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* version 2 for more details (a copy is included in the LICENSE file that
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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
* @summary Tests an asynchronous BodySubscriber that completes
* immediately with a Publisher<List<ByteBuffer>>
* @library /lib/testlibrary http2/server
* @build jdk.testlibrary.SimpleSSLContext
* @modules java.base/sun.net.www.http
* java.net.http/jdk.internal.net.http.common
* java.net.http/jdk.internal.net.http.frame
* java.net.http/jdk.internal.net.http.hpack
* @run testng/othervm ResponsePublisher
*/
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import com.sun.net.httpserver.HttpsConfigurator;
import com.sun.net.httpserver.HttpsServer;
import jdk.testlibrary.SimpleSSLContext;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.io.InputStream;
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.HttpHeaders;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandler;
import java.net.http.HttpResponse.BodySubscriber;
import java.net.http.HttpResponse.BodySubscribers;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.Flow;
import java.util.concurrent.Flow.Publisher;
import java.util.concurrent.atomic.AtomicReference;
import static java.lang.System.out;
import static java.nio.charset.StandardCharsets.UTF_8;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNotNull;
import static org.testng.Assert.assertTrue;
public class ResponsePublisher {
SSLContext sslContext;
HttpServer httpTestServer; // HTTP/1.1 [ 4 servers ]
HttpsServer httpsTestServer; // HTTPS/1.1
Http2TestServer http2TestServer; // HTTP/2 ( h2c )
Http2TestServer https2TestServer; // HTTP/2 ( h2 )
String httpURI_fixed;
String httpURI_chunk;
String httpsURI_fixed;
String httpsURI_chunk;
String http2URI_fixed;
String http2URI_chunk;
String https2URI_fixed;
String https2URI_chunk;
static final int ITERATION_COUNT = 10;
// a shared executor helps reduce the amount of threads created by the test
static final Executor executor = Executors.newCachedThreadPool();
@DataProvider(name = "variants")
public Object[][] variants() {
return new Object[][]{
{ httpURI_fixed, false },
{ httpURI_chunk, false },
{ httpsURI_fixed, false },
{ httpsURI_chunk, false },
{ http2URI_fixed, false },
{ http2URI_chunk, false },
{ https2URI_fixed, false,},
{ https2URI_chunk, false },
{ httpURI_fixed, true },
{ httpURI_chunk, true },
{ httpsURI_fixed, true },
{ httpsURI_chunk, true },
{ http2URI_fixed, true },
{ http2URI_chunk, true },
{ https2URI_fixed, true,},
{ https2URI_chunk, true },
};
}
HttpClient newHttpClient() {
return HttpClient.newBuilder()
.executor(executor)
.sslContext(sslContext)
.build();
}
@Test(dataProvider = "variants")
public void testNoBody(String uri, boolean sameClient) throws Exception {
HttpClient client = null;
for (int i=0; i< ITERATION_COUNT; i++) {
if (!sameClient || client == null)
client = newHttpClient();
HttpRequest req = HttpRequest.newBuilder(URI.create(uri))
.build();
BodyHandler<Publisher<List<ByteBuffer>>> handler = new PublishingBodyHandler();
HttpResponse<Publisher<List<ByteBuffer>>> response = client.send(req, handler);
// We can reuse our BodySubscribers implementations to subscribe to the
// Publisher<List<ByteBuffer>>
BodySubscriber<String> ofString = BodySubscribers.ofString(UTF_8);
// get the Publisher<List<ByteBuffer>> and
// subscribe to it.
