup) + ".");
  } else if (result != 0) {
    throw new RuntimeException("Could not get information from remote " + toStringOfResolver(lookup) + ". Got: " + lookup.getErrorString());
  }
}

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