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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
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package org.apache.http.impl.client;

import java.io.Closeable;
import java.net.ProxySelector;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;

import org.apache.http.ConnectionReuseStrategy;
import org.apache.http.Header;
import org.apache.http.HttpHost;
import org.apache.http.HttpRequestInterceptor;
import org.apache.http.HttpResponseInterceptor;
import org.apache.http.annotation.NotThreadSafe;
import org.apache.http.auth.AuthSchemeProvider;
import org.apache.http.client.AuthenticationStrategy;
import org.apache.http.client.BackoffManager;
import org.apache.http.client.ConnectionBackoffStrategy;
import org.apache.http.client.CookieStore;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpRequestRetryHandler;
import org.apache.http.client.RedirectStrategy;
import org.apache.http.client.ServiceUnavailableRetryStrategy;
import org.apache.http.client.UserTokenHandler;
import org.apache.http.client.config.AuthSchemes;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.protocol.RequestAcceptEncoding;
import org.apache.http.client.protocol.RequestAddCookies;
import org.apache.http.client.protocol.RequestAuthCache;
import org.apache.http.client.protocol.RequestClientConnControl;
import org.apache.http.client.protocol.RequestDefaultHeaders;
import org.apache.http.client.protocol.RequestExpectContinue;
import org.apache.http.client.protocol.ResponseContentEncoding;
import org.apache.http.client.protocol.ResponseProcessCookies;
import org.apache.http.config.ConnectionConfig;
import org.apache.http.config.Lookup;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.config.SocketConfig;
import org.apache.http.conn.ConnectionKeepAliveStrategy;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.conn.SchemePortResolver;
import org.apache.http.conn.routing.HttpRoutePlanner;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.LayeredConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContexts;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.cookie.CookieSpecProvider;
import org.apache.http.impl.DefaultConnectionReuseStrategy;
import org.apache.http.impl.NoConnectionReuseStrategy;
import org.apache.http.impl.auth.BasicSchemeFactory;
import org.apache.http.impl.auth.DigestSchemeFactory;
import org.apache.http.impl.auth.KerberosSchemeFactory;
import org.apache.http.impl.auth.NTLMSchemeFactory;
import org.apache.http.impl.auth.SPNegoSchemeFactory;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;
import org.apache.http.impl.conn.DefaultRoutePlanner;
import org.apache.http.impl.conn.DefaultSchemePortResolver;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.impl.conn.SystemDefaultRoutePlanner;
import org.apache.http.impl.cookie.BestMatchSpecFactory;
import org.apache.http.impl.cookie.BrowserCompatSpecFactory;
import org.apache.http.impl.cookie.IgnoreSpecFactory;
import org.apache.http.impl.cookie.NetscapeDraftSpecFactory;
import org.apache.http.impl.cookie.RFC2109SpecFactory;
import org.apache.http.impl.cookie.RFC2965SpecFactory;
import org.apache.http.impl.execchain.BackoffStrategyExec;
import org.apache.http.impl.execchain.ClientExecChain;
import org.apache.http.impl.execchain.MainClientExec;
import org.apache.http.impl.execchain.ProtocolExec;
import org.apache.http.impl.execchain.RedirectExec;
import org.apache.http.impl.execchain.RetryExec;
import org.apache.http.impl.execchain.ServiceUnavailableRetryExec;
import org.apache.http.protocol.HttpProcessor;
import org.apache.http.protocol.HttpProcessorBuilder;
import org.apache.http.protocol.HttpRequestExecutor;
import org.apache.http.protocol.RequestContent;
import org.apache.http.protocol.RequestTargetHost;
import org.apache.http.protocol.RequestUserAgent;
import org.apache.http.util.TextUtils;
import org.apache.http.util.VersionInfo;

/**
 * Builder for {@link CloseableHttpClient} instances.
 * 

* When a particular component is not explicitly this class will * use its default implementation. System properties will be taken * into account when configuring the default implementations when * {@link #useSystemProperties()} method is called prior to calling * {@link #build()}. *

    *
  • ssl.TrustManagerFactory.algorithm
  • *
  • javax.net.ssl.trustStoreType
  • *
  • javax.net.ssl.trustStore
  • *
  • javax.net.ssl.trustStoreProvider
  • *
  • javax.net.ssl.trustStorePassword
  • *
  • ssl.KeyManagerFactory.algorithm
  • *
  • javax.net.ssl.keyStoreType
  • *
  • javax.net.ssl.keyStore
  • *
  • javax.net.ssl.keyStoreProvider
  • *
  • javax.net.ssl.keyStorePassword
  • *
  • https.protocols
  • *
  • https.cipherSuites
  • *
  • http.proxyHost
  • *
  • http.proxyPort
  • *
  • http.nonProxyHosts
  • *
  • http.keepAlive
  • *
  • http.maxConnections
  • *
  • http.agent
  • *
*

