http-client-branch: type paramater review of generic methods http-client-branch
authorchegar
Tue, 20 Feb 2018 14:52:06 +0000
branchhttp-client-branch
changeset 56159 039ab5a71a5c
parent 56157 3f29747a858a
child 56160 f1b75e394b68
http-client-branch: type paramater review of generic methods
src/java.net.http/share/classes/java/net/http/HttpResponse.java
src/java.net.http/share/classes/jdk/internal/net/http/LineSubscriberAdapter.java
src/java.net.http/share/classes/jdk/internal/net/http/ResponseSubscribers.java
test/jdk/java/net/httpclient/FlowAdaptersCompileOnly.java
test/jdk/java/net/httpclient/LineAdaptersCompileOnly.java
test/jdk/java/net/httpclient/MappedResponseSubscriber.java
test/jdk/java/net/httpclient/MappingResponseSubscriber.java
--- a/src/java.net.http/share/classes/java/net/http/HttpResponse.java	Tue Feb 20 10:16:00 2018 +0000
+++ b/src/java.net.http/share/classes/java/net/http/HttpResponse.java	Tue Feb 20 14:52:06 2018 +0000
@@ -300,7 +300,7 @@
          * @return a response body handler
          */
         public static <S extends Subscriber<? super List<ByteBuffer>>,T> BodyHandler<T>
-        fromSubscriber(S subscriber, Function<S,T> finisher) {
+        fromSubscriber(S subscriber, Function<S,? extends T> finisher) {
             Objects.requireNonNull(subscriber);
             Objects.requireNonNull(finisher);
             return (status, headers) -> BodySubscriber.fromSubscriber(subscriber,
@@ -393,7 +393,7 @@
          */
         public static <S extends Subscriber<? super String>,T> BodyHandler<T>
         fromLineSubscriber(S subscriber,
-                           Function<S,T> finisher,
+                           Function<? super S,? extends T> finisher,
                            String lineSeparator) {
             Objects.requireNonNull(subscriber);
             Objects.requireNonNull(finisher);
@@ -656,6 +656,7 @@
          * BodySubscriber.buffering} with a subscriber obtained from the given
          * downstream handler and the {@code bufferSize} parameter.
          *
+         * @param <T> the response body type
          * @param downstreamHandler the downstream handler
          * @param bufferSize the buffer size parameter passed to {@link
          *        BodySubscriber#buffering(BodySubscriber,int) BodySubscriber.buffering}
@@ -819,13 +820,12 @@
          * @apiNote This method can be used as an adapter between {@code
          * BodySubscriber} and {@code Flow.Subscriber}.
          *
-         * @param <S> the type of the Subscriber
          * @param subscriber the subscriber
          * @return a body subscriber
          */
-        public static <S extends Subscriber<? super List<ByteBuffer>>> BodySubscriber<Void>
-        fromSubscriber(S subscriber) {
-            return new ResponseSubscribers.SubscriberAdapter<S,Void>(subscriber, s -> null);
+        public static BodySubscriber<Void>
+        fromSubscriber(Subscriber<? super List<ByteBuffer>> subscriber) {
+            return new ResponseSubscribers.SubscriberAdapter<>(subscriber, s -> null);
         }
 
         /**
@@ -852,8 +852,8 @@
          */
         public static <S extends Subscriber<? super List<ByteBuffer>>,T> BodySubscriber<T>
         fromSubscriber(S subscriber,
-                       Function<S,T> finisher) {
-            return new ResponseSubscribers.SubscriberAdapter<S,T>(subscriber, finisher);
+                       Function<? super S,? extends T> finisher) {
+            return new ResponseSubscribers.SubscriberAdapter<>(subscriber, finisher);
         }
 
         /**
@@ -874,13 +874,12 @@
          *      fromLineSubscriber(subscriber, s -> null, StandardCharsets.UTF_8, null)
          * }</pre>
          *
-         * @param <S> the type of the Subscriber
          * @param subscriber the subscriber
          * @return a body subscriber
          */
-        public static <S extends Subscriber<? super String>> BodySubscriber<Void>
-        fromLineSubscriber(S subscriber) {
-            return fromLineSubscriber(subscriber, s -> null,
+        public static BodySubscriber<Void>
+        fromLineSubscriber(Subscriber<? super String> subscriber) {
+            return fromLineSubscriber(subscriber,  s -> null,
                     StandardCharsets.UTF_8, null);
         }
 
