| /* |
| * ==================================================================== |
| * 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 |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.http.examples.client; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.http.client.methods.CloseableHttpResponse; |
| import org.apache.http.client.methods.HttpGet; |
| import org.apache.http.impl.client.CloseableHttpClient; |
| import org.apache.http.impl.client.HttpClients; |
| import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; |
| import org.apache.http.pool.PoolStats; |
| import org.apache.http.util.EntityUtils; |
| |
| /** |
| * Example demonstrating how to evict expired and idle connections |
| * from the connection pool. |
| */ |
| public class ClientEvictExpiredConnections { |
| |
| public static void main(String[] args) throws Exception { |
| PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager(); |
| cm.setMaxTotal(100); |
| CloseableHttpClient httpclient = HttpClients.custom() |
| .setConnectionManager(cm) |
| .evictExpiredConnections() |
| .evictIdleConnections(5L, TimeUnit.SECONDS) |
| .build(); |
| try { |
| // create an array of URIs to perform GETs on |
| String[] urisToGet = { |
| "http://hc.apache.org/", |
| "http://hc.apache.org/httpcomponents-core-ga/", |
| "http://hc.apache.org/httpcomponents-client-ga/", |
| }; |
| |
| for (int i = 0; i < urisToGet.length; i++) { |
| String requestURI = urisToGet[i]; |
| HttpGet request = new HttpGet(requestURI); |
| |
| System.out.println("Executing request " + requestURI); |
| |
| CloseableHttpResponse response = httpclient.execute(request); |
| try { |
| System.out.println("----------------------------------------"); |
| System.out.println(response.getStatusLine()); |
| System.out.println(EntityUtils.toString(response.getEntity())); |
| } finally { |
| response.close(); |
| } |
| } |
| |
| PoolStats stats1 = cm.getTotalStats(); |
| System.out.println("Connections kept alive: " + stats1.getAvailable()); |
| |
| // Sleep 10 sec and let the connection evictor do its job |
| Thread.sleep(10000); |
| |
| PoolStats stats2 = cm.getTotalStats(); |
| System.out.println("Connections kept alive: " + stats2.getAvailable()); |
| |
| } finally { |
| httpclient.close(); |
| } |
| } |
| |
| } |