List of usage examples for io.netty.handler.codec.dns DnsRecordType AAAA
DnsRecordType AAAA
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From source file:com.linecorp.armeria.client.endpoint.dns.DnsAddressEndpointGroup.java
License:Apache License
private static List<DnsQuestion> newQuestions(String hostname, @Nullable ResolvedAddressTypes resolvedAddressTypes) { if (resolvedAddressTypes == null) { if (NetUtil.isIpV4StackPreferred()) { resolvedAddressTypes = ResolvedAddressTypes.IPV4_ONLY; } else {/*w w w . j a va 2s. c om*/ resolvedAddressTypes = ResolvedAddressTypes.IPV4_PREFERRED; } } final ImmutableList.Builder<DnsQuestion> builder = ImmutableList.builder(); switch (resolvedAddressTypes) { case IPV4_ONLY: case IPV4_PREFERRED: case IPV6_PREFERRED: builder.add(new DefaultDnsQuestion(hostname, DnsRecordType.A)); break; } switch (resolvedAddressTypes) { case IPV6_ONLY: case IPV4_PREFERRED: case IPV6_PREFERRED: builder.add(new DefaultDnsQuestion(hostname, DnsRecordType.AAAA)); break; } return builder.build(); }
From source file:com.linecorp.armeria.client.endpoint.dns.DnsAddressEndpointGroup.java
License:Apache License
@Override ImmutableSortedSet<Endpoint> onDnsRecords(List<DnsRecord> records, int ttl) throws Exception { final ImmutableSortedSet.Builder<Endpoint> builder = ImmutableSortedSet.naturalOrder(); final boolean hasLoopbackARecords = records.stream().filter(r -> r instanceof DnsRawRecord) .map(DnsRawRecord.class::cast).anyMatch( r -> r.type() == DnsRecordType.A && r.content().getByte(r.content().readerIndex()) == 127); for (DnsRecord r : records) { if (!(r instanceof DnsRawRecord)) { continue; }/*from w ww .jav a2 s . c om*/ final DnsRecordType type = r.type(); final ByteBuf content = ((ByteBufHolder) r).content(); final int contentLen = content.readableBytes(); // Skip invalid records. if (type == DnsRecordType.A) { if (contentLen != 4) { warnInvalidRecord(DnsRecordType.A, content); continue; } } else if (type == DnsRecordType.AAAA) { if (contentLen != 16) { warnInvalidRecord(DnsRecordType.AAAA, content); continue; } } else { continue; } // Convert the content into an IP address and then into an endpoint. final String ipAddr; final byte[] addrBytes = new byte[contentLen]; content.getBytes(content.readerIndex(), addrBytes); if (contentLen == 16) { // Convert some IPv6 addresses into IPv4 addresses to remove duplicate endpoints. if (addrBytes[0] == 0x00 && addrBytes[1] == 0x00 && addrBytes[2] == 0x00 && addrBytes[3] == 0x00 && addrBytes[4] == 0x00 && addrBytes[5] == 0x00 && addrBytes[6] == 0x00 && addrBytes[7] == 0x00 && addrBytes[8] == 0x00 && addrBytes[9] == 0x00) { if (addrBytes[10] == 0x00 && addrBytes[11] == 0x00) { if (addrBytes[12] == 0x00 && addrBytes[13] == 0x00 && addrBytes[14] == 0x00 && addrBytes[15] == 0x01) { // Loopback address (::1) if (hasLoopbackARecords) { // Contains an IPv4 loopback address already; skip. continue; } else { ipAddr = "::1"; } } else { // IPv4-compatible address. ipAddr = NetUtil.bytesToIpAddress(addrBytes, 12, 4); } } else if (addrBytes[10] == -1 && addrBytes[11] == -1) { // IPv4-mapped address. ipAddr = NetUtil.bytesToIpAddress(addrBytes, 12, 4); } else { ipAddr = NetUtil.bytesToIpAddress(addrBytes); } } else { ipAddr = NetUtil.bytesToIpAddress(addrBytes); } } else { ipAddr = NetUtil.bytesToIpAddress(addrBytes); } final Endpoint endpoint = port != 0 ? Endpoint.of(hostname, port) : Endpoint.of(hostname); builder.add(endpoint.withIpAddr(ipAddr)); } final ImmutableSortedSet<Endpoint> endpoints = builder.build(); if (logger().isDebugEnabled()) { logger().debug("{} Resolved: {} (TTL: {})", logPrefix(), endpoints.stream().map(Endpoint::ipAddr).collect(Collectors.joining(", ")), ttl); } return endpoints; }
From source file:io.vertx.core.dns.impl.DnsClientImpl.java
License:Open Source License
@Override public DnsClient lookup6(String name, Handler<AsyncResult<String>> handler) { lookupSingle(name, handler, DnsRecordType.AAAA); return this; }
From source file:io.vertx.core.dns.impl.DnsClientImpl.java
License:Open Source License
@Override public DnsClient lookup(String name, Handler<AsyncResult<String>> handler) { lookupSingle(name, handler, DnsRecordType.A, DnsRecordType.AAAA); return this; }
From source file:io.vertx.core.dns.impl.DnsClientImpl.java
License:Open Source License
@Override public DnsClient resolveAAAA(String name, Handler<AsyncResult<List<String>>> handler) { lookupList(name, handler, DnsRecordType.AAAA); return this; }