@@ -914,7 +913,7 @@
          */
         public static <S extends Subscriber<? super String>,T> BodySubscriber<T>
         fromLineSubscriber(S subscriber,
-                           Function<S,T> finisher,
+                           Function<? super S,? extends T> finisher,
                            Charset charset,
                            String lineSeparator) {
             return LineSubscriberAdapter.create(subscriber,
@@ -1123,6 +1122,7 @@
          * <p> The returned subscriber delegates its {@link #getBody()} method
          * to the downstream subscriber.
          *
+         * @param <T> the type of the response body
          * @param downstream the downstream subscriber
          * @param bufferSize the buffer size
          * @return a buffering body subscriber
@@ -1132,7 +1132,7 @@
                                                        int bufferSize) {
              if (bufferSize <= 0)
                  throw new IllegalArgumentException("must be greater than 0");
-             return new BufferingSubscriber<T>(downstream, bufferSize);
+             return new BufferingSubscriber<>(downstream, bufferSize);
          }
 
         /**
@@ -1170,9 +1170,9 @@
          * @return a mapping body subscriber
          */
         public static <T,U> BodySubscriber<U> mapping(BodySubscriber<T> upstream,
-                                                      Function<T, U> mapper)
+                                                      Function<? super T, ? extends U> mapper)
         {
-            return new ResponseSubscribers.MappingSubscriber<T, U>(upstream, mapper);
+            return new ResponseSubscribers.MappingSubscriber<>(upstream, mapper);
         }
     }
 }
--- a/src/java.net.http/share/classes/jdk/internal/net/http/LineSubscriberAdapter.java	Tue Feb 20 10:16:00 2018 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/LineSubscriberAdapter.java	Tue Feb 20 14:52:06 2018 +0000
@@ -53,13 +53,13 @@
         implements BodySubscriber<R> {
     private final CompletableFuture<R> cf = new MinimalFuture<>();
     private final S subscriber;
-    private final Function<S, R> finisher;
+    private final Function<? super S, ? extends R> finisher;
     private final Charset charset;
     private final String eol;
     private volatile LineSubscription downstream;
 
     private LineSubscriberAdapter(S subscriber,
-                                  Function<S, R> finisher,
+                                  Function<? super S, ? extends R> finisher,
                                   Charset charset,
                                   String eol) {
         if (eol != null && eol.isEmpty())
@@ -113,7 +113,7 @@
     }
 
     public static <S extends Subscriber<? super String>, R> LineSubscriberAdapter<S, R>
-    create(S subscriber, Function<S, R> finisher, Charset charset, String eol)
+    create(S subscriber, Function<? super S, ? extends R> finisher, Charset charset, String eol)
     {
         if (eol != null && eol.isEmpty())
             throw new IllegalArgumentException("empty line separator");
--- a/src/java.net.http/share/classes/jdk/internal/net/http/ResponseSubscribers.java	Tue Feb 20 10:16:00 2018 +0000
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/ResponseSubscribers.java	Tue Feb 20 14:52:06 2018 +0000
@@ -523,10 +523,10 @@
     {
         private final CompletableFuture<R> cf = new MinimalFuture<>();
         private final S subscriber;
-        private final Function<S,R> finisher;
+        private final Function<? super S,? extends R> finisher;
         private volatile Subscription subscription;
 
-        public SubscriberAdapter(S subscriber, Function<S,R> finisher) {
+        public SubscriberAdapter(S subscriber, Function<? super S,? extends R> finisher) {
             this.subscriber = Objects.requireNonNull(subscriber);
             this.finisher = Objects.requireNonNull(finisher);
         }
@@ -595,9 +595,10 @@
      */
     public static class MappingSubscriber<T,U> implements BodySubscriber<U> {
         private final BodySubscriber<T> upstream;
-        private final Function<T,U> mapper;
+        private final Function<? super T,? extends U> mapper;
 