response.body().subscribe(ofString);
// Get the final result and compare it with the expected body
String body = ofString.getBody().toCompletableFuture().get();
assertEquals(body, "");
}
}
@Test(dataProvider = "variants")
public void testNoBodyAsync(String uri, boolean sameClient) throws Exception {
HttpClient client = null;
for (int i=0; i< ITERATION_COUNT; i++) {
if (!sameClient || client == null)
client = newHttpClient();
HttpRequest req = HttpRequest.newBuilder(URI.create(uri))
.build();
BodyHandler<Publisher<List<ByteBuffer>>> handler = new PublishingBodyHandler();
// We can reuse our BodySubscribers implementations to subscribe to the
// Publisher<List<ByteBuffer>>
BodySubscriber<String> ofString = BodySubscribers.ofString(UTF_8);
CompletableFuture<String> result =
client.sendAsync(req, handler).thenCompose(
(responsePublisher) -> {
// get the Publisher<List<ByteBuffer>> and
// subscribe to it.
responsePublisher.body().subscribe(ofString);
return ofString.getBody();
});
// Get the final result and compare it with the expected body
assertEquals(result.get(), "");
}
}
@Test(dataProvider = "variants")
public void testAsString(String uri, boolean sameClient) throws Exception {
HttpClient client = null;
for (int i=0; i< ITERATION_COUNT; i++) {
if (!sameClient || client == null)
client = newHttpClient();
HttpRequest req = HttpRequest.newBuilder(URI.create(uri+"/withBody"))
.build();
BodyHandler<Publisher<List<ByteBuffer>>> handler = new PublishingBodyHandler();
HttpResponse<Publisher<List<ByteBuffer>>> response = client.send(req, handler);
// We can reuse our BodySubscribers implementations to subscribe to the
// Publisher<List<ByteBuffer>>
BodySubscriber<String> ofString = BodySubscribers.ofString(UTF_8);
// get the Publisher<List<ByteBuffer>> and
// subscribe to it.
response.body().subscribe(ofString);
// Get the final result and compare it with the expected body
String body = ofString.getBody().toCompletableFuture().get();
assertEquals(body, WITH_BODY);
}
}
@Test(dataProvider = "variants")
public void testAsStringAsync(String uri, boolean sameClient) throws Exception {
HttpClient client = null;
for (int i=0; i< ITERATION_COUNT; i++) {
if (!sameClient || client == null)
client = newHttpClient();
HttpRequest req = HttpRequest.newBuilder(URI.create(uri+"/withBody"))
.build();
BodyHandler<Publisher<List<ByteBuffer>>> handler = new PublishingBodyHandler();
// We can reuse our BodySubscribers implementations to subscribe to the
// Publisher<List<ByteBuffer>>
BodySubscriber<String> ofString = BodySubscribers.ofString(UTF_8);
CompletableFuture<String> result = client.sendAsync(req, handler)
.thenCompose((responsePublisher) -> {
// get the Publisher<List<ByteBuffer>> and
// subscribe to it.
responsePublisher.body().subscribe(ofString);
return ofString.getBody();
});
// Get the final result and compare it with the expected body
String body = result.get();
assertEquals(body, WITH_BODY);
}
}
// A BodyHandler that returns PublishingBodySubscriber instances
static class PublishingBodyHandler implements BodyHandler<Publisher<List<ByteBuffer>>> {
@Override
public BodySubscriber<Publisher<List<ByteBuffer>>> apply(int statusCode, HttpHeaders responseHeaders) {
assertEquals(statusCode, 200);
return new PublishingBodySubscriber();
}
}
// A BodySubscriber that returns a Publisher<List<ByteBuffer>>
static class PublishingBodySubscriber implements BodySubscriber<Publisher<List<ByteBuffer>>> {
private final CompletableFuture<Flow.Subscription> subscriptionCF = new CompletableFuture<>();
