Java tutorial
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For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package org.apache.http.impl.client; import java.net.ProxySelector; import org.apache.http.ConnectionReuseStrategy; import org.apache.http.annotation.ThreadSafe; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.routing.HttpRoutePlanner; import org.apache.http.impl.DefaultConnectionReuseStrategy; import org.apache.http.impl.NoConnectionReuseStrategy; import org.apache.http.impl.conn.PoolingClientConnectionManager; import org.apache.http.impl.conn.ProxySelectorRoutePlanner; import org.apache.http.impl.conn.SchemeRegistryFactory; import org.apache.http.params.HttpParams; /** * An extension of {@link DefaultHttpClient} pre-configured using system properties. * <p> * The following system properties are taken into account by this class: * <ul> * <li>ssl.TrustManagerFactory.algorithm</li> * <li>javax.net.ssl.trustStoreType</li> * <li>javax.net.ssl.trustStore</li> * <li>javax.net.ssl.trustStoreProvider</li> * <li>javax.net.ssl.trustStorePassword</li> * <li>java.home</li> * <li>ssl.KeyManagerFactory.algorithm</li> * <li>javax.net.ssl.keyStoreType</li> * <li>javax.net.ssl.keyStore</li> * <li>javax.net.ssl.keyStoreProvider</li> * <li>javax.net.ssl.keyStorePassword</li> * <li>http.proxyHost</li> * <li>http.proxyPort</li> * <li>http.nonProxyHosts</li> * <li>http.keepAlive</li> * <li>http.maxConnections</li> * </ul> * <p> * <p> * The following parameters can be used to customize the behavior of this * class: * <ul> * <li>{@link org.apache.http.params.CoreProtocolPNames#PROTOCOL_VERSION}</li> * <li>{@link org.apache.http.params.CoreProtocolPNames#STRICT_TRANSFER_ENCODING}</li> * <li>{@link org.apache.http.params.CoreProtocolPNames#HTTP_ELEMENT_CHARSET}</li> * <li>{@link org.apache.http.params.CoreProtocolPNames#USE_EXPECT_CONTINUE}</li> * <li>{@link org.apache.http.params.CoreProtocolPNames#WAIT_FOR_CONTINUE}</li> * <li>{@link org.apache.http.params.CoreProtocolPNames#USER_AGENT}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#TCP_NODELAY}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#SO_TIMEOUT}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#SO_LINGER}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#SO_REUSEADDR}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#SOCKET_BUFFER_SIZE}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#CONNECTION_TIMEOUT}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#MAX_LINE_LENGTH}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#MAX_HEADER_COUNT}</li> * <li>{@link org.apache.http.params.CoreConnectionPNames#STALE_CONNECTION_CHECK}</li> * <li>{@link org.apache.http.conn.params.ConnRoutePNames#FORCED_ROUTE}</li> * <li>{@link org.apache.http.conn.params.ConnRoutePNames#LOCAL_ADDRESS}</li> * <li>{@link org.apache.http.conn.params.ConnRoutePNames#DEFAULT_PROXY}</li> * <li>{@link org.apache.http.cookie.params.CookieSpecPNames#DATE_PATTERNS}</li> * <li>{@link org.apache.http.cookie.params.CookieSpecPNames#SINGLE_COOKIE_HEADER}</li> * <li>{@link org.apache.http.auth.params.AuthPNames#CREDENTIAL_CHARSET}</li> * <li>{@link org.apache.http.client.params.ClientPNames#COOKIE_POLICY}</li> * <li>{@link org.apache.http.client.params.ClientPNames#HANDLE_AUTHENTICATION}</li> * <li>{@link org.apache.http.client.params.ClientPNames#HANDLE_REDIRECTS}</li> * <li>{@link org.apache.http.client.params.ClientPNames#MAX_REDIRECTS}</li> * <li>{@link org.apache.http.client.params.ClientPNames#ALLOW_CIRCULAR_REDIRECTS}</li> * <li>{@link org.apache.http.client.params.ClientPNames#VIRTUAL_HOST}</li> * <li>{@link org.apache.http.client.params.ClientPNames#DEFAULT_HOST}</li> * <li>{@link org.apache.http.client.params.ClientPNames#DEFAULT_HEADERS}</li> * <li>{@link org.apache.http.client.params.ClientPNames#CONN_MANAGER_TIMEOUT}</li> * </ul> * </p> * * @since 4.2 * * @deprecated (4.3) use {@link HttpClientBuilder} */ @ThreadSafe @Deprecated public class SystemDefaultHttpClient extends DefaultHttpClient { public SystemDefaultHttpClient(final HttpParams params) { super(null, params); } public SystemDefaultHttpClient() { super(null, null); } @Override protected ClientConnectionManager createClientConnectionManager() { final PoolingClientConnectionManager connmgr = new PoolingClientConnectionManager( SchemeRegistryFactory.createSystemDefault()); String s = System.getProperty("http.keepAlive", "true"); if ("true".equalsIgnoreCase(s)) { s = System.getProperty("http.maxConnections", "5"); final int max = Integer.parseInt(s); connmgr.setDefaultMaxPerRoute(max); connmgr.setMaxTotal(2 * max); } return connmgr; } @Override protected HttpRoutePlanner createHttpRoutePlanner() { return new ProxySelectorRoutePlanner(getConnectionManager().getSchemeRegistry(), ProxySelector.getDefault()); } @Override protected ConnectionReuseStrategy createConnectionReuseStrategy() { final String s = System.getProperty("http.keepAlive", "true"); if ("true".equalsIgnoreCase(s)) { return new DefaultConnectionReuseStrategy(); } else { return new NoConnectionReuseStrategy(); } } }