-        public MappingSubscriber(BodySubscriber<T> upstream, Function<T,U> mapper) {
+        public MappingSubscriber(BodySubscriber<T> upstream,
+                                 Function<? super T,? extends U> mapper) {
             this.upstream = Objects.requireNonNull(upstream);
             this.mapper = Objects.requireNonNull(mapper);
         }
--- a/test/jdk/java/net/httpclient/FlowAdaptersCompileOnly.java	Tue Feb 20 10:16:00 2018 +0000
+++ b/test/jdk/java/net/httpclient/FlowAdaptersCompileOnly.java	Tue Feb 20 14:52:06 2018 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2018, 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
@@ -104,4 +104,45 @@
         @Override public void onError(Throwable throwable) { }
         @Override public void onComplete() { }
     }
+
+    // ---
+
+    static final Function<ListSubscriber,Integer> f1 = subscriber -> 1;
+    static final Function<ListSubscriber,Number> f2 = subscriber -> 2;
+    static final Function<ListSubscriberX,Integer> f3 = subscriber -> 3;
+    static final Function<ListSubscriberX,Number> f4 = subscriber -> 4;
+
+    static class ListSubscriberX extends ListSubscriber {
+        int getIntegerX() { return 5; }
+    }
+
+    static void makesSureDifferentGenericFunctionSignaturesCompile() {
+        BodyHandler<Integer> bh01 = BodyHandler.fromSubscriber(new ListSubscriber(), s -> 6);
+        BodyHandler<Number>  bh02 = BodyHandler.fromSubscriber(new ListSubscriber(), s -> 7);
+        BodyHandler<Integer> bh03 = BodyHandler.fromSubscriber(new ListSubscriber(), f1);
+        BodyHandler<Number>  bh04 = BodyHandler.fromSubscriber(new ListSubscriber(), f1);
+        BodyHandler<Number>  bh05 = BodyHandler.fromSubscriber(new ListSubscriber(), f2);
+        BodyHandler<Integer> bh06 = BodyHandler.fromSubscriber(new ListSubscriberX(), f1);
+        BodyHandler<Number>  bh07 = BodyHandler.fromSubscriber(new ListSubscriberX(), f1);
+        BodyHandler<Number>  bh08 = BodyHandler.fromSubscriber(new ListSubscriberX(), f2);
+        BodyHandler<Integer> bh09 = BodyHandler.fromSubscriber(new ListSubscriberX(), ListSubscriberX::getIntegerX);
+        BodyHandler<Number>  bh10 = BodyHandler.fromSubscriber(new ListSubscriberX(), ListSubscriberX::getIntegerX);
+        BodyHandler<Integer> bh11 = BodyHandler.fromSubscriber(new ListSubscriberX(), f3);
+        BodyHandler<Number>  bh12 = BodyHandler.fromSubscriber(new ListSubscriberX(), f3);
+        BodyHandler<Number>  bh13 = BodyHandler.fromSubscriber(new ListSubscriberX(), f4);
+
+        BodySubscriber<Integer> bs01 = BodySubscriber.fromSubscriber(new ListSubscriber(), s -> 6);
+        BodySubscriber<Number>  bs02 = BodySubscriber.fromSubscriber(new ListSubscriber(), s -> 7);
+        BodySubscriber<Integer> bs03 = BodySubscriber.fromSubscriber(new ListSubscriber(), f1);
+        BodySubscriber<Number>  bs04 = BodySubscriber.fromSubscriber(new ListSubscriber(), f1);
+        BodySubscriber<Number>  bs05 = BodySubscriber.fromSubscriber(new ListSubscriber(), f2);
+        BodySubscriber<Integer> bs06 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f1);
+        BodySubscriber<Number>  bs07 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f1);
+        BodySubscriber<Number>  bs08 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f2);
+        BodySubscriber<Integer> bs09 = BodySubscriber.fromSubscriber(new ListSubscriberX(), ListSubscriberX::getIntegerX);
+        BodySubscriber<Number>  bs10 = BodySubscriber.fromSubscriber(new ListSubscriberX(), ListSubscriberX::getIntegerX);
+        BodySubscriber<Integer> bs11 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f3);
+        BodySubscriber<Number>  bs12 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f3);
+        BodySubscriber<Number>  bs13 = BodySubscriber.fromSubscriber(new ListSubscriberX(), f4);
+    }
 }
--- a/test/jdk/java/net/httpclient/LineAdaptersCompileOnly.java	Tue Feb 20 10:16:00 2018 +0000
+++ b/test/jdk/java/net/httpclient/LineAdaptersCompileOnly.java	Tue Feb 20 14:52:06 2018 +0000
@@ -21,11 +21,12 @@
  * questions.
  */
 