private final CompletableFuture<Flow.Subscriber<? super List<ByteBuffer>>> subscribedCF = new CompletableFuture<>();
private AtomicReference<Flow.Subscriber<? super List<ByteBuffer>>> subscriberRef = new AtomicReference<>();
private final CompletionStage<Publisher<List<ByteBuffer>>> body =
//subscriptionCF.thenCompose((s) -> CompletableFuture.completedStage(this::subscribe));
CompletableFuture.completedStage(this::subscribe);
private void subscribe(Flow.Subscriber<? super List<ByteBuffer>> subscriber) {
Objects.requireNonNull(subscriber, "subscriber must not be null");
if (subscriberRef.compareAndSet(null, subscriber)) {
subscriptionCF.thenAccept((s) -> {
subscriber.onSubscribe(s);
subscribedCF.complete(subscriber);
});
} else {
subscriber.onSubscribe(new Flow.Subscription() {
@Override public void request(long n) { }
@Override public void cancel() { }
});
subscriber.onError(new IOException("This publisher has already one subscriber"));
}
}
@Override
public void onSubscribe(Flow.Subscription subscription) {
subscriptionCF.complete(subscription);
}
@Override
public void onNext(List<ByteBuffer> item) {
assert subscriptionCF.isDone(); // cannot be called before onSubscribe()
Flow.Subscriber<? super List<ByteBuffer>> subscriber = subscriberRef.get();
assert subscriber != null; // cannot be called before subscriber calls request(1)
subscriber.onNext(item);
}
@Override
public void onError(Throwable throwable) {
assert subscriptionCF.isDone(); // cannot be called before onSubscribe()
// onError can be called before request(1), and therefore can
// be called before subscriberRef is set.
subscribedCF.thenAccept(s -> s.onError(throwable));
}
@Override
public void onComplete() {
assert subscriptionCF.isDone(); // cannot be called before onSubscribe()
// onComplete can be called before request(1), and therefore can
// be called before subscriberRef is set.
subscribedCF.thenAccept(s -> s.onComplete());
}
@Override
public CompletionStage<Publisher<List<ByteBuffer>>> getBody() {
return body;
}
}
static String serverAuthority(HttpServer server) {
return InetAddress.getLoopbackAddress().getHostName() + ":"
+ server.getAddress().getPort();
}
@BeforeTest
public void setup() throws Exception {
sslContext = new SimpleSSLContext().get();
if (sslContext == null)
throw new AssertionError("Unexpected null sslContext");
// HTTP/1.1
HttpHandler h1_fixedLengthHandler = new HTTP1_FixedLengthHandler();
HttpHandler h1_chunkHandler = new HTTP1_ChunkedHandler();
InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
httpTestServer = HttpServer.create(sa, 0);
httpTestServer.createContext("/http1/fixed", h1_fixedLengthHandler);
httpTestServer.createContext("/http1/chunk", h1_chunkHandler);
httpURI_fixed = "http://" + serverAuthority(httpTestServer) + "/http1/fixed";
httpURI_chunk = "http://" + serverAuthority(httpTestServer) + "/http1/chunk";
httpsTestServer = HttpsServer.create(sa, 0);
httpsTestServer.setHttpsConfigurator(new HttpsConfigurator(sslContext));
httpsTestServer.createContext("/https1/fixed", h1_fixedLengthHandler);
httpsTestServer.createContext("/https1/chunk", h1_chunkHandler);
httpsURI_fixed = "https://" + serverAuthority(httpsTestServer) + "/https1/fixed";
httpsURI_chunk = "https://" + serverAuthority(httpsTestServer) + "/https1/chunk";
// HTTP/2
Http2Handler h2_fixedLengthHandler = new HTTP2_FixedLengthHandler();
Http2Handler h2_chunkedHandler = new HTTP2_VariableHandler();
http2TestServer = new Http2TestServer("localhost", false, 0);
http2TestServer.addHandler(h2_fixedLengthHandler, "/http2/fixed");