* Please note that some settings used by this class can be mutually * exclusive and may not apply when building {@link CloseableHttpClient} * instances. * * @since 4.3 */ @NotThreadSafe public class HttpClientBuilder { private HttpRequestExecutor requestExec; private X509HostnameVerifier hostnameVerifier; private LayeredConnectionSocketFactory sslSocketFactory; private SSLContext sslcontext; private HttpClientConnectionManager connManager; private SchemePortResolver schemePortResolver; private ConnectionReuseStrategy reuseStrategy; private ConnectionKeepAliveStrategy keepAliveStrategy; private AuthenticationStrategy targetAuthStrategy; private AuthenticationStrategy proxyAuthStrategy; private UserTokenHandler userTokenHandler; private HttpProcessor httpprocessor; private LinkedList requestFirst; private LinkedList requestLast; private LinkedList responseFirst; private LinkedList responseLast; private HttpRequestRetryHandler retryHandler; private HttpRoutePlanner routePlanner; private RedirectStrategy redirectStrategy; private ConnectionBackoffStrategy connectionBackoffStrategy; private BackoffManager backoffManager; private ServiceUnavailableRetryStrategy serviceUnavailStrategy; private Lookup authSchemeRegistry; private Lookup cookieSpecRegistry; private CookieStore cookieStore; private CredentialsProvider credentialsProvider; private String userAgent; private HttpHost proxy; private Collection defaultHeaders; private SocketConfig defaultSocketConfig; private ConnectionConfig defaultConnectionConfig; private RequestConfig defaultRequestConfig; private boolean systemProperties; private boolean redirectHandlingDisabled; private boolean automaticRetriesDisabled; private boolean contentCompressionDisabled; private boolean cookieManagementDisabled; private boolean authCachingDisabled; private boolean connectionStateDisabled; private int maxConnTotal = 0; private int maxConnPerRoute = 0; private List closeables; static final String DEFAULT_USER_AGENT; static { final VersionInfo vi = VersionInfo.loadVersionInfo ("org.apache.http.client", HttpClientBuilder.class.getClassLoader()); final String release = (vi != null) ? vi.getRelease() : VersionInfo.UNAVAILABLE; DEFAULT_USER_AGENT = "Apache-HttpClient/" + release + " (java 1.5)"; } public static HttpClientBuilder create() { return new HttpClientBuilder(); } protected HttpClientBuilder() { super(); } /** * Assigns {@link HttpRequestExecutor} instance. */ public final HttpClientBuilder setRequestExecutor(final HttpRequestExecutor requestExec) { this.requestExec = requestExec; return this; } /** * Assigns {@link X509HostnameVerifier} instance. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} and the {@link #setSSLSocketFactory( * org.apache.http.conn.socket.LayeredConnectionSocketFactory)} methods. */ public final HttpClientBuilder setHostnameVerifier(final X509HostnameVerifier hostnameVerifier) { this.hostnameVerifier = hostnameVerifier; return this; } /** * Assigns {@link SSLContext} instance. *

*

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} and the {@link #setSSLSocketFactory( * org.apache.http.conn.socket.LayeredConnectionSocketFactory)} methods. */ public final HttpClientBuilder setSslcontext(final SSLContext sslcontext) { this.sslcontext = sslcontext; return this; } /** * Assigns {@link LayeredConnectionSocketFactory} instance. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} method. */ public final HttpClientBuilder setSSLSocketFactory( final LayeredConnectionSocketFactory sslSocketFactory) { this.sslSocketFactory = sslSocketFactory; return this; } /** * Assigns maximum total connection value. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} method. */ public final HttpClientBuilder setMaxConnTotal(final int maxConnTotal) { this.maxConnTotal = maxConnTotal; return this; } /** * Assigns maximum connection per route value. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} method. */ public final HttpClientBuilder setMaxConnPerRoute(final int maxConnPerRoute) { this.maxConnPerRoute = maxConnPerRoute; return this; } /** * Assigns default {@link SocketConfig}. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} method. */ public final HttpClientBuilder setDefaultSocketConfig(final SocketConfig config) { this.defaultSocketConfig = config; return this; } /** * Assigns default {@link ConnectionConfig}. *

