Example usage for org.apache.http.impl.nio.client CloseableHttpAsyncClient close

Introduction

In this page you can find the example usage for org.apache.http.impl.nio.client CloseableHttpAsyncClient close.

Prototype

public void close() throws IOException;

Source Link

Document

Closes this stream and releases any system resources associated with it.

Usage

From source file:com.boonya.http.async.examples.nio.client.AsyncClientCustomContext.java

public final static void main(String[] args) throws Exception {
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
    try {/*from w ww . ja  v a2s  .  co  m*/
        // Create a local instance of cookie store
        CookieStore cookieStore = new BasicCookieStore();

        // Create local HTTP context
        HttpClientContext localContext = HttpClientContext.create();
        // Bind custom cookie store to the local context
        localContext.setCookieStore(cookieStore);

        HttpGet httpget = new HttpGet("http://localhost/");
        System.out.println("Executing request " + httpget.getRequestLine());

        httpclient.start();

        // Pass local context as a parameter
        Future<HttpResponse> future = httpclient.execute(httpget, localContext, null);

        // Please note that it may be unsafe to access HttpContext instance
        // while the request is still being executed

        HttpResponse response = future.get();
        System.out.println("Response: " + response.getStatusLine());
        List<Cookie> cookies = cookieStore.getCookies();
        for (int i = 0; i < cookies.size(); i++) {
            System.out.println("Local cookie: " + cookies.get(i));
        }
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
}

---

From source file:org.jaqpot.core.service.client.jpdi.JPDIClientFactory.java

public static void main(String[] args) throws IOException, InterruptedException, ExecutionException {
    CloseableHttpAsyncClient asyncClient = HttpAsyncClientBuilder.create().build();
    asyncClient.start();//w ww . ja  v a2  s . c om
    HttpGet request = new HttpGet("http://www.google.com");
    request.addHeader("Accept", "text/html");
    Future f = asyncClient.execute(request, new FutureCallback<HttpResponse>() {
        @Override
        public void completed(HttpResponse t) {
            System.out.println("completed");

            try {
                String result = new BufferedReader(new InputStreamReader(t.getEntity().getContent())).lines()
                        .collect(Collectors.joining("\n"));
                System.out.println(result);
            } catch (IOException ex) {
                Logger.getLogger(JPDIClientFactory.class.getName()).log(Level.SEVERE, null, ex);
            } catch (UnsupportedOperationException ex) {
                Logger.getLogger(JPDIClientFactory.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        @Override
        public void failed(Exception excptn) {
            System.out.println("failed");
        }

        @Override
        public void cancelled() {
            System.out.println("cancelled");
        }
    });
    f.get();
    asyncClient.close();
}

---

From source file:com.boonya.http.async.examples.nio.client.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .build();//from   ww  w.j  a  v a2  s  .c o m
    try {
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://www.apache.org/"),
                new HttpGet("https://www.verisign.com/"), new HttpGet("http://www.google.com/") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

---

From source file:rg.apache.http.examples.async.AsyncClientHttpExchangeFutureCallback.java

public static void main(final String[] args) throws Exception {
    RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(3000).setConnectTimeout(3000).build();
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setDefaultRequestConfig(requestConfig)
            .setThreadFactory(new NamedThreadFactory("dddddddd")).build();
    try {//from   w  ww. j a v  a 2  s.  c  o m
        httpclient.start();
        final HttpGet[] requests = new HttpGet[] { new HttpGet("http://httpbin.org/ip"),
                new HttpGet("https://httpbin.org/ip"), new HttpGet("http://httpbin.org/headers") };
        final CountDownLatch latch = new CountDownLatch(requests.length);
        for (final HttpGet request : requests) {
            httpclient.execute(request, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(request.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
    System.out.println("Done");
}

---

From source file:test.AsyncClientCustomContext.java

public final static void main(String[] args) throws Exception {
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
    HttpEntity entity = null;//from w  ww. ja va 2s  . c  o  m
    String jsonContent = "";
    try {
        // Create a local instance of cookie store
        CookieStore cookieStore = new BasicCookieStore();