From source file:io.vertx.core.dns.impl.fix.DnsNameResolverContext.java
License:Apache License
void resolve() { InetSocketAddress nameServerAddrToTry = nameServerAddrs.next(); for (InternetProtocolFamily f : resolveAddressTypes) { final DnsRecordType type; switch (f) { case IPv4: type = DnsRecordType.A;/*w ww . ja v a2 s. c o m*/ break; case IPv6: type = DnsRecordType.AAAA; break; default: throw new Error(); } query(nameServerAddrToTry, new DefaultDnsQuestion(hostname, type)); } }
From source file:io.vertx.core.dns.impl.fix.DnsNameResolverContext.java
License:Apache License
void onResponse(final DnsQuestion question, AddressedEnvelope<DnsResponse, InetSocketAddress> envelope) { try {//w ww. ja v a2 s . c o m final DnsResponse res = envelope.content(); final DnsResponseCode code = res.code(); if (code == DnsResponseCode.NOERROR) { final DnsRecordType type = question.type(); if (type == DnsRecordType.A || type == DnsRecordType.AAAA) { onResponseAorAAAA(type, question, envelope); } else if (type == DnsRecordType.CNAME) { onResponseCNAME(question, envelope); } return; } if (traceEnabled) { addTrace(envelope.sender(), "response code: " + code + " with " + res.count(DnsSection.ANSWER) + " answer(s) and " + res.count(DnsSection.AUTHORITY) + " authority resource(s)"); } // Retry with the next server if the server did not tell us that the domain does not exist. if (code != DnsResponseCode.NXDOMAIN) { query(nameServerAddrs.next(), question); } } finally { ReferenceCountUtil.safeRelease(envelope); } }
From source file:io.vertx.core.dns.impl.fix.DnsNameResolverContext.java
License:Apache License
private void onResponseAorAAAA(DnsRecordType qType, DnsQuestion question, AddressedEnvelope<DnsResponse, InetSocketAddress> envelope) { // We often get a bunch of CNAMES as well when we asked for A/AAAA. final DnsResponse response = envelope.content(); final Map<String, String> cnames = buildAliasMap(response); final int answerCount = response.count(DnsSection.ANSWER); boolean found = false; for (int i = 0; i < answerCount; i++) { final DnsRecord r = response.recordAt(DnsSection.ANSWER, i); final DnsRecordType type = r.type(); if (type != DnsRecordType.A && type != DnsRecordType.AAAA) { continue; }/*from ww w . j a v a2s .com*/ final String qName = question.name().toLowerCase(Locale.US); final String rName = r.name().toLowerCase(Locale.US); // Make sure the record is for the questioned domain. if (!rName.equals(qName)) { // Even if the record's name is not exactly same, it might be an alias defined in the CNAME records. String resolved = qName; do { resolved = cnames.get(resolved); if (rName.equals(resolved)) { break; } } while (resolved != null); if (resolved == null) { continue; } } if (!(r instanceof DnsRawRecord)) { continue; } final ByteBuf content = ((ByteBufHolder) r).content(); final int contentLen = content.readableBytes(); if (contentLen != INADDRSZ4 && contentLen != INADDRSZ6) { continue; } final byte[] addrBytes = new byte[contentLen]; content.getBytes(content.readerIndex(), addrBytes); final InetAddress resolved; try { resolved = InetAddress.getByAddress(hostname, addrBytes); } catch (UnknownHostException e) { // Should never reach here. throw new Error(e); } if (resolvedEntries == null) { resolvedEntries = new ArrayList<DnsCacheEntry>(8); } final DnsCacheEntry e = new DnsCacheEntry(hostname, resolved); resolveCache.cache(hostname, resolved, r.timeToLive(), parent.ch.eventLoop()); resolvedEntries.add(e); found = true; // Note that we do not break from the loop here, so we decode/cache all A/AAAA records. } if (found) { return; } if (traceEnabled) { addTrace(envelope.sender(), "no matching " + qType + " record found"); } // We aked for A/AAAA but we got only CNAME. if (!cnames.isEmpty()) { onResponseCNAME(question, envelope, cnames, false); } }
From source file:io.vertx.core.dns.impl.fix.DnsNameResolverContext.java
License:Apache License
private void followCname(InetSocketAddress nameServerAddr, String name, String cname) { if (traceEnabled) { if (trace == null) { trace = new StringBuilder(128); }/* w ww . j a va 2s.c o m*/ trace.append(StringUtil.NEWLINE); trace.append("\tfrom "); trace.append(nameServerAddr); trace.append(": "); trace.append(name); trace.append(" CNAME "); trace.append(cname); } final InetSocketAddress nextAddr = nameServerAddrs.next(); query(nextAddr, new DefaultDnsQuestion(cname, DnsRecordType.A)); query(nextAddr, new DefaultDnsQuestion(cname, DnsRecordType.AAAA)); }