* Please note this value can be overridden by the {@link #setConnectionManager( * org.apache.http.conn.HttpClientConnectionManager)} method. */ public final HttpClientBuilder setDefaultConnectionConfig(final ConnectionConfig config) { this.defaultConnectionConfig = config; return this; } /** * Assigns {@link HttpClientConnectionManager} instance. */ public final HttpClientBuilder setConnectionManager( final HttpClientConnectionManager connManager) { this.connManager = connManager; return this; } /** * Assigns {@link ConnectionReuseStrategy} instance. */ public final HttpClientBuilder setConnectionReuseStrategy( final ConnectionReuseStrategy reuseStrategy) { this.reuseStrategy = reuseStrategy; return this; } /** * Assigns {@link ConnectionKeepAliveStrategy} instance. */ public final HttpClientBuilder setKeepAliveStrategy( final ConnectionKeepAliveStrategy keepAliveStrategy) { this.keepAliveStrategy = keepAliveStrategy; return this; } /** * Assigns {@link AuthenticationStrategy} instance for proxy * authentication. */ public final HttpClientBuilder setTargetAuthenticationStrategy( final AuthenticationStrategy targetAuthStrategy) { this.targetAuthStrategy = targetAuthStrategy; return this; } /** * Assigns {@link AuthenticationStrategy} instance for target * host authentication. */ public final HttpClientBuilder setProxyAuthenticationStrategy( final AuthenticationStrategy proxyAuthStrategy) { this.proxyAuthStrategy = proxyAuthStrategy; return this; } /** * Assigns {@link UserTokenHandler} instance. *

* Please note this value can be overridden by the {@link #disableConnectionState()} * method. */ public final HttpClientBuilder setUserTokenHandler(final UserTokenHandler userTokenHandler) { this.userTokenHandler = userTokenHandler; return this; } /** * Disables connection state tracking. */ public final HttpClientBuilder disableConnectionState() { connectionStateDisabled = true; return this; } /** * Assigns {@link SchemePortResolver} instance. */ public final HttpClientBuilder setSchemePortResolver( final SchemePortResolver schemePortResolver) { this.schemePortResolver = schemePortResolver; return this; } /** * Assigns User-Agent value. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder setUserAgent(final String userAgent) { this.userAgent = userAgent; return this; } /** * Assigns default request header values. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder setDefaultHeaders(final Collection defaultHeaders) { this.defaultHeaders = defaultHeaders; return this; } /** * Adds this protocol interceptor to the head of the protocol processing list. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder addInterceptorFirst(final HttpResponseInterceptor itcp) { if (itcp == null) { return this; } if (responseFirst == null) { responseFirst = new LinkedList(); } responseFirst.addFirst(itcp); return this; } /** * Adds this protocol interceptor to the tail of the protocol processing list. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder addInterceptorLast(final HttpResponseInterceptor itcp) { if (itcp == null) { return this; } if (responseLast == null) { responseLast = new LinkedList(); } responseLast.addLast(itcp); return this; } /** * Adds this protocol interceptor to the head of the protocol processing list. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder addInterceptorFirst(final HttpRequestInterceptor itcp) { if (itcp == null) { return this; } if (requestFirst == null) { requestFirst = new LinkedList(); } requestFirst.addFirst(itcp); return this; } /** * Adds this protocol interceptor to the tail of the protocol processing list. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder addInterceptorLast(final HttpRequestInterceptor itcp) { if (itcp == null) { return this; } if (requestLast == null) { requestLast = new LinkedList(); } requestLast.addLast(itcp); return this; } /** * Disables state (cookie) management. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder disableCookieManagement() { this.cookieManagementDisabled = true; return this; } /** * Disables automatic content decompression. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder disableContentCompression() { contentCompressionDisabled = true; return this; } /** * Disables authentication scheme caching. *

* Please note this value can be overridden by the {@link #setHttpProcessor( * org.apache.http.protocol.HttpProcessor)} method. */ public final HttpClientBuilder disableAuthCaching() { this.authCachingDisabled = true; return this; } /** * Assigns {@link HttpProcessor} instance. */ public final HttpClientBuilder setHttpProcessor(final HttpProcessor httpprocessor) { this.httpprocessor = httpprocessor; return this; } /** * Assigns {@link HttpRequestRetryHandler} instance. *