-import java.nio.charset.StandardCharsets;
 import java.util.concurrent.Flow;
 import java.util.function.Function;
 import java.net.http.HttpResponse.BodyHandler;
 import java.net.http.HttpResponse.BodySubscriber;
+import static java.util.function.Function.identity;
+import static java.nio.charset.StandardCharsets.*;
 
 /*
  * @test
@@ -40,36 +41,27 @@
     }
 
     static void makesSureDifferentGenericSignaturesCompile() {
-
         BodyHandler.fromLineSubscriber(new StringSubscriber());
         BodyHandler.fromLineSubscriber(new CharSequenceSubscriber());
         BodyHandler.fromLineSubscriber(new ObjectSubscriber());
 
-
         BodySubscriber.fromLineSubscriber(new StringSubscriber());
         BodySubscriber.fromLineSubscriber(new CharSequenceSubscriber());
         BodySubscriber.fromLineSubscriber(new ObjectSubscriber());
 
-
-        BodyHandler.fromLineSubscriber(new StringSubscriber(), Function.identity(), "\n");
-        BodyHandler.fromLineSubscriber(new CharSequenceSubscriber(), Function.identity(),  "\r\n");
-        BodyHandler.fromLineSubscriber(new ObjectSubscriber(), Function.identity(), "\n");
-        BodyHandler.fromLineSubscriber(new StringSubscriber(), Function.identity(), null);
-        BodyHandler.fromLineSubscriber(new CharSequenceSubscriber(), Function.identity(),  null);
-        BodyHandler.fromLineSubscriber(new ObjectSubscriber(), Function.identity(), null);
+        BodyHandler.fromLineSubscriber(new StringSubscriber(),       identity(), "\n");
+        BodyHandler.fromLineSubscriber(new CharSequenceSubscriber(), identity(), "\r\n");
+        BodyHandler.fromLineSubscriber(new ObjectSubscriber(),       identity(), "\n");
+        BodyHandler.fromLineSubscriber(new StringSubscriber(),       identity(), null);
+        BodyHandler.fromLineSubscriber(new CharSequenceSubscriber(), identity(), null);
+        BodyHandler.fromLineSubscriber(new ObjectSubscriber(),       identity(), null);
 
-        BodySubscriber.fromLineSubscriber(new StringSubscriber(), Function.identity(),
-                StandardCharsets.UTF_8, "\n");
-        BodySubscriber.fromLineSubscriber(new CharSequenceSubscriber(), Function.identity(),
-                StandardCharsets.UTF_16, "\r\n");
-        BodySubscriber.fromLineSubscriber(new ObjectSubscriber(), Function.identity(),
-                StandardCharsets.US_ASCII, "\n");
-        BodySubscriber.fromLineSubscriber(new StringSubscriber(), Function.identity(),
-                StandardCharsets.UTF_8, null);
-        BodySubscriber.fromLineSubscriber(new CharSequenceSubscriber(), Function.identity(),
-                StandardCharsets.UTF_16, null);
-        BodySubscriber.fromLineSubscriber(new ObjectSubscriber(), Function.identity(),
-                StandardCharsets.US_ASCII, null);
+        BodySubscriber.fromLineSubscriber(new StringSubscriber(),       identity(), UTF_8,    "\n");
+        BodySubscriber.fromLineSubscriber(new CharSequenceSubscriber(), identity(), UTF_16,   "\r\n");
+        BodySubscriber.fromLineSubscriber(new ObjectSubscriber(),       identity(), US_ASCII, "\n");
+        BodySubscriber.fromLineSubscriber(new StringSubscriber(),       identity(), UTF_8,    null);
+        BodySubscriber.fromLineSubscriber(new CharSequenceSubscriber(), identity(), UTF_16,   null);
+        BodySubscriber.fromLineSubscriber(new ObjectSubscriber(),       identity(), US_ASCII, null);
     }
 
