com.almende.reaal.apachehttp.ApacheHttpClient.java Source code

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Here is the source code for com.almende.reaal.apachehttp.ApacheHttpClient.java

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/*
 * Copyright: Almende B.V. (2014), Rotterdam, The Netherlands
 * License: The Apache Software License, Version 2.0
 */
package com.almende.reaal.apachehttp;

import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;

import org.apache.http.client.params.ClientPNames;
import org.apache.http.client.params.CookiePolicy;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.AllowAllHostnameVerifier;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.PoolingClientConnectionManager;
import org.apache.http.impl.conn.SchemeRegistryFactory;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.params.HttpParams;

/**
 * The Class ApacheHttpClient.
 */
public final class ApacheHttpClient {
    private static final Logger LOG = Logger.getLogger(ApacheHttpClient.class.getCanonicalName());
    private static DefaultHttpClient httpClient = null;
    static {
        new ApacheHttpClient();
    }

    /**
     * Instantiates a new apache http client.
     *
     */
    private ApacheHttpClient() {

        // Allow self-signed SSL certificates:
        final TrustStrategy trustStrategy = new TrustSelfSignedStrategy();
        final X509HostnameVerifier hostnameVerifier = new AllowAllHostnameVerifier();
        final SchemeRegistry schemeRegistry = SchemeRegistryFactory.createDefault();

        SSLSocketFactory sslSf;
        try {
            sslSf = new SSLSocketFactory(trustStrategy, hostnameVerifier);
            final Scheme https = new Scheme("https", 443, sslSf);
            schemeRegistry.register(https);
        } catch (Exception e) {
            LOG.warning("Couldn't init SSL socket, https not supported!");
        }

        // Work with PoolingClientConnectionManager
        final ClientConnectionManager connection = new PoolingClientConnectionManager(schemeRegistry);

        // Provide eviction thread to clear out stale threads.
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    while (true) {
                        synchronized (this) {
                            wait(5000);
                            connection.closeExpiredConnections();
                            connection.closeIdleConnections(30, TimeUnit.SECONDS);
                        }
                    }
                } catch (final InterruptedException ex) {
                }
            }
        }).start();

        // generate httpclient
        httpClient = new DefaultHttpClient(connection);

        final HttpParams params = httpClient.getParams();

        params.setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.BROWSER_COMPATIBILITY);
        params.setParameter(CoreConnectionPNames.SO_TIMEOUT, 60000);
        params.setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 20000);
        params.setParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false);
        params.setParameter(CoreConnectionPNames.TCP_NODELAY, true);
        httpClient.setParams(params);
    }

    /**
     * Gets the default http client.
     *
     * @return the default http client
     */
    public static DefaultHttpClient get() {
        return httpClient;
    }
}