http2TestServer.addHandler(h2_chunkedHandler, "/http2/chunk");
http2URI_fixed = "http://" + http2TestServer.serverAuthority() + "/http2/fixed";
http2URI_chunk = "http://" + http2TestServer.serverAuthority() + "/http2/chunk";
https2TestServer = new Http2TestServer("localhost", true, 0);
https2TestServer.addHandler(h2_fixedLengthHandler, "/https2/fixed");
https2TestServer.addHandler(h2_chunkedHandler, "/https2/chunk");
https2URI_fixed = "https://" + https2TestServer.serverAuthority() + "/https2/fixed";
https2URI_chunk = "https://" + https2TestServer.serverAuthority() + "/https2/chunk";
httpTestServer.start();
httpsTestServer.start();
http2TestServer.start();
https2TestServer.start();
}
@AfterTest
public void teardown() throws Exception {
httpTestServer.stop(0);
httpsTestServer.stop(0);
http2TestServer.stop();
https2TestServer.stop();
}
static final String WITH_BODY = "Lorem ipsum dolor sit amet, consectetur" +
" adipiscing elit, sed do eiusmod tempor incididunt ut labore et" +
" dolore magna aliqua. Ut enim ad minim veniam, quis nostrud" +
" exercitation ullamco laboris nisi ut aliquip ex ea" +
" commodo consequat. Duis aute irure dolor in reprehenderit in " +
"voluptate velit esse cillum dolore eu fugiat nulla pariatur." +
" Excepteur sint occaecat cupidatat non proident, sunt in culpa qui" +
" officia deserunt mollit anim id est laborum.";
static class HTTP1_FixedLengthHandler implements HttpHandler {
@Override
public void handle(HttpExchange t) throws IOException {
out.println("HTTP1_FixedLengthHandler received request to " + t.getRequestURI());
try (InputStream is = t.getRequestBody()) {
is.readAllBytes();
}
if (t.getRequestURI().getPath().endsWith("/withBody")) {
byte[] bytes = WITH_BODY.getBytes(UTF_8);
t.sendResponseHeaders(200, bytes.length); // body
try (OutputStream os = t.getResponseBody()) {
os.write(bytes);
}
} else {
t.sendResponseHeaders(200, -1); //no body
}
}
}
static class HTTP1_ChunkedHandler implements HttpHandler {
@Override
public void handle(HttpExchange t) throws IOException {
out.println("HTTP1_ChunkedHandler received request to " + t.getRequestURI());
try (InputStream is = t.getRequestBody()) {
is.readAllBytes();
}
t.sendResponseHeaders(200, 0); //chunked
if (t.getRequestURI().getPath().endsWith("/withBody")) {
byte[] bytes = WITH_BODY.getBytes(UTF_8);
try (OutputStream os = t.getResponseBody()) {
os.write(bytes);
}
} else {
t.getResponseBody().close(); // no body
}
}
}
static class HTTP2_FixedLengthHandler implements Http2Handler {
@Override
public void handle(Http2TestExchange t) throws IOException {
out.println("HTTP2_FixedLengthHandler received request to " + t.getRequestURI());
try (InputStream is = t.getRequestBody()) {
is.readAllBytes();
}
if (t.getRequestURI().getPath().endsWith("/withBody")) {
byte[] bytes = WITH_BODY.getBytes(UTF_8);
t.sendResponseHeaders(200, bytes.length); // body
try (OutputStream os = t.getResponseBody()) {
os.write(bytes);
}
} else {
t.sendResponseHeaders(200, -1); //no body
}
}
}
static class HTTP2_VariableHandler implements Http2Handler {
@Override
public void handle(Http2TestExchange t) throws IOException {
out.println("HTTP2_VariableHandler received request to " + t.getRequestURI());
try (InputStream is = t.getRequestBody()) {
is.readAllBytes();
}
t.sendResponseHeaders(200, 0); //chunked
if (t.getRequestURI().getPath().endsWith("/withBody")) {
byte[] bytes = WITH_BODY.getBytes(UTF_8);
try (OutputStream os = t.getResponseBody()) {
os.write(bytes);
}
} else {
t.getResponseBody().close(); // no body
}
}
}
}