* Please note this value can be overridden by the {@link #disableAutomaticRetries()} * method. */ public final HttpClientBuilder setRetryHandler(final HttpRequestRetryHandler retryHandler) { this.retryHandler = retryHandler; return this; } /** * Disables automatic request recovery and re-execution. */ public final HttpClientBuilder disableAutomaticRetries() { automaticRetriesDisabled = true; return this; } /** * Assigns default proxy value. *

* Please note this value can be overridden by the {@link #setRoutePlanner( * org.apache.http.conn.routing.HttpRoutePlanner)} method. */ public final HttpClientBuilder setProxy(final HttpHost proxy) { this.proxy = proxy; return this; } /** * Assigns {@link HttpRoutePlanner} instance. */ public final HttpClientBuilder setRoutePlanner(final HttpRoutePlanner routePlanner) { this.routePlanner = routePlanner; return this; } /** * Assigns {@link RedirectStrategy} instance. *

* Please note this value can be overridden by the {@link #disableRedirectHandling()} * method. ` */ public final HttpClientBuilder setRedirectStrategy(final RedirectStrategy redirectStrategy) { this.redirectStrategy = redirectStrategy; return this; } /** * Disables automatic redirect handling. */ public final HttpClientBuilder disableRedirectHandling() { redirectHandlingDisabled = true; return this; } /** * Assigns {@link ConnectionBackoffStrategy} instance. */ public final HttpClientBuilder setConnectionBackoffStrategy( final ConnectionBackoffStrategy connectionBackoffStrategy) { this.connectionBackoffStrategy = connectionBackoffStrategy; return this; } /** * Assigns {@link BackoffManager} instance. */ public final HttpClientBuilder setBackoffManager(final BackoffManager backoffManager) { this.backoffManager = backoffManager; return this; } /** * Assigns {@link ServiceUnavailableRetryStrategy} instance. */ public final HttpClientBuilder setServiceUnavailableRetryStrategy( final ServiceUnavailableRetryStrategy serviceUnavailStrategy) { this.serviceUnavailStrategy = serviceUnavailStrategy; return this; } /** * Assigns default {@link CookieStore} instance which will be used for * request execution if not explicitly set in the client execution context. */ public final HttpClientBuilder setDefaultCookieStore(final CookieStore cookieStore) { this.cookieStore = cookieStore; return this; } /** * Assigns default {@link CredentialsProvider} instance which will be used * for request execution if not explicitly set in the client execution * context. */ public final HttpClientBuilder setDefaultCredentialsProvider( final CredentialsProvider credentialsProvider) { this.credentialsProvider = credentialsProvider; return this; } /** * Assigns default {@link org.apache.http.auth.AuthScheme} registry which will * be used for request execution if not explicitly set in the client execution * context. */ public final HttpClientBuilder setDefaultAuthSchemeRegistry( final Lookup authSchemeRegistry) { this.authSchemeRegistry = authSchemeRegistry; return this; } /** * Assigns default {@link org.apache.http.cookie.CookieSpec} registry which will * be used for request execution if not explicitly set in the client execution * context. */ public final HttpClientBuilder setDefaultCookieSpecRegistry( final Lookup cookieSpecRegistry) { this.cookieSpecRegistry = cookieSpecRegistry; return this; } /** * Assigns default {@link RequestConfig} instance which will be used * for request execution if not explicitly set in the client execution * context. */ public final HttpClientBuilder setDefaultRequestConfig(final RequestConfig config) { this.defaultRequestConfig = config; return this; } /** * Use system properties when creating and configuring default * implementations. */ public final HttpClientBuilder useSystemProperties() { systemProperties = true; return this; } /** * For internal use. */ protected ClientExecChain decorateMainExec(final ClientExecChain mainExec) { return mainExec; } /** * For internal use. */ protected ClientExecChain decorateProtocolExec(final ClientExecChain protocolExec) { return protocolExec; } /** * For internal use. */ protected void addCloseable(final Closeable closeable) { if (closeable == null) { return; } if (closeables == null) { closeables = new ArrayList(); } closeables.add(closeable); } private