Examples with DnsQuestion io.netty.handler.codec.dns.DnsQuestion used on opensource projects

Example 6 with DnsQuestion

use of io.netty.handler.codec.dns.DnsQuestion in project netty by netty.

the class DoTClient method handleQueryResp.

private static void handleQueryResp(DefaultDnsResponse msg) {
    if (msg.count(DnsSection.QUESTION) > 0) {
        DnsQuestion question = msg.recordAt(DnsSection.QUESTION, 0);
        System.out.printf("name: %s%n", question.name());
    }
    for (int i = 0, count = msg.count(DnsSection.ANSWER); i < count; i++) {
        DnsRecord record = msg.recordAt(DnsSection.ANSWER, i);
        if (record.type() == DnsRecordType.A) {
            // just print the IP after query
            DnsRawRecord raw = (DnsRawRecord) record;
            System.out.println(NetUtil.bytesToIpAddress(ByteBufUtil.getBytes(raw.content())));
        }
    }
}

Example 7 with DnsQuestion

use of io.netty.handler.codec.dns.DnsQuestion in project netty by netty.

the class TcpDnsServer method main.

public static void main(String[] args) throws Exception {
    ServerBootstrap bootstrap = new ServerBootstrap().group(new NioEventLoopGroup(1), new NioEventLoopGroup()).channel(NioServerSocketChannel.class).handler(new LoggingHandler(LogLevel.INFO)).childHandler(new ChannelInitializer<Channel>() {

        @Override
        protected void initChannel(Channel ch) throws Exception {
            ch.pipeline().addLast(new TcpDnsQueryDecoder(), new TcpDnsResponseEncoder(), new SimpleChannelInboundHandler<DnsQuery>() {

                @Override
                protected void channelRead0(ChannelHandlerContext ctx, DnsQuery msg) throws Exception {
                    DnsQuestion question = msg.recordAt(DnsSection.QUESTION);
                    System.out.println("Query domain: " + question);
                    // always return 192.168.1.1
                    ctx.writeAndFlush(newResponse(msg, question, 600, QUERY_RESULT));
                }

                private DefaultDnsResponse newResponse(DnsQuery query, DnsQuestion question, long ttl, byte[]... addresses) {
                    DefaultDnsResponse response = new DefaultDnsResponse(query.id());
                    response.addRecord(DnsSection.QUESTION, question);
                    for (byte[] address : addresses) {
                        DefaultDnsRawRecord queryAnswer = new DefaultDnsRawRecord(question.name(), DnsRecordType.A, ttl, Unpooled.wrappedBuffer(address));
                        response.addRecord(DnsSection.ANSWER, queryAnswer);
                    }
                    return response;
                }
            });
        }
    });
    final Channel channel = bootstrap.bind(DNS_SERVER_PORT).channel();
    Executors.newSingleThreadScheduledExecutor().schedule(new Runnable() {

        @Override
        public void run() {
            try {
                clientQuery();
                channel.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }, 1000, TimeUnit.MILLISECONDS);
    channel.closeFuture().sync();
}

Example 8 with DnsQuestion

use of io.netty.handler.codec.dns.DnsQuestion in project netty by netty.

the class TcpDnsClient method handleQueryResp.

private static void handleQueryResp(DefaultDnsResponse msg) {
    if (msg.count(DnsSection.QUESTION) > 0) {
        DnsQuestion question = msg.recordAt(DnsSection.QUESTION, 0);
        System.out.printf("name: %s%n", question.name());
    }
    for (int i = 0, count = msg.count(DnsSection.ANSWER); i < count; i++) {
        DnsRecord record = msg.recordAt(DnsSection.ANSWER, i);
        if (record.type() == DnsRecordType.A) {
            // just print the IP after query
            DnsRawRecord raw = (DnsRawRecord) record;
            System.out.println(NetUtil.bytesToIpAddress(ByteBufUtil.getBytes(raw.content())));
        }
    }
}

Example 9 with DnsQuestion

use of io.netty.handler.codec.dns.DnsQuestion in project netty by netty.

the class DnsClient method handleQueryResp.

private static void handleQueryResp(DatagramDnsResponse msg) {
    if (msg.count(DnsSection.QUESTION) > 0) {
        DnsQuestion question = msg.recordAt(DnsSection.QUESTION, 0);
        System.out.printf("name: %s%n", question.name());
    }
    for (int i = 0, count = msg.count(DnsSection.ANSWER); i < count; i++) {
        DnsRecord record = msg.recordAt(DnsSection.ANSWER, i);
        if (record.type() == DnsRecordType.A) {
            // just print the IP after query
            DnsRawRecord raw = (DnsRawRecord) record;
            System.out.println(NetUtil.bytesToIpAddress(ByteBufUtil.getBytes(raw.content())));
        }
    }
}

Example 10 with DnsQuestion

use of io.netty.handler.codec.dns.DnsQuestion in project netty by netty.

the class DnsNameResolverContext method query.

private boolean query(String hostname, DnsRecordType type, DnsServerAddressStream nextAddr, Promise<T> promise) {
    final DnsQuestion question;
    try {
        question = new DefaultDnsQuestion(hostname, type);
    } catch (IllegalArgumentException e) {
        // java.net.IDN.toASCII(...) may throw an IllegalArgumentException if it fails to parse the hostname
        promise.tryFailure(e);
        return false;
    }
    query(nextAddr, question, promise);
    return true;
}