Examples with DNSMessage org.minidns.dnsmessage.DNSMessage used on opensource projects

Example 1 with DNSMessage

use of org.minidns.dnsmessage.DNSMessage in project minidns by MiniDNS.

the class AbstractDNSClient method query.

public final DNSMessage query(DNSMessage requestMessage, InetAddress address, int port) throws IOException {
    // See if we have the answer to this question already cached
    DNSMessage responseMessage = (cache == null) ? null : cache.get(requestMessage);
    if (responseMessage != null) {
        return responseMessage;
    }
    final Question q = requestMessage.getQuestion();
    final Level TRACE_LOG_LEVEL = Level.FINE;
    LOGGER.log(TRACE_LOG_LEVEL, "Asking {0} on {1} for {2} with:\n{3}", new Object[] { address, port, q, requestMessage });
    try {
        responseMessage = dataSource.query(requestMessage, address, port);
    } catch (IOException e) {
        LOGGER.log(TRACE_LOG_LEVEL, "IOException {0} on {1} while resolving {2}: {3}", new Object[] { address, port, q, e });
        throw e;
    }
    if (responseMessage != null) {
        LOGGER.log(TRACE_LOG_LEVEL, "Response from {0} on {1} for {2}:\n{3}", new Object[] { address, port, q, responseMessage });
    } else {
        // TODO When should this ever happen?
        LOGGER.log(Level.SEVERE, "NULL response from " + address + " on " + port + " for " + q);
    }
    if (responseMessage == null)
        return null;
    onResponseCallback.onResponse(requestMessage, responseMessage);
    return responseMessage;
}

Example 2 with DNSMessage

use of org.minidns.dnsmessage.DNSMessage in project minidns by MiniDNS.

the class AbstractDNSClient method queryAsync.

public final MiniDnsFuture<DNSMessage, IOException> queryAsync(DNSMessage requestMessage, InetAddress address, int port) {
    // See if we have the answer to this question already cached
    DNSMessage responseMessage = (cache == null) ? null : cache.get(requestMessage);
    if (responseMessage != null) {
        return MiniDnsFuture.from(responseMessage);
    }
    final Question q = requestMessage.getQuestion();
    final Level TRACE_LOG_LEVEL = Level.FINE;
    LOGGER.log(TRACE_LOG_LEVEL, "Asynchronusly asking {0} on {1} for {2} with:\n{3}", new Object[] { address, port, q, requestMessage });
    return dataSource.queryAsync(requestMessage, address, port, onResponseCallback);
}

Example 3 with DNSMessage

use of org.minidns.dnsmessage.DNSMessage in project minidns by MiniDNS.

the class AbstractDNSClient method getQueryFor.

protected DNSMessage getQueryFor(Question q) {
    DNSMessage.Builder messageBuilder = buildMessage(q);
    DNSMessage query = messageBuilder.build();
    return query;
}

Example 4 with DNSMessage

use of org.minidns.dnsmessage.DNSMessage in project minidns by MiniDNS.

the class AbstractDNSClient method getCachedRecordsFor.

private <D extends Data> Set<D> getCachedRecordsFor(DNSName dnsName, TYPE type) {
    Question dnsNameNs = new Question(dnsName, type);
    DNSMessage queryDnsNameNs = getQueryFor(dnsNameNs);
    DNSMessage cachedResult = cache.get(queryDnsNameNs);
    if (cachedResult == null)
        return Collections.emptySet();
    return cachedResult.getAnswersFor(dnsNameNs);
}

Example 5 with DNSMessage

use of org.minidns.dnsmessage.DNSMessage in project minidns by MiniDNS.

the class DNSClient method queryAsync.

@Override
protected MiniDnsFuture<DNSMessage, IOException> queryAsync(DNSMessage.Builder queryBuilder) {
    DNSMessage q = newQuestion(queryBuilder).build();
    // While this query method does in fact re-use query(Question, String)
    // we still do a cache lookup here in order to avoid unnecessary
    // findDNS()calls, which are expensive on Android. Note that we do not
    // put the results back into the Cache, as this is already done by
    // query(Question, String).
    DNSMessage responseMessage = (cache == null) ? null : cache.get(q);
    if (responseMessage != null) {
        return MiniDnsFuture.from(responseMessage);
    }
    final List<InetAddress> dnsServerAddresses = getServerAddresses();
    final InternalMiniDnsFuture<DNSMessage, IOException> future = new InternalMiniDnsFuture<>();
    final List<IOException> exceptions = Collections.synchronizedList(new ArrayList<IOException>(dnsServerAddresses.size()));
    // Filter loop.
    Iterator<InetAddress> it = dnsServerAddresses.iterator();
    while (it.hasNext()) {
        InetAddress dns = it.next();
        if (nonRaServers.contains(dns)) {
            it.remove();
            LOGGER.finer("Skipping " + dns + " because it was marked as \"recursion not available\"");
            continue;
        }
    }
    List<MiniDnsFuture<DNSMessage, IOException>> futures = new ArrayList<>(dnsServerAddresses.size());
    // "Main" loop.
    for (InetAddress dns : dnsServerAddresses) {
        if (future.isDone()) {
            for (MiniDnsFuture<DNSMessage, IOException> futureToCancel : futures) {
                futureToCancel.cancel(true);
            }
            break;
        }
        MiniDnsFuture<DNSMessage, IOException> f = queryAsync(q, dns);
        f.onSuccess(new SuccessCallback<DNSMessage>() {

            @Override
            public void onSuccess(DNSMessage result) {
                future.setResult(result);
            }
        });
        f.onError(new ExceptionCallback<IOException>() {

            @Override
            public void processException(IOException exception) {
                exceptions.add(exception);
                if (exceptions.size() == dnsServerAddresses.size()) {
                    future.setException(MultipleIoException.toIOException(exceptions));
                }
            }
        });
        futures.add(f);
    }
    return future;
}