        // Create local HTTP context
        HttpClientContext localContext = HttpClientContext.create();
        // Bind custom cookie store to the local context
        localContext.setCookieStore(cookieStore);

        HttpGet httpget = new HttpGet("http://viphp.sinaapp.com/baidu/translate/translate.php?origin=");
        System.out.println("Executing request " + httpget.getRequestLine());

        httpclient.start();

        // Pass local context as a parameter
        Future<HttpResponse> future = httpclient.execute(httpget, localContext, null);

        // Please note that it may be unsafe to access HttpContext instance
        // while the request is still being executed
        HttpResponse response = future.get();
        System.out.println("Response: " + response.getStatusLine());
        entity = response.getEntity();
        jsonContent = EntityUtils.toString(entity, "UTF-8");
        System.out.println("jsonContent:" + jsonContent);
        List<Cookie> cookies = cookieStore.getCookies();
        for (int i = 0; i < cookies.size(); i++) {
            System.out.println("Local cookie: " + cookies.get(i));
        }
        System.out.println("Shutting down");
    } finally {
        httpclient.close();
    }
}

---

From source file:com.boonya.http.async.examples.nio.client.AsyncClientEvictExpiredConnections.java

public static void main(String[] args) throws Exception {
    ConnectingIOReactor ioReactor = new DefaultConnectingIOReactor();
    PoolingNHttpClientConnectionManager cm = new PoolingNHttpClientConnectionManager(ioReactor);
    cm.setMaxTotal(100);/*from   w  w w.jav  a 2 s. co  m*/
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.custom().setConnectionManager(cm).build();
    try {
        httpclient.start();

        // create an array of URIs to perform GETs on
        String[] urisToGet = { "http://hc.apache.org/", "http://hc.apache.org/httpcomponents-core-ga/",
                "http://hc.apache.org/httpcomponents-client-ga/", };

        IdleConnectionEvictor connEvictor = new IdleConnectionEvictor(cm);
        connEvictor.start();

        final CountDownLatch latch = new CountDownLatch(urisToGet.length);
        for (final String uri : urisToGet) {
            final HttpGet httpget = new HttpGet(uri);
            httpclient.execute(httpget, new FutureCallback<HttpResponse>() {

                @Override
                public void completed(final HttpResponse response) {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + "->" + response.getStatusLine());
                }

                @Override
                public void failed(final Exception ex) {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + "->" + ex);
                }

                @Override
                public void cancelled() {
                    latch.countDown();
                    System.out.println(httpget.getRequestLine() + " cancelled");
                }

            });
        }
        latch.await();

        // Sleep 10 sec and let the connection evictor do its job
        Thread.sleep(20000);

        // Shut down the evictor thread
        connEvictor.shutdown();
        connEvictor.join();

    } finally {
        httpclient.close();
    }
}

---

From source file:afred.javademo.httpclient.official.AsyncClientConfiguration.java

public final static void main(String[] args) throws Exception {

    // 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/*from  w ww .  j  av a2  s . c  o  m*/
        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 = SSLContexts.createSystemDefault();
    // Use custom hostname verifier to customize SSL hostname verification.
    X509HostnameVerifier hostnameVerifier = new BrowserCompatHostnameVerifier();

    // 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, hostnameVerifier)).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();
    // Create global request configuration
    RequestConfig defaultRequestConfig = RequestConfig.custom().setCookieSpec(CookieSpecs.BEST_MATCH)
            .setExpectContinueEnabled(true).setStaleConnectionCheckEnabled(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 httpclient = HttpAsyncClients.custom().setConnectionManager(connManager)
            .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider)
            .setProxy(new HttpHost("myproxy", 8080)).setDefaultRequestConfig(defaultRequestConfig).build();

    try {
        HttpGet httpget = new HttpGet("http://localhost/");
        // Request configuration can be overridden at the request level.
        // They will take precedence over the one set at the client level.
        RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000)
                .setConnectTimeout(5000).setConnectionRequestTimeout(5000)
                .setProxy(new HttpHost("myotherproxy", 8080)).build();
        httpget.setConfig(requestConfig);

        // Execution context can be customized locally.
        HttpClientContext localContext = HttpClientContext.create();
        // Contextual attributes set the local context level will take
        // precedence over those set at the client level.
        localContext.setCookieStore(cookieStore);
        localContext.setCredentialsProvider(credentialsProvider);

        System.out.println("Executing request " + httpget.getRequestLine());

        httpclient.start();

        // Pass local context as a parameter
        Future<HttpResponse> future = httpclient.execute(httpget, localContext, null);

        // Please note that it may be unsafe to access HttpContext instance
        // while the request is still being executed

        HttpResponse response = future.get();
        System.out.println("Response: " + response.getStatusLine());

        // Once the request has been executed the local context can
        // be used to examine updated state and various objects affected
        // by the request execution.

        // Last executed request
        localContext.getRequest();
        // Execution route
        localContext.getHttpRoute();
        // Target auth state
        localContext.getTargetAuthState();
        // Proxy auth state
        localContext.getTargetAuthState();
        // Cookie origin
        localContext.getCookieOrigin();
        // Cookie spec used
        localContext.getCookieSpec();
        // User security token
        localContext.getUserToken();
    } finally {
        httpclient.close();
    }
}

---

From source file:com.boonya.http.async.examples.nio.client.AsyncClientConfiguration.java

public final static void main(String[] args) throws Exception {

    // 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/*w ww . j  av  a 2  s  . c o m*/
        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 = SSLContexts.createSystemDefault();
    // 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, hostnameVerifier)).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();
    // 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 httpclient = HttpAsyncClients.custom().setConnectionManager(connManager)
            .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider)
            .setProxy(new HttpHost("myproxy", 8080)).setDefaultRequestConfig(defaultRequestConfig).build();

    try {
        HttpGet httpget = new HttpGet("http://localhost/");
        // Request configuration can be overridden at the request level.
        // They will take precedence over the one set at the client level.
        RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000)
                .setConnectTimeout(5000).setConnectionRequestTimeout(5000)
                .setProxy(new HttpHost("myotherproxy", 8080)).build();
        httpget.setConfig(requestConfig);

        // Execution context can be customized locally.
        HttpClientContext localContext = HttpClientContext.create();
        // Contextual attributes set the local context level will take
        // precedence over those set at the client level.
        localContext.setCookieStore(cookieStore);
        localContext.setCredentialsProvider(credentialsProvider);

        System.out.println("Executing request " + httpget.getRequestLine());

        httpclient.start();

        // Pass local context as a parameter
        Future<HttpResponse> future = httpclient.execute(httpget, localContext, null);

        // Please note that it may be unsafe to access HttpContext instance
        // while the request is still being executed

        HttpResponse response = future.get();
        System.out.println("Response: " + response.getStatusLine());

        // Once the request has been executed the local context can
        // be used to examine updated state and various objects affected
        // by the request execution.

        // Last executed request
        localContext.getRequest();
        // Execution route
        localContext.getHttpRoute();
        // Target auth state
        localContext.getTargetAuthState();
        // Proxy auth state
        localContext.getTargetAuthState();
        // Cookie origin
        localContext.getCookieOrigin();
        // Cookie spec used
        localContext.getCookieSpec();
        // User security token
        localContext.getUserToken();
    } finally {
        httpclient.close();
    }
}

---

From source file:httpasync.AsyncClientConfiguration.java

public final static void main(String[] args) throws Exception {

    // 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//from w w w.  j a v  a 2s.  c  om
        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 = SSLContexts.createSystemDefault();
    // 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, hostnameVerifier)).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();
    // 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 httpclient = HttpAsyncClients.custom().setConnectionManager(connManager)
            .setDefaultCookieStore(cookieStore).setDefaultCredentialsProvider(credentialsProvider)
            //            .setProxy(new HttpHost("myproxy", 8080))
            .setDefaultRequestConfig(defaultRequestConfig).build();

    try {
        //            HttpGet httpget = new HttpGet("http://localhost/");
        HttpGet httpget = new HttpGet("https://jdev.jimubox.com/logstash/#/dashboard/elasticsearch/stockNginx");
        // Request configuration can be overridden at the request level.
        // They will take precedence over the one set at the client level.
        RequestConfig requestConfig = RequestConfig.copy(defaultRequestConfig).setSocketTimeout(5000)
                .setConnectTimeout(5000).setConnectionRequestTimeout(5000)
                //                .setProxy(new HttpHost("myotherproxy", 8080))
                .build();
        httpget.setConfig(requestConfig);

        // Execution context can be customized locally.
        HttpClientContext localContext = HttpClientContext.create();
        // Contextual attributes set the local context level will take
        // precedence over those set at the client level.
        localContext.setCookieStore(cookieStore);
        localContext.setCredentialsProvider(credentialsProvider);

        System.out.println("Executing request " + httpget.getRequestLine());

        httpclient.start();

        // Pass local context as a parameter
        Future<HttpResponse> future = httpclient.execute(httpget, localContext, null);

        // Please note that it may be unsafe to access HttpContext instance
        // while the request is still being executed

        HttpResponse response = future.get();
        System.out.println("Response: " + response.getStatusLine());

        // Once the request has been executed the local context can
        // be used to examine updated state and various objects affected
        // by the request execution.

        // Last executed request
        localContext.getRequest();
        // Execution route
        localContext.getHttpRoute();
        // Target auth state
        localContext.getTargetAuthState();
        // Proxy auth state
        localContext.getTargetAuthState();
        // Cookie origin
        localContext.getCookieOrigin();
        // Cookie spec used
        localContext.getCookieSpec();
        // User security token
        localContext.getUserToken();
    } finally {
        httpclient.close();
    }
}

---

From source file:httpasync.QuickStart.java

public static void main(String[] args) throws Exception {
    CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
    try {/*from  www . j a  v a2 s.  c o  m*/
        // Start the client
        httpclient.start();

        // Execute request
        final HttpGet request1 = new HttpGet("http://www.apache.org/");
        Future<HttpResponse> future = httpclient.execute(request1, null);
        // and wait until response is received
        HttpResponse response1 = future.get();
        System.out.println(request1.getRequestLine() + "->" + response1.getStatusLine());

        // One most likely would want to use a callback for operation result
        final CountDownLatch latch1 = new CountDownLatch(1);
        final HttpGet request2 = new HttpGet("http://www.apache.org/");
        httpclient.execute(request2, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response2) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + response2.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch1.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch1.await();

        // In real world one most likely would want also want to stream
        // request and response body content
        final CountDownLatch latch2 = new CountDownLatch(1);
        final HttpGet request3 = new HttpGet("http://www.apache.org/");
        HttpAsyncRequestProducer producer3 = HttpAsyncMethods.create(request3);
        AsyncCharConsumer<HttpResponse> consumer3 = new AsyncCharConsumer<HttpResponse>() {

            HttpResponse response;

            @Override
            protected void onResponseReceived(final HttpResponse response) {
                this.response = response;
            }

            @Override
            protected void onCharReceived(final CharBuffer buf, final IOControl ioctrl) throws IOException {
                // Do something useful
            }

            @Override
            protected void releaseResources() {
            }

            @Override
            protected HttpResponse buildResult(final HttpContext context) {
                return this.response;
            }

        };
        httpclient.execute(producer3, consumer3, new FutureCallback<HttpResponse>() {

            @Override
            public void completed(final HttpResponse response3) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + response3.getStatusLine());
            }

            @Override
            public void failed(final Exception ex) {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + "->" + ex);
            }

            @Override
            public void cancelled() {
                latch2.countDown();
                System.out.println(request2.getRequestLine() + " cancelled");
            }

        });
        latch2.await();

    } finally {
        httpclient.close();
    }
}

---

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