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

Example 1 with TcpDnsResponseDecoder

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

the class TcpDnsClient method main.

public static void main(String[] args) throws Exception {
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {

            @Override
            protected void initChannel(SocketChannel ch) {
                ChannelPipeline p = ch.pipeline();
                p.addLast(new TcpDnsQueryEncoder()).addLast(new TcpDnsResponseDecoder()).addLast(new SimpleChannelInboundHandler<DefaultDnsResponse>() {

                    @Override
                    protected void channelRead0(ChannelHandlerContext ctx, DefaultDnsResponse msg) {
                        try {
                            handleQueryResp(msg);
                        } finally {
                            ctx.close();
                        }
                    }
                });
            }
        });
        final Channel ch = b.connect(DNS_SERVER_HOST, DNS_SERVER_PORT).sync().channel();
        int randomID = new Random().nextInt(60000 - 1000) + 1000;
        DnsQuery query = new DefaultDnsQuery(randomID, DnsOpCode.QUERY).setRecord(DnsSection.QUESTION, new DefaultDnsQuestion(QUERY_DOMAIN, DnsRecordType.A));
        ch.writeAndFlush(query).sync();
        boolean success = ch.closeFuture().await(10, TimeUnit.SECONDS);
        if (!success) {
            System.err.println("dns query timeout!");
            ch.close().sync();
        }
    } finally {
        group.shutdownGracefully();
    }
}

Example 2 with TcpDnsResponseDecoder

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

the class DoTClient method main.

public static void main(String[] args) throws Exception {
    EventLoopGroup group = new NioEventLoopGroup();
    try {
        final SslContext sslContext = SslContextBuilder.forClient().protocols("TLSv1.3", "TLSv1.2").build();
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {

            @Override
            protected void initChannel(SocketChannel ch) {
                ChannelPipeline p = ch.pipeline();
                p.addLast(sslContext.newHandler(ch.alloc(), DNS_SERVER_HOST, DNS_SERVER_PORT)).addLast(new TcpDnsQueryEncoder()).addLast(new TcpDnsResponseDecoder()).addLast(new SimpleChannelInboundHandler<DefaultDnsResponse>() {

                    @Override
                    protected void channelRead0(ChannelHandlerContext ctx, DefaultDnsResponse msg) {
                        try {
                            handleQueryResp(msg);
                        } finally {
                            ctx.close();
                        }
                    }
                });
            }
        });
        final Channel ch = b.connect(DNS_SERVER_HOST, DNS_SERVER_PORT).sync().channel();
        int randomID = new Random().nextInt(60000 - 1000) + 1000;
        DnsQuery query = new DefaultDnsQuery(randomID, DnsOpCode.QUERY).setRecord(DnsSection.QUESTION, new DefaultDnsQuestion(QUERY_DOMAIN, DnsRecordType.A));
        ch.writeAndFlush(query).sync();
        boolean success = ch.closeFuture().await(10, TimeUnit.SECONDS);
        if (!success) {
            System.err.println("dns query timeout!");
            ch.close().sync();
        }
    } finally {
        group.shutdownGracefully();
    }
}

Example 3 with TcpDnsResponseDecoder

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

the class TcpDnsServer method clientQuery.

// copy from TcpDnsClient.java
private static void clientQuery() throws Exception {
    NioEventLoopGroup group = new NioEventLoopGroup();
    try {
        Bootstrap b = new Bootstrap();
        b.group(group).channel(NioSocketChannel.class).handler(new ChannelInitializer<SocketChannel>() {

            @Override
            protected void initChannel(SocketChannel ch) {
                ch.pipeline().addLast(new TcpDnsQueryEncoder()).addLast(new TcpDnsResponseDecoder()).addLast(new SimpleChannelInboundHandler<DefaultDnsResponse>() {

                    @Override
                    protected void channelRead0(ChannelHandlerContext ctx, DefaultDnsResponse msg) {
                        try {
                            handleQueryResp(msg);
                        } finally {
                            ctx.close();
                        }
                    }
                });
            }
        });
        final Channel ch = b.connect(DNS_SERVER_HOST, DNS_SERVER_PORT).sync().channel();
        int randomID = new Random().nextInt(60000 - 1000) + 1000;
        DnsQuery query = new DefaultDnsQuery(randomID, DnsOpCode.QUERY).setRecord(DnsSection.QUESTION, new DefaultDnsQuestion(QUERY_DOMAIN, DnsRecordType.A));
        ch.writeAndFlush(query).sync();
        boolean success = ch.closeFuture().await(10, TimeUnit.SECONDS);
        if (!success) {
            System.err.println("dns query timeout!");
            ch.close().sync();
        }
    } finally {
        group.shutdownGracefully();
    }
}