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

Example 6 with DnsMessage

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

the class DNSDataSource method queryAsync.

public MiniDnsFuture<DNSMessage, IOException> queryAsync(DNSMessage message, InetAddress address, int port, OnResponseCallback onResponseCallback) {
    InternalMiniDnsFuture<DNSMessage, IOException> future = new InternalMiniDnsFuture<>();
    DNSMessage result;
    try {
        result = query(message, address, port);
    } catch (IOException e) {
        future.setException(e);
        return future;
    }
    future.setResult(result);
    return future;
}

Example 7 with DnsMessage

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

the class NetworkDataSource method query.

@Override
public DNSMessage query(DNSMessage message, InetAddress address, int port) throws IOException {
    List<IOException> ioExceptions = new ArrayList<>(2);
    DNSMessage dnsMessage = null;
    final QueryMode queryMode = getQueryMode();
    boolean doUdpFirst;
    switch(queryMode) {
        case dontCare:
        case udpTcp:
            doUdpFirst = true;
            break;
        case tcp:
            doUdpFirst = false;
            break;
        default:
            throw new IllegalStateException("Unsupported query mode: " + queryMode);
    }
    if (doUdpFirst) {
        try {
            dnsMessage = queryUdp(message, address, port);
        } catch (IOException e) {
            ioExceptions.add(e);
        }
        if (dnsMessage != null && !dnsMessage.truncated) {
            return dnsMessage;
        }
        assert (dnsMessage == null || dnsMessage.truncated || ioExceptions.size() == 1);
        LOGGER.log(Level.FINE, "Fallback to TCP because {0}", new Object[] { dnsMessage != null ? "response is truncated" : ioExceptions.get(0) });
    }
    try {
        dnsMessage = queryTcp(message, address, port);
    } catch (IOException e) {
        ioExceptions.add(e);
        MultipleIoException.throwIfRequired(ioExceptions);
    }
    return dnsMessage;
}

Example 8 with DnsMessage

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

the class NetworkDataSource method queryTcp.

protected DNSMessage queryTcp(DNSMessage message, InetAddress address, int port) throws IOException {
    // TODO Use a try-with-resource statement here once miniDNS minimum
    // required Android API level is >= 19
    Socket socket = null;
    try {
        socket = createSocket();
        SocketAddress socketAddress = new InetSocketAddress(address, port);
        socket.connect(socketAddress, timeout);
        socket.setSoTimeout(timeout);
        DataOutputStream dos = new DataOutputStream(socket.getOutputStream());
        message.writeTo(dos);
        dos.flush();
        DataInputStream dis = new DataInputStream(socket.getInputStream());
        int length = dis.readUnsignedShort();
        byte[] data = new byte[length];
        int read = 0;
        while (read < length) {
            read += dis.read(data, read, length - read);
        }
        DNSMessage dnsMessage = new DNSMessage(data);
        if (dnsMessage.id != message.id) {
            throw new MiniDNSException.IdMismatch(message, dnsMessage);
        }
        return dnsMessage;
    } finally {
        if (socket != null) {
            socket.close();
        }
    }
}

Example 9 with DnsMessage

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

the class NetworkDataSourceWithAccounting method query.

@Override
public DNSMessage query(DNSMessage message, InetAddress address, int port) throws IOException {
    DNSMessage response;
    try {
        response = super.query(message, address, port);
    } catch (IOException e) {
        failedQueries.incrementAndGet();
        throw e;
    }
    successfulQueries.incrementAndGet();
    responseSize.addAndGet(response.toArray().length);
    return response;
}

Example 10 with DnsMessage

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

the class DNSClientTest method testSingleRecordQuery.

@SuppressWarnings("unchecked")
@Test
public void testSingleRecordQuery() throws IOException {
    DNSClient client = new DNSClient(new LRUCache(0));
    applyStubRecords(client, record("www.example.com", a("127.0.0.1")));
    DNSMessage response = client.query("www.example.com", TYPE.A);
    assertNotNull(response);
    assertEquals(1, response.answerSection.size());
    assertEquals(TYPE.A, response.answerSection.get(0).type);
    assertArrayEquals(new byte[] { 127, 0, 0, 1 }, ((A) response.answerSection.get(0).payloadData).getIp());
    response = client.query("www2.example.com", TYPE.A);
    assertNull(response);
    response = client.query("www.example.com", TYPE.CNAME);
    assertNull(response);
}