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* Copyright ( c ) 2003 , 2022 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
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* under the terms of the GNU General Public License version 2 only , as
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*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
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* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
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*/
/*
* @ test
* @ bug 4696512
* @ summary HTTP client : Improve proxy server configuration and selection
* @ library / test / lib
* @ compile ProxyTest . java
* @ run main / othervm - Dhttp . proxyHost = inexistant - Dhttp . proxyPort = 8080 ProxyTest
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.List;
import java.util.concurrent.Executors;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import jdk.test.lib.net.URIBuilder;
public class ProxyTest {
static HttpServer server;
public ProxyTest() {
}
static public class MyProxySelector extends ProxySelector {
private static volatile URI lastURI;
private final static List<Proxy> NO_PROXY = List.of(Proxy.NO_PROXY);
public java.util.List<Proxy> select(URI uri) {
System.out.println("Selecting no proxy for " + uri);
lastURI = uri;
return NO_PROXY;
}
public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
}
public static URI lastURI() { return lastURI; }
}
public static void main(String[] args) {
ProxySelector defSelector = ProxySelector.getDefault();
if (defSelector == null )
throw new RuntimeException("Default ProxySelector is null" );
ProxySelector.setDefault(new MyProxySelector());
try {
InetAddress loopback = InetAddress.getLoopbackAddress();
server = HttpServer.create(new InetSocketAddress(loopback, 0 ), 10 , "/" , new ProxyTestHandler());
server.setExecutor(Executors.newSingleThreadExecutor());
server.start();
URL url = URIBuilder.newBuilder()
.scheme("http" )
.loopback()
.port(server.getAddress().getPort())
.toURL();
System.out.println("client opening connection to: " + url);
HttpURLConnection urlc = (HttpURLConnection)url.openConnection();
InputStream is = urlc.getInputStream();
is.close();
URI lastURI = MyProxySelector.lastURI();
if (!String.valueOf(lastURI).equals(url + "/" )) {
throw new AssertionError("Custom proxy was not used: last URI was " + lastURI);
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (server != null ) {
server.stop(1 );
}
}
}
}
class ProxyTestHandler implements HttpHandler {
@Override
public void handle(HttpExchange exchange) throws IOException {
try {
exchange.sendResponseHeaders(200 , 0 );
} catch (IOException e) {
e.printStackTrace();
}
try (PrintWriter pw = new PrintWriter(exchange.getResponseBody(), false , Charset.forName("UTF-8" ))) {
pw.print("Hello ." );
}
}
}
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