ADDITIONAL SYSTEM INFORMATION :
openjdk version "13-ea" 2019-09-17
OpenJDK Runtime Environment (build 13-ea+6)
OpenJDK 64-Bit Server VM (build 13-ea+6, mixed mode, sharing)

MacOS 10.14.2 Mojave

A DESCRIPTION OF THE PROBLEM :
The documentation for HttpClient states that it will automatically degrade to Http1 when v2 is not supported.

However, when trying to use Spotify's api (which supports some access points in v2, but the majority in v1 [see https://github.com/spotify/web-api/issues/803]) the `Received RST_STREAM: Protocol error` exception is thrown.

Configuring the HttpClient to use version 1.1 resolves the issue.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
HttpClient client = HttpClient.newHttpClient();
String authCode = "..."
HttpRequest req = HttpRequest.newBuilder()
                .uri(URI.create("https://api.spotify.com/v1/tracks/54ucfuN596MU25jQD3KjCL"))
                .header("Authentication", "Bearer " + authCode)
                .GET().build();

System.out.println(client.send(req, BodyHandlers.ofByteArray()).statusCode());

ACTUAL -
java.io.IOException: Received RST_STREAM: Protocol error
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at protocolerr/com.augustnagro.protocolerr.Main.sendReq(Main.java:38)
at protocolerr/com.augustnagro.protocolerr.Main.main(Main.java:27)
Caused by: java.io.IOException: Received RST_STREAM: Protocol error
at java.net.http/jdk.internal.net.http.Stream.handleReset(Stream.java:487)
at java.net.http/jdk.internal.net.http.Stream.schedule(Stream.java:177)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.Stream.receiveResetFrame(Stream.java:330)
at java.net.http/jdk.internal.net.http.Stream.incoming_reset(Stream.java:465)
at java.net.http/jdk.internal.net.http.Stream.otherFrame(Stream.java:401)
at java.net.http/jdk.internal.net.http.Stream.incoming(Stream.java:391)
at java.net.http/jdk.internal.net.http.Http2Connection.processFrame(Http2Connection.java:787)
at java.net.http/jdk.internal.net.http.frame.FramesDecoder.decode(FramesDecoder.java:155)
at java.net.http/jdk.internal.net.http.Http2Connection$FramesController.processReceivedData(Http2Connection.java:232)
at java.net.http/jdk.internal.net.http.Http2Connection.asyncReceive(Http2Connection.java:649)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.processQueue(Http2Connection.java:1275)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.runOrSchedule(Http2Connection.java:1293)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.onNext(Http2Connection.java:1319)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.onNext(Http2Connection.java:1253)
at java.net.http/jdk.internal.net.http.common.SSLTube$DelegateWrapper.onNext(SSLTube.java:202)
at java.net.http/jdk.internal.net.http.common.SSLTube$SSLSubscriberWrapper.onNext(SSLTube.java:484)
at java.net.http/jdk.internal.net.http.common.SSLTube$SSLSubscriberWrapper.onNext(SSLTube.java:287)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper$DownstreamPusher.run1(SubscriberWrapper.java:318)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper$DownstreamPusher.run(SubscriberWrapper.java:261)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper.outgoing(SubscriberWrapper.java:234)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper.outgoing(SubscriberWrapper.java:200)
at java.net.http/jdk.internal.net.http.common.SSLFlowDelegate$Reader.processData(SSLFlowDelegate.java:403)
at java.net.http/jdk.internal.net.http.common.SSLFlowDelegate$Reader$ReaderDownstreamPusher.run(SSLFlowDelegate.java:264)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)
Exception in thread "main" java.util.concurrent.CompletionException: java.io.IOException: Received RST_STREAM: Protocol error
at protocolerr/com.augustnagro.protocolerr.Main.sendReq(Main.java:42)
at protocolerr/com.augustnagro.protocolerr.Main.main(Main.java:27)
Caused by: java.io.IOException: Received RST_STREAM: Protocol error
at java.net.http/jdk.internal.net.http.HttpClientImpl.send(HttpClientImpl.java:576)
at java.net.http/jdk.internal.net.http.HttpClientFacade.send(HttpClientFacade.java:119)
at protocolerr/com.augustnagro.protocolerr.Main.sendReq(Main.java:38)
... 1 more
Caused by: java.io.IOException: Received RST_STREAM: Protocol error
at java.net.http/jdk.internal.net.http.Stream.handleReset(Stream.java:487)
at java.net.http/jdk.internal.net.http.Stream.schedule(Stream.java:177)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.Stream.receiveResetFrame(Stream.java:330)
at java.net.http/jdk.internal.net.http.Stream.incoming_reset(Stream.java:465)
at java.net.http/jdk.internal.net.http.Stream.otherFrame(Stream.java:401)
at java.net.http/jdk.internal.net.http.Stream.incoming(Stream.java:391)
at java.net.http/jdk.internal.net.http.Http2Connection.processFrame(Http2Connection.java:787)
at java.net.http/jdk.internal.net.http.frame.FramesDecoder.decode(FramesDecoder.java:155)
at java.net.http/jdk.internal.net.http.Http2Connection$FramesController.processReceivedData(Http2Connection.java:232)
at java.net.http/jdk.internal.net.http.Http2Connection.asyncReceive(Http2Connection.java:649)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.processQueue(Http2Connection.java:1275)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.runOrSchedule(Http2Connection.java:1293)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.onNext(Http2Connection.java:1319)
at java.net.http/jdk.internal.net.http.Http2Connection$Http2TubeSubscriber.onNext(Http2Connection.java:