static String[] split(final String s) { if (TextUtils.isBlank(s)) { return null; } return s.split(" *, *"); } public CloseableHttpClient build() { // Create main request executor HttpRequestExecutor requestExec = this.requestExec; if (requestExec == null) { requestExec = new HttpRequestExecutor(); } HttpClientConnectionManager connManager = this.connManager; if (connManager == null) { LayeredConnectionSocketFactory sslSocketFactory = this.sslSocketFactory; if (sslSocketFactory == null) { final String[] supportedProtocols = systemProperties ? split( System.getProperty("https.protocols")) : null; final String[] supportedCipherSuites = systemProperties ? split( System.getProperty("https.cipherSuites")) : null; X509HostnameVerifier hostnameVerifier = this.hostnameVerifier; if (hostnameVerifier == null) { hostnameVerifier = SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER; } if (sslcontext != null) { sslSocketFactory = new SSLConnectionSocketFactory( sslcontext, supportedProtocols, supportedCipherSuites, hostnameVerifier); } else { if (systemProperties) { sslSocketFactory = new SSLConnectionSocketFactory( (SSLSocketFactory) SSLSocketFactory.getDefault(), supportedProtocols, supportedCipherSuites, hostnameVerifier); } else { sslSocketFactory = new SSLConnectionSocketFactory( SSLContexts.createDefault(), hostnameVerifier); } } } @SuppressWarnings("resource") final PoolingHttpClientConnectionManager poolingmgr = new PoolingHttpClientConnectionManager( RegistryBuilder.create() .register("http", PlainConnectionSocketFactory.getSocketFactory()) .register("https", sslSocketFactory) .build()); if (defaultSocketConfig != null) { poolingmgr.setDefaultSocketConfig(defaultSocketConfig); } if (defaultConnectionConfig != null) { poolingmgr.setDefaultConnectionConfig(defaultConnectionConfig); } if (systemProperties) { String s = System.getProperty("http.keepAlive", "true"); if ("true".equalsIgnoreCase(s)) { s = System.getProperty("http.maxConnections", "5"); final int max = Integer.parseInt(s); poolingmgr.setDefaultMaxPerRoute(max); poolingmgr.setMaxTotal(2 * max); } } if (maxConnTotal > 0) { poolingmgr.setMaxTotal(maxConnTotal); } if (maxConnPerRoute > 0) { poolingmgr.setDefaultMaxPerRoute(maxConnPerRoute); } connManager = poolingmgr; } ConnectionReuseStrategy reuseStrategy = this.reuseStrategy; if (reuseStrategy == null) { if (systemProperties) { final String s = System.getProperty("http.keepAlive", "true"); if ("true".equalsIgnoreCase(s)) { reuseStrategy = DefaultConnectionReuseStrategy.INSTANCE; } else { reuseStrategy = NoConnectionReuseStrategy.INSTANCE; } } else { reuseStrategy = DefaultConnectionReuseStrategy.INSTANCE; } } ConnectionKeepAliveStrategy keepAliveStrategy = this.keepAliveStrategy; if (keepAliveStrategy == null) { keepAliveStrategy = DefaultConnectionKeepAliveStrategy.INSTANCE; } AuthenticationStrategy targetAuthStrategy = this.targetAuthStrategy; if (targetAuthStrategy == null) { targetAuthStrategy = TargetAuthenticationStrategy.INSTANCE; } AuthenticationStrategy proxyAuthStrategy = this.proxyAuthStrategy; if (proxyAuthStrategy == null) { proxyAuthStrategy = ProxyAuthenticationStrategy.INSTANCE; } UserTokenHandler userTokenHandler = this.userTokenHandler; if (userTokenHandler == null) { if (!connectionStateDisabled) { userTokenHandler = DefaultUserTokenHandler.INSTANCE; } else { userTokenHandler = NoopUserTokenHandler.INSTANCE; } } ClientExecChain execChain = new MainClientExec( requestExec, connManager, reuseStrategy, keepAliveStrategy, targetAuthStrategy, proxyAuthStrategy, userTokenHandler); execChain = decorateMainExec(execChain); HttpProcessor httpprocessor = this.httpprocessor; if (httpprocessor == null) { String userAgent = this.userAgent; if (userAgent == null) { if (systemProperties) { userAgent = System.getProperty("http.agent"); } if (userAgent == null) { userAgent = DEFAULT_USER_AGENT; } } final HttpProcessorBuilder b = HttpProcessorBuilder.create(); if (requestFirst != null) { for (final HttpRequestInterceptor i: requestFirst) { b.addFirst(i); } } if (responseFirst != null) { for (final HttpResponseInterceptor i: responseFirst) { b.addFirst(i); } } b.addAll( new RequestDefaultHeaders(defaultHeaders), new RequestContent(), new RequestTargetHost(), new