     static class StringSubscriber implements Flow.Subscriber<String> {
@@ -92,4 +84,45 @@
         @Override public void onError(Throwable throwable) { }
         @Override public void onComplete() { }
     }
+
+    // ---
+
+    static final Function<StringSubscriber,Integer> f1 = subscriber -> 1;
+    static final Function<StringSubscriber,Number> f2 = subscriber -> 2;
+    static final Function<StringSubscriberX,Integer> f3 = subscriber -> 3;
+    static final Function<StringSubscriberX,Number> f4 = subscriber -> 4;
+
+    static class StringSubscriberX extends StringSubscriber {
+        int getIntegerX() { return 5; }
+    }
+
+    static void makesSureDifferentGenericFunctionSignaturesCompile() {
+        BodyHandler<Integer> bh01 = BodyHandler.fromLineSubscriber(new StringSubscriber(), s -> 6, "\n");
+        BodyHandler<Number>  bh02 = BodyHandler.fromLineSubscriber(new StringSubscriber(), s -> 7, "\n");
+        BodyHandler<Integer> bh03 = BodyHandler.fromLineSubscriber(new StringSubscriber(), f1, "\n");
+        BodyHandler<Number>  bh04 = BodyHandler.fromLineSubscriber(new StringSubscriber(), f1, "\n");
+        BodyHandler<Number>  bh05 = BodyHandler.fromLineSubscriber(new StringSubscriber(), f2, "\n");
+        BodyHandler<Integer> bh06 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f1, "\n");
+        BodyHandler<Number>  bh07 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f1, "\n");
+        BodyHandler<Number>  bh08 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f2, "\n");
+        BodyHandler<Integer> bh09 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), StringSubscriberX::getIntegerX, "\n");
+        BodyHandler<Number>  bh10 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), StringSubscriberX::getIntegerX, "\n");
+        BodyHandler<Integer> bh11 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f3, "\n");
+        BodyHandler<Number>  bh12 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f3, "\n");
+        BodyHandler<Number>  bh13 = BodyHandler.fromLineSubscriber(new StringSubscriberX(), f4, "\n");
+
+        BodySubscriber<Integer> bs01 = BodySubscriber.fromLineSubscriber(new StringSubscriber(), s -> 6, UTF_8, "\n");
+        BodySubscriber<Number>  bs02 = BodySubscriber.fromLineSubscriber(new StringSubscriber(), s -> 7, UTF_8, "\n");
+        BodySubscriber<Integer> bs03 = BodySubscriber.fromLineSubscriber(new StringSubscriber(), f1, UTF_8, "\n");
+        BodySubscriber<Number>  bs04 = BodySubscriber.fromLineSubscriber(new StringSubscriber(), f1, UTF_8, "\n");
+        BodySubscriber<Number>  bs05 = BodySubscriber.fromLineSubscriber(new StringSubscriber(), f2, UTF_8, "\n");
+        BodySubscriber<Integer> bs06 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f1, UTF_8, "\n");
+        BodySubscriber<Number>  bs07 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f1, UTF_8, "\n");
+        BodySubscriber<Number>  bs08 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f2, UTF_8, "\n");
+        BodySubscriber<Integer> bs09 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), StringSubscriberX::getIntegerX, UTF_8, "\n");
+        BodySubscriber<Number>  bs10 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), StringSubscriberX::getIntegerX, UTF_8, "\n");
+        BodySubscriber<Integer> bs11 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f3, UTF_8, "\n");
+        BodySubscriber<Number>  bs12 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f3, UTF_8, "\n");
+        BodySubscriber<Number>  bs13 = BodySubscriber.fromLineSubscriber(new StringSubscriberX(), f4, UTF_8, "\n");
+    }
 }
--- a/test/jdk/java/net/httpclient/MappedResponseSubscriber.java	Tue Feb 20 10:16:00 2018 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,307 +0,0 @@
-/*
- * Copyright (c) 2017, 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.
- */
-
-/*
- * @test
- * @summary Tests mapped response subscriber
- * @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 MappedResponseSubscriber
- */
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.net.InetSocketAddress;
-import java.net.URI;
-import java.nio.ByteBuffer;
-import java.util.List;
-import java.util.concurrent.CompletionStage;
-import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
