Examples with SystemDefaultDnsResolver org.apache.http.impl.conn.SystemDefaultDnsResolver used on opensource projects

Example 1 with SystemDefaultDnsResolver

use of org.apache.http.impl.conn.SystemDefaultDnsResolver in project gateway-dubbox by zhuzhong.

the class OpenApiHttpAsynClientServiceImpl method initHttpAsynClient.

private void initHttpAsynClient() throws IOReactorException {
    // Use custom message parser / writer to customize the way HTTP
    // messages are parsed from and written out to the data stream.
    NHttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory() {

        @Override
        public NHttpMessageParser<HttpResponse> create(final SessionInputBuffer buffer, final MessageConstraints constraints) {
            LineParser lineParser = new BasicLineParser() {

                @Override
                public Header parseHeader(final CharArrayBuffer buffer) {
                    try {
                        return super.parseHeader(buffer);
                    } catch (ParseException ex) {
                        return new BasicHeader(buffer.toString(), null);
                    }
                }
            };
            return new DefaultHttpResponseParser(buffer, lineParser, DefaultHttpResponseFactory.INSTANCE, constraints);
        }
    };
    NHttpMessageWriterFactory<HttpRequest> requestWriterFactory = new DefaultHttpRequestWriterFactory();
    // Use a custom connection factory to customize the process of
    // initialization of outgoing HTTP connections. Beside standard
    // connection
    // configuration parameters HTTP connection factory can define message
    // parser / writer routines to be employed by individual connections.
    NHttpConnectionFactory<ManagedNHttpClientConnection> connFactory = new ManagedNHttpClientConnectionFactory(requestWriterFactory, responseParserFactory, HeapByteBufferAllocator.INSTANCE);
    // Client HTTP connection objects when fully initialized can be bound to
    // an arbitrary network socket. The process of network socket
    // initialization,
    // its connection to a remote address and binding to a local one is
    // controlled
    // by a connection socket factory.
    // SSL context for secure connections can be created either based on
    // system or application specific properties.
    // SSLContext sslcontext = org.apache.http.ssl.SSLContexts.createSystemDefault();
    // SSLContext sslcontext = org.apache.http.ssl.SSLContexts.createDefault();
    SSLContext sslcontext = null;
    try {
        sslcontext = this.createIgnoreVerifySSL();
    } catch (KeyManagementException | NoSuchAlgorithmException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    // Use custom hostname verifier to customize SSL hostname verification.
    HostnameVerifier hostnameVerifier = new DefaultHostnameVerifier();
    // Create a registry of custom connection session strategies for
    // supported
    // protocol schemes.
    Registry<SchemeIOSessionStrategy> sessionStrategyRegistry = RegistryBuilder.<SchemeIOSessionStrategy>create().register("http", NoopIOSessionStrategy.INSTANCE).register("https", new SSLIOSessionStrategy(sslcontext)).build();
    // .register("https", SSLConnectionSocketFactory.getSystemSocketFactory()).build();
    // Use custom DNS resolver to override the system DNS resolution.
    DnsResolver dnsResolver = new SystemDefaultDnsResolver() {

        @Override
        public InetAddress[] resolve(final String host) throws UnknownHostException {
            if (host.equalsIgnoreCase("myhost")) {
                return new InetAddress[] { InetAddress.getByAddress(new byte[] { 127, 0, 0, 1 }) };
            } else {
                return super.resolve(host);
            }
        }
    };
    // Create I/O reactor configuration
    IOReactorConfig ioReactorConfig = IOReactorConfig.custom().setIoThreadCount(Runtime.getRuntime().availableProcessors()).setConnectTimeout(30000).setSoTimeout(30000).build();
    // Create a custom I/O reactort
    ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor(ioReactorConfig);
    // Create a connection manager with custom configuration.
    PoolingNHttpClientConnectionManager connManager = new PoolingNHttpClientConnectionManager(ioReactor, connFactory, sessionStrategyRegistry, dnsResolver);
    // Create message constraints
    MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200).setMaxLineLength(2000).build();
    // Create connection configuration
    ConnectionConfig connectionConfig = ConnectionConfig.custom().setMalformedInputAction(CodingErrorAction.IGNORE).setUnmappableInputAction(CodingErrorAction.IGNORE).setCharset(Consts.UTF_8).setMessageConstraints(messageConstraints).build();
    // Configure the connection manager to use connection configuration
    // either
    // by default or for a specific host.
    connManager.setDefaultConnectionConfig(connectionConfig);
    // connManager.setConnectionConfig(new HttpHost("somehost", 80),
    // ConnectionConfig.DEFAULT);
    // Configure total max or per route limits for persistent connections
    // that can be kept in the pool or leased by the connection manager.
    connManager.setMaxTotal(100);
    connManager.setDefaultMaxPerRoute(10);
    // connManager.setMaxPerRoute(new HttpRoute(new HttpHost("somehost",
    // 80)), 20);
    // Use custom cookie store if necessary.
    CookieStore cookieStore = new BasicCookieStore();
    // Use custom credentials provider if necessary.
    // CredentialsProvider credentialsProvider = new
    // BasicCredentialsProvider();
    // credentialsProvider.setCredentials(new AuthScope("localhost", 8889),
    // new UsernamePasswordCredentials("squid", "nopassword"));
    // Create global request configuration
    RequestConfig defaultRequestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.DEFAULT).setExpectContinueEnabled(true).setTargetPreferredAuthSchemes(Arrays.asList(AuthSchemes.NTLM, AuthSchemes.DIGEST)).setProxyPreferredAuthSchemes(Arrays.asList(AuthSchemes.BASIC)).build();
    // Create an HttpClient with the given custom dependencies and
    // configuration.
    // CloseableHttpAsyncClient
    httpAsyncClient = HttpAsyncClients.custom().setConnectionManager(connManager).build();
}

Example 2 with SystemDefaultDnsResolver

use of org.apache.http.impl.conn.SystemDefaultDnsResolver in project dropwizard by dropwizard.

the class JerseyClientBuilderTest method usesACustomDnsResolver.

@Test
void usesACustomDnsResolver() {
    final DnsResolver customDnsResolver = new SystemDefaultDnsResolver();
    builder.using(customDnsResolver);
    verify(apacheHttpClientBuilder).using(customDnsResolver);
}