RequestClientConnControl(), new RequestUserAgent(userAgent), new RequestExpectContinue()); if (!cookieManagementDisabled) { b.add(new RequestAddCookies()); } if (!contentCompressionDisabled) { b.add(new RequestAcceptEncoding()); } if (!authCachingDisabled) { b.add(new RequestAuthCache()); } if (!cookieManagementDisabled) { b.add(new ResponseProcessCookies()); } if (!contentCompressionDisabled) { b.add(new ResponseContentEncoding()); } if (requestLast != null) { for (final HttpRequestInterceptor i: requestLast) { b.addLast(i); } } if (responseLast != null) { for (final HttpResponseInterceptor i: responseLast) { b.addLast(i); } } httpprocessor = b.build(); } execChain = new ProtocolExec(execChain, httpprocessor); execChain = decorateProtocolExec(execChain); // Add request retry executor, if not disabled if (!automaticRetriesDisabled) { HttpRequestRetryHandler retryHandler = this.retryHandler; if (retryHandler == null) { retryHandler = DefaultHttpRequestRetryHandler.INSTANCE; } execChain = new RetryExec(execChain, retryHandler); } HttpRoutePlanner routePlanner = this.routePlanner; if (routePlanner == null) { SchemePortResolver schemePortResolver = this.schemePortResolver; if (schemePortResolver == null) { schemePortResolver = DefaultSchemePortResolver.INSTANCE; } if (proxy != null) { routePlanner = new DefaultProxyRoutePlanner(proxy, schemePortResolver); } else if (systemProperties) { routePlanner = new SystemDefaultRoutePlanner( schemePortResolver, ProxySelector.getDefault()); } else { routePlanner = new DefaultRoutePlanner(schemePortResolver); } } // Add redirect executor, if not disabled if (!redirectHandlingDisabled) { RedirectStrategy redirectStrategy = this.redirectStrategy; if (redirectStrategy == null) { redirectStrategy = DefaultRedirectStrategy.INSTANCE; } execChain = new RedirectExec(execChain, routePlanner, redirectStrategy); } // Optionally, add service unavailable retry executor final ServiceUnavailableRetryStrategy serviceUnavailStrategy = this.serviceUnavailStrategy; if (serviceUnavailStrategy != null) { execChain = new ServiceUnavailableRetryExec(execChain, serviceUnavailStrategy); } // Optionally, add connection back-off executor final BackoffManager backoffManager = this.backoffManager; final ConnectionBackoffStrategy connectionBackoffStrategy = this.connectionBackoffStrategy; if (backoffManager != null && connectionBackoffStrategy != null) { execChain = new BackoffStrategyExec(execChain, connectionBackoffStrategy, backoffManager); } Lookup authSchemeRegistry = this.authSchemeRegistry; if (authSchemeRegistry == null) { authSchemeRegistry = RegistryBuilder.create() .register(AuthSchemes.BASIC, new BasicSchemeFactory()) .register(AuthSchemes.DIGEST, new DigestSchemeFactory()) .register(AuthSchemes.NTLM, new NTLMSchemeFactory()) .register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory()) .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory()) .build(); } Lookup cookieSpecRegistry = this.cookieSpecRegistry; if (cookieSpecRegistry == null) { cookieSpecRegistry = RegistryBuilder.create() .register(CookieSpecs.BEST_MATCH, new BestMatchSpecFactory()) .register(CookieSpecs.STANDARD, new RFC2965SpecFactory()) .register(CookieSpecs.BROWSER_COMPATIBILITY, new BrowserCompatSpecFactory()) .register(CookieSpecs.NETSCAPE, new NetscapeDraftSpecFactory()) .register(CookieSpecs.IGNORE_COOKIES, new IgnoreSpecFactory()) .register("rfc2109", new RFC2109SpecFactory()) .register("rfc2965", new RFC2965SpecFactory()) .build(); } CookieStore defaultCookieStore = this.cookieStore; if (defaultCookieStore == null) { defaultCookieStore = new BasicCookieStore(); } CredentialsProvider defaultCredentialsProvider = this.credentialsProvider; if (defaultCredentialsProvider == null) { if (systemProperties) { defaultCredentialsProvider = new SystemDefaultCredentialsProvider(); } else { defaultCredentialsProvider = new BasicCredentialsProvider(); } } return new InternalHttpClient( execChain, connManager, routePlanner, cookieSpecRegistry, authSchemeRegistry, defaultCookieStore, defaultCredentialsProvider, defaultRequestConfig != null ? defaultRequestConfig : RequestConfig.DEFAULT, closeables != null ? new ArrayList(closeables) : null); } }





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