-import java.util.concurrent.Flow;
-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 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 javax.net.ssl.SSLContext;
-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 static java.lang.System.out;
-import static java.nio.charset.StandardCharsets.UTF_8;
-import static java.net.http.HttpResponse.BodySubscriber.asString;
-import static org.testng.Assert.assertEquals;
-import static org.testng.Assert.assertTrue;
-
-public class MappedResponseSubscriber {
-
-    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 testAsBytes(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<byte[]> handler = new CRSBodyHandler();
-            HttpResponse<byte[]> response = client.send(req, handler);
-            byte[] body = response.body();
-            assertEquals(body, bytes);
-        }
-    }
-
-    static class CRSBodyHandler implements BodyHandler<byte[]> {
-        @Override
-        public BodySubscriber<byte[]> apply(int statusCode, HttpHeaders responseHeaders) {
-            assertEquals(statusCode, 200);
-            return HttpResponse.BodySubscriber.mapping(
-                new CRSBodySubscriber(), (s) -> s.getBytes()
-            );
-        }
-    }
-
-    static class CRSBodySubscriber implements BodySubscriber<String> {
-        private final BodySubscriber<String> asString = asString(UTF_8);
-        volatile boolean onSubscribeCalled;
-
-        @Override
-        public void onSubscribe(Flow.Subscription subscription) {
-            //out.println("onSubscribe ");
-            onSubscribeCalled = true;
-            asString.onSubscribe(subscription);
-        }
-
-        @Override
-        public void onNext(List<ByteBuffer> item) {
-           // out.println("onNext " + item);
-            assertTrue(onSubscribeCalled);
-            asString.onNext(item);
-        }
-
-        @Override
-        public void onError(Throwable throwable) {
-            //out.println("onError");
-            assertTrue(onSubscribeCalled);
-            asString.onError(throwable);
-        }
-
-        @Override
-        public void onComplete() {
-            //out.println("onComplete");
-            assertTrue(onSubscribeCalled, "onComplete called before onSubscribe");
-            asString.onComplete();
-        }
-
-        @Override
-        public CompletionStage<String> getBody() {
-            return asString.getBody();
-        }
-    }
-
-
-    @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("localhost", 0);
-        httpTestServer = HttpServer.create(sa, 0);
-        httpTestServer.createContext("/http1/fixed", h1_fixedLengthHandler);
-        httpTestServer.createContext("/http1/chunk", h1_chunkHandler);
-        httpURI_fixed = "http://127.0.0.1:" + httpTestServer.getAddress().getPort() + "/http1/fixed";
-        httpURI_chunk = "http://127.0.0.1:" + httpTestServer.getAddress().getPort() + "/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://127.0.0.1:" + httpsTestServer.getAddress().getPort() + "/https1/fixed";
-        httpsURI_chunk = "https://127.0.0.1:" + httpsTestServer.getAddress().getPort() + "/https1/chunk";
-
-        // HTTP/2
-        Http2Handler h2_fixedLengthHandler = new HTTP2_FixedLengthHandler();
-        Http2Handler h2_chunkedHandler = new HTTP2_VariableHandler();
-
-        http2TestServer = new Http2TestServer("127.0.0.1", false, 0);
-        http2TestServer.addHandler(h2_fixedLengthHandler, "/http2/fixed");
-        http2TestServer.addHandler(h2_chunkedHandler, "/http2/chunk");
-        int port = http2TestServer.getAddress().getPort();
-        http2URI_fixed = "http://127.0.0.1:" + port + "/http2/fixed";
-        http2URI_chunk = "http://127.0.0.1:" + port + "/http2/chunk";
-
-        https2TestServer = new Http2TestServer("127.0.0.1", true, 0);
-        https2TestServer.addHandler(h2_fixedLengthHandler, "/https2/fixed");
-        https2TestServer.addHandler(h2_chunkedHandler, "/https2/chunk");
-        port = https2TestServer.getAddress().getPort();
-        https2URI_fixed = "https://127.0.0.1:" + port + "/https2/fixed";
-        https2URI_chunk = "https://127.0.0.1:" + port + "/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 byte[] bytes;
-
-    static {
-        bytes = new byte[128 * 1024];
-        int b = 'A';
-
-        for (int i=0; i< bytes.length; i++) {
-            bytes[i] = (byte)b;
-            b = b == 'Z'? 'A' : b + 1;
-        }
-    }
-
-    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();
-            }
-            t.sendResponseHeaders(200, bytes.length);  //no body
-            OutputStream os = t.getResponseBody();
-            os.write(bytes);
-            os.close();
-        }
-    }
-
-    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
-            OutputStream os = t.getResponseBody();
-            os.write(bytes);
-            os.close();
-        }
-    }
-
-    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();
-            }
-            t.sendResponseHeaders(200, 0); // chunked
-            OutputStream os = t.getResponseBody();
-            os.write(bytes);
-            os.close();
-        }
-    }
-
-    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, bytes.length);  //no body
-            OutputStream os = t.getResponseBody();
-            os.write(bytes);
-            os.close();
-        }
-    }
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/MappingResponseSubscriber.java	Tue Feb 20 14:52:06 2018 +0000
@@ -0,0 +1,333 @@
+/*
+ * Copyright (c) 2017, 2018, 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.
+ */
+
+/*
+ * @test
+ * @summary Tests mapped response subscriber
+ * @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 MappingResponseSubscriber
+ */
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetSocketAddress;
+import java.net.URI;
+import java.nio.ByteBuffer;
+import java.util.List;
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.Executor;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Flow;
+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 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.util.function.Function;
+import javax.net.ssl.SSLContext;
+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 static java.lang.System.out;
+import static java.net.http.HttpResponse.BodySubscriber.mapping;
+import static java.nio.charset.StandardCharsets.UTF_8;
+import static java.net.http.HttpResponse.BodySubscriber.asString;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertTrue;
+
+public class MappingResponseSubscriber {
+
+    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 testAsBytes(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<byte[]> handler = new CRSBodyHandler();
+            HttpResponse<byte[]> response = client.send(req, handler);
+            byte[] body = response.body();
+            assertEquals(body, bytes);
+        }
+    }
+
+    static class CRSBodyHandler implements BodyHandler<byte[]> {
+        @Override
+        public BodySubscriber<byte[]> apply(int statusCode, HttpHeaders responseHeaders) {
+            assertEquals(statusCode, 200);
+            return HttpResponse.BodySubscriber.mapping(
+                new CRSBodySubscriber(), (s) -> s.getBytes(UTF_8)
+            );
+        }
+    }
+
+    static class CRSBodySubscriber implements BodySubscriber<String> {
+        private final BodySubscriber<String> asString = asString(UTF_8);
+        volatile boolean onSubscribeCalled;
+
+        @Override
+        public void onSubscribe(Flow.Subscription subscription) {
+            //out.println("onSubscribe ");
+            onSubscribeCalled = true;
+            asString.onSubscribe(subscription);
+        }
+
+        @Override
+        public void onNext(List<ByteBuffer> item) {
+           // out.println("onNext " + item);
+            assertTrue(onSubscribeCalled);
+            asString.onNext(item);
+        }
+
+        @Override
+        public void onError(Throwable throwable) {
+            //out.println("onError");
+            assertTrue(onSubscribeCalled);
+            asString.onError(throwable);
+        }
+
+        @Override
+        public void onComplete() {
+            //out.println("onComplete");
+            assertTrue(onSubscribeCalled, "onComplete called before onSubscribe");
+            asString.onComplete();
+        }
+
+        @Override
+        public CompletionStage<String> getBody() {
+            return asString.getBody();
+        }
+    }
+
+
+    @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("localhost", 0);
+        httpTestServer = HttpServer.create(sa, 0);
+        httpTestServer.createContext("/http1/fixed", h1_fixedLengthHandler);
+        httpTestServer.createContext("/http1/chunk", h1_chunkHandler);
+        httpURI_fixed = "http://127.0.0.1:" + httpTestServer.getAddress().getPort() + "/http1/fixed";
+        httpURI_chunk = "http://127.0.0.1:" + httpTestServer.getAddress().getPort() + "/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://127.0.0.1:" + httpsTestServer.getAddress().getPort() + "/https1/fixed";
+        httpsURI_chunk = "https://127.0.0.1:" + httpsTestServer.getAddress().getPort() + "/https1/chunk";
+
+        // HTTP/2
+        Http2Handler h2_fixedLengthHandler = new HTTP2_FixedLengthHandler();
+        Http2Handler h2_chunkedHandler = new HTTP2_VariableHandler();
+
+        http2TestServer = new Http2TestServer("127.0.0.1", false, 0);
+        http2TestServer.addHandler(h2_fixedLengthHandler, "/http2/fixed");
+        http2TestServer.addHandler(h2_chunkedHandler, "/http2/chunk");
+        int port = http2TestServer.getAddress().getPort();
+        http2URI_fixed = "http://127.0.0.1:" + port + "/http2/fixed";
+        http2URI_chunk = "http://127.0.0.1:" + port + "/http2/chunk";
+
+        https2TestServer = new Http2TestServer("127.0.0.1", true, 0);
+        https2TestServer.addHandler(h2_fixedLengthHandler, "/https2/fixed");
+        https2TestServer.addHandler(h2_chunkedHandler, "/https2/chunk");
+        port = https2TestServer.getAddress().getPort();
+        https2URI_fixed = "https://127.0.0.1:" + port + "/https2/fixed";
+        https2URI_chunk = "https://127.0.0.1:" + port + "/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 byte[] bytes;
+
+    static {
+        bytes = new byte[128 * 1024];
+        int b = 'A';
+
+        for (int i=0; i< bytes.length; i++) {
+            bytes[i] = (byte)b;
+            b = b == 'Z'? 'A' : b + 1;
+        }
+    }
+
+    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();
+            }
+            t.sendResponseHeaders(200, bytes.length);  //no body
+            OutputStream os = t.getResponseBody();
+            os.write(bytes);
+            os.close();
+        }
+    }
+
+    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
+            OutputStream os = t.getResponseBody();
+            os.write(bytes);
+            os.close();
+        }
+    }
+
+    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();
+            }
+            t.sendResponseHeaders(200, 0); // chunked
+            OutputStream os = t.getResponseBody();
+            os.write(bytes);
+            os.close();
+        }
+    }
+
+    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, bytes.length);  //no body
+            OutputStream os = t.getResponseBody();
+            os.write(bytes);
+            os.close();
+        }
+    }
+
+    // -- Compile only. Verifies generic signatures
+
+    static final Function<CharSequence,Integer> f1 = subscriber -> 1;
+    static final Function<CharSequence,Number> f2 = subscriber -> 2;
+    static final Function<String,Integer> f3 = subscriber -> 3;
+    static final Function<String,Number> f4 = subscriber -> 4;
+
+    public void compileOnly() throws Exception {
+        HttpClient client = null;
+        HttpRequest req = null;
+
+        HttpResponse<Integer> r1 = client.send(req, (c,h) -> mapping(asString(UTF_8), s -> 1));
+        HttpResponse<Number>  r2 = client.send(req, (c,h) -> mapping(asString(UTF_8), s -> 1));
+        HttpResponse<String>  r3 = client.send(req, (c,h) -> mapping(asString(UTF_8), s -> "s"));
+        HttpResponse<CharSequence> r4 = client.send(req, (c,h) -> mapping(asString(UTF_8), s -> "s"));
+
+        HttpResponse<Integer> x1 = client.send(req, (c,h) -> mapping(asString(UTF_8), f1));
+        HttpResponse<Number>  x2 = client.send(req, (c,h) -> mapping(asString(UTF_8), f1));
+        HttpResponse<Number>  x3 = client.send(req, (c,h) -> mapping(asString(UTF_8), f2));
+        HttpResponse<Integer> x4 = client.send(req, (c,h) -> mapping(asString(UTF_8), f3));
+        HttpResponse<Number>  x5 = client.send(req, (c,h) -> mapping(asString(UTF_8), f3));
+        HttpResponse<Number>  x7 = client.send(req, (c,h) -> mapping(asString(UTF_8), f4));
+    }
+}