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* 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
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*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
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*
* This software consists of voluntary contributions made by many
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package org.apache.http.impl.client.integration;
import java.net.InetSocketAddress;
import java.util.concurrent.TimeUnit;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.localserver.LocalServerTestBase;
import org.apache.http.localserver.LocalTestServer;
import org.apache.http.util.EntityUtils;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;
public class TestIdleConnectionEviction extends LocalServerTestBase {
@Before
public void setUp() throws Exception {
this.localServer = new LocalTestServer(null, null);
this.localServer.registerDefaultHandlers();
this.localServer.start();
}
@Test
@Ignore("We have a concurrency bug in HttpCore which will be addressed after HttpClient 4.3.2 is released")
public void testIdleConnectionEviction() throws Exception {
final PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
cm.setDefaultMaxPerRoute(10);
cm.setMaxTotal(50);
final HttpClient httpclient = HttpClients.custom().setConnectionManager(cm).build();
final IdleConnectionMonitor idleConnectionMonitor = new IdleConnectionMonitor(cm);
idleConnectionMonitor.start();
final InetSocketAddress address = this.localServer.getServiceAddress();
final HttpHost target = new HttpHost(address.getHostName(), address.getPort());
final HttpGet httpget = new HttpGet("/random/1024");
final WorkerThread[] workers = new WorkerThread[5];
for (int i = 0; i < workers.length; i++) {
workers[i] = new WorkerThread(httpclient, target, httpget, 200);
}
for (final WorkerThread worker : workers) {
worker.start();
}
for (final WorkerThread worker : workers) {
worker.join();
final Exception ex = worker.getException();
if (ex != null) {
throw ex;
}
}
idleConnectionMonitor.shutdown();
}
static class WorkerThread extends Thread {
private final HttpClient httpclient;
private final HttpHost target;
private final HttpUriRequest request;
private final int count;
private volatile Exception ex;
public WorkerThread(
final HttpClient httpclient,
final HttpHost target,
final HttpUriRequest request,
final int count) {
super();
this.httpclient = httpclient;
this.target = target;
this.request = request;
this.count = count;
}
@Override
public void run() {
try {
for (int i = 0; i < this.count; i++) {
final HttpResponse response = this.httpclient.execute(this.target, this.request);
final int status = response.getStatusLine().getStatusCode();
if (status != 200) {
this.request.abort();
throw new ClientProtocolException("Unexpected status code: " + status);
}
EntityUtils.consume(response.getEntity());
Thread.sleep(10);
}
} catch (final Exception ex) {
this.ex = ex;
}
}
public Exception getException() {
return ex;
}
}
public static class IdleConnectionMonitor extends Thread {
private final HttpClientConnectionManager cm;
private volatile boolean shutdown;
public IdleConnectionMonitor(final HttpClientConnectionManager cm) {
super();
this.cm = cm;
setDaemon(true);
}
@Override
public void run() {
try {
while (!this.shutdown) {
synchronized (this) {
wait(250);
this.cm.closeIdleConnections(1, TimeUnit.MILLISECONDS);
}
}
} catch (final InterruptedException ex) {
// terminate
}
}
public void shutdown() {
this.shutdown = true;
synchronized (this) {
notifyAll();
}
}
}
}