java – 使用httpclient的4.0版本

我改变了大部分代码,但坚持使用一些api和方法.我用google搜索了很多但却无法找到相应的代码,我在下面描述：

MultiThreadedHttpConnectionManager的等效性是多少？

我找到了用于httpClient 4.x的PoolingClientConnectionManager,但它在4.0版本中不存在.
这是我对httpversion 3.1的旧代码库

MultiThreadedHttpConnectionManager connMgr = new MultiThreadedHttpConnectionManager();
    m_client = new HttpClient(connMgr);

    /*
     * Maximum concurrent connections that are allowed to a given
     * domain/host
     */
    m_client.getHttpConnectionManager()
            .getParams()
            .setMaxConnectionsPerHost(
                    HostConfiguration.ANY_HOST_CONFIGURATION,maxConcurrentConnections);

    /*
     * 
     * How long to wait before timing out on a http connection
     */
    m_client.getHttpConnectionManager().getParams()
            .setConnectionTimeout(connectionTimeout);

    /*
     * How long to wait before timing out on a socket connection
     */
    m_client.getParams().setSoTimeout(socketTimeout);