HttpClient() { try { PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(); SocketConfig socketConfig = SocketConfig.custom().setTcpNoDelay(true).build(); connManager.setDefaultSocketConfig(socketConfig); MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200).setMaxLineLength(2000).build(); ConnectionConfig connectionConfig = ConnectionConfig.custom() .setMalformedInputAction(CodingErrorAction.IGNORE) .setUnmappableInputAction(CodingErrorAction.IGNORE) .setCharset(Consts.UTF_8) .setMessageConstraints(messageConstraints) .build(); connManager.setDefaultConnectionConfig(connectionConfig); connManager.setMaxTotal(MAX_TOTAL_CONNECTIONS); connManager.setDefaultMaxPerRoute(MAX_ROUTE_CONNECTIONS); connManager.setMaxPerRoute(new HttpRoute(DEFAULT_TARGETHOST), 50); HttpRequestRetryHandler retryHandler = new HttpRequestRetryHandler() { @Override public boolean retryRequest( IOException exception, int executionCount, HttpContext context) { if (executionCount >= 5) return false; if (exception instanceof InterruptedIOException) return false; if (exception instanceof UnknownHostException) return false; if (exception instanceof ConnectTimeoutException) return false; if (exception instanceof SSLException) return false; HttpClientContext clientContext = HttpClientContext.adapt(context); HttpRequest request = clientContext.getRequest(); boolean idempotent = !(request instanceof HttpEntityEnclosingRequest); if (idempotent) return true; return false; } }; httpClient = HttpClients.custom() .setConnectionManager(connManager) .setRetryHandler(retryHandler) .build(); } catch (Exception e) { logger.error("HttpClientUtil error : [{}].", e.getMessage(), e); } }
private static PoolingHttpClientConnectionManager bulidConnectionManager() { MessageConstraints messageConstraints = MessageConstraints.custom().setMaxHeaderCount(200).setMaxLineLength(2000).build(); ConnectionConfig connectionConfig = ConnectionConfig.custom() .setMalformedInputAction(CodingErrorAction.IGNORE) .setUnmappableInputAction(CodingErrorAction.IGNORE) .setCharset(Consts.UTF_8) .setMessageConstraints(messageConstraints) .build(); PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(); connectionManager.setMaxTotal(600); connectionManager.setDefaultMaxPerRoute(200); connectionManager.setDefaultConnectionConfig(connectionConfig); connectionManager.setValidateAfterInactivity(1000); return connectionManager; }
public static final 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. HttpMessageParserFactory<HttpResponse> responseParserFactory = new DefaultHttpResponseParserFactory() { @Override public HttpMessageParser<HttpResponse> create( SessionInputBuffer buffer, 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) { @Override protected boolean reject(final CharArrayBuffer line, int count) { // try to ignore all garbage preceding a status line infinitely return false; } }; } }; HttpMessageWriterFactory<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. HttpConnectionFactory<HttpRoute, ManagedHttpClientConnection> connFactory = new ManagedHttpClientConnectionFactory(requestWriterFactory, responseParserFactory); // 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(); // Create a registry of custom connection socket factories for supported // protocol schemes. Registry<ConnectionSocketFactory> socketFactoryRegistry = RegistryBuilder.<ConnectionSocketFactory>create() .register("http", PlainConnectionSocketFactory.INSTANCE) .register("https", new SSLConnectionSocketFactory(sslcontext)) .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 a connection manager with custom configuration. PoolingHttpClientConnectionManager connManager = new PoolingHttpClientConnectionManager(socketFactoryRegistry, connFactory, dnsResolver); // Create socket configuration SocketConfig socketConfig = SocketConfig.custom().setTcpNoDelay(true).build(); // Configure the connection manager to use socket configuration either // by default or for a specific host. connManager.setDefaultSocketConfig(socketConfig); connManager.setSocketConfig(new HttpHost("somehost", 80), socketConfig); // Validate connections after 1 sec of inactivity connManager.setValidateAfterInactivity(1000); // 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. CloseableHttpClient httpclient = HttpClients.custom() .setConnectionManager(connManager) .setDefaultCookieStore(cookieStore) .setDefaultCredentialsProvider(credentialsProvider) .setProxy(new HttpHost("myproxy", 8080)) .setDefaultRequestConfig(defaultRequestConfig) .build(); try { HttpGet httpget = new HttpGet("http://httpbin.org/get"); // 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 context = HttpClientContext.create(); // Contextual attributes set the local context level will take // precedence over those set at the client level. context.setCookieStore(cookieStore); context.setCredentialsProvider(credentialsProvider); System.out.println("executing request " + httpget.getURI()); CloseableHttpResponse response = httpclient.execute(httpget, context); try { System.out.println("----------------------------------------"); System.out.println(response.getStatusLine()); System.out.println(EntityUtils.toString(response.getEntity())); System.out.println("----------------------------------------"); // 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 context.getRequest(); // Execution route context.getHttpRoute(); // Target auth state context.getTargetAuthState(); // Proxy auth state context.getTargetAuthState(); // Cookie origin context.getCookieOrigin(); // Cookie spec used context.getCookieSpec(); // User security token context.getUserToken(); } finally { response.close(); } } finally { httpclient.close(); } }