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/*
* Copyright (c) 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* 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).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.util.List;
import javax.net.ssl.SNIHostName;
import javax.net.ssl.SNIMatcher;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLParameters;
import com.sun.net.httpserver.HttpsConfigurator;
import com.sun.net.httpserver.HttpsParameters;
import com.sun.net.httpserver.HttpsServer;
import jdk.httpclient.test.lib.common.HttpServerAdapters.HttpTestExchange;
import jdk.httpclient.test.lib.common.HttpServerAdapters.HttpTestHandler;
import jdk.httpclient.test.lib.common.HttpServerAdapters.HttpTestServer;
import jdk.httpclient.test.lib.common.ServerNameMatcher;
import jdk.test.lib.net.SimpleSSLContext;
import jdk.test.lib.net.URIBuilder;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
import static java.nio.charset.StandardCharsets.US_ASCII;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertTrue;
/*
* @test
* @bug 8346705
* @summary verify the behaviour of java.net.http.HttpClient
* when sending a Server Name Indication in the TLS
* connections that it establishes for the requests
* @library /test/lib /test/jdk/java/net/httpclient/lib
* @build jdk.httpclient.test.lib.common.HttpServerAdapters
* jdk.test.lib.net.SimpleSSLContext
* jdk.test.lib.net.URIBuilder
* @run junit HttpClientSNITest
*/
public class HttpClientSNITest {
private static final String RESP_BODY_TEXT = "hello world";
private static final class Handler implements HttpTestHandler {
@Override
public void handle(final HttpTestExchange exch) throws IOException {
System.out.println("handling request " + exch.getRequestURI());
final byte[] respBody = RESP_BODY_TEXT.getBytes(US_ASCII);
exch.sendResponseHeaders(200, respBody.length);
try (final OutputStream os = exch.getResponseBody()) {
os.write(respBody);
}
}
}
/*
* Creates and configures a HTTPS server with a SNIMatcher that
* expects a specific SNI name to be sent by the connection client.
* The test uses a HttpClient to issue a couple of requests with the URI having
* a IP address literal as the host. For one of the request, the HttpClient
* is configured with specific ServerName(s) through HttpClient.sslParameters()
* and for the other request, it isn't.
* The test then verifies that for such requests with a IP address literal as the host,
* the HttpClient sends across the ServerName(s) if any has been configured on the client.
*/
@ParameterizedTest
@ValueSource(booleans = {false, true})
void testRequestToIPLiteralHost(final boolean sniConfiguredOnClient) throws Exception {
final SSLContext sslContext = new SimpleSSLContext().get();
assertNotNull(sslContext, "could not create a SSLContext");
final String expectedSNI = "non-dns-resolvable.foo.bar.localhost";
final ServerNameMatcher matcher = new ServerNameMatcher(expectedSNI);
final HttpTestServer server = createServer(matcher, sslContext);
try {
final HttpClient.Builder builder = HttpClient.newBuilder().sslContext(sslContext);
if (sniConfiguredOnClient) {
final SSLParameters clientConfiguredSSLParams = new SSLParameters();
clientConfiguredSSLParams.setServerNames(List.of(new SNIHostName(expectedSNI)));
builder.sslParameters(clientConfiguredSSLParams);
}
try (final HttpClient client = builder.build()) {
final String ipLiteral = InetAddress.getLoopbackAddress().getHostAddress();
final URI reqURI = URIBuilder.newBuilder()
.host(ipLiteral)
.port(server.getAddress().getPort())
.scheme("https")
.path("/")
.build();
final HttpRequest req = HttpRequest.newBuilder(reqURI).build();
System.out.println("issuing request " + reqURI);
final HttpResponse<String> resp = client.send(req, BodyHandlers.ofString(US_ASCII));
assertEquals(200, resp.statusCode(), "unexpected response status code");
assertEquals(RESP_BODY_TEXT, resp.body(), "unexpected response body");
if (sniConfiguredOnClient) {
assertTrue(matcher.wasInvoked(), "SNIMatcher wasn't invoked on the server");
} else {
assertFalse(matcher.wasInvoked(), "SNIMatcher was unexpectedly invoked" +
" on the server");
}
}
} finally {
System.out.println("stopping server " + server.getAddress());
server.stop();
}
}
/*
* Creates and configures a HTTPS server with a SNIMatcher that
* expects a specific SNI name to be sent by the connection client.
* The test uses a HttpClient to issue a couple of requests with the URI having
* a hostname (i.e. not a IP address literal) as the host. For one of the request,
* the HttpClient is configured with specific ServerName(s) through
* HttpClient.sslParameters() and for the other request, it isn't.
* The test then verifies that for such requests with a hostname
* (i.e. not a IP address literal) in the request URI,
* the HttpClient never sends ServerName(s) that may have been configured on the
* client and instead it sends the hostname (from the request URI) as the ServerName
* for each of the request.
*/
@ParameterizedTest
@ValueSource(booleans = {false, true})
void testRequestResolvedHostName(final boolean sniConfiguredOnClient) throws Exception {
final SSLContext sslContext = new SimpleSSLContext().get();
assertNotNull(sslContext, "could not create a SSLContext");
final String resolvedHostName = InetAddress.getLoopbackAddress().getHostName();
final String expectedSNI = resolvedHostName;
final ServerNameMatcher matcher = new ServerNameMatcher(expectedSNI);
final HttpTestServer server = createServer(matcher, sslContext);
try {
final HttpClient.Builder builder = HttpClient.newBuilder().sslContext(sslContext);
if (sniConfiguredOnClient) {
final SSLParameters clientConfiguredSSLParams = new SSLParameters();
clientConfiguredSSLParams.setServerNames(List.of(new SNIHostName("does-not-matter")));
builder.sslParameters(clientConfiguredSSLParams);
}
try (final HttpClient client = builder.build()) {
final URI reqURI = URIBuilder.newBuilder()
.host(resolvedHostName)
.port(server.getAddress().getPort())
.scheme("https")
.path("/")
.build();
final HttpRequest req = HttpRequest.newBuilder(reqURI).build();
System.out.println("issuing request " + reqURI);
final HttpResponse<String> resp = client.send(req, BodyHandlers.ofString(US_ASCII));
assertEquals(200, resp.statusCode(), "unexpected response status code");
assertEquals(RESP_BODY_TEXT, resp.body(), "unexpected response body");
assertTrue(matcher.wasInvoked(), "SNIMatcher wasn't invoked on the server");
}
} finally {
System.out.println("stopping server " + server.getAddress());
server.stop();
}
}
/*
* Creates a HttpsServer configured to use the given SNIMatcher
*/
private static HttpTestServer createServer(final SNIMatcher matcher,
final SSLContext sslContext) throws Exception {
final InetSocketAddress addr = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
final int backlog = 0;
final HttpsServer httpsServer = HttpsServer.create(addr, backlog);
final HttpsConfigurator configurator = new HttpsConfigurator(sslContext) {
@Override
public void configure(final HttpsParameters params) {
final SSLParameters sslParameters = sslContext.getDefaultSSLParameters();
// add the SNIMatcher
sslParameters.setSNIMatchers(List.of(matcher));
params.setSSLParameters(sslParameters);
System.out.println("configured HttpsServer with SNIMatcher: " + matcher);
}
};
httpsServer.setHttpsConfigurator(configurator);
final HttpTestServer server = HttpTestServer.of(httpsServer);
server.addHandler(new Handler(), "/");
server.start();
System.out.println("server started at " + server.getAddress());
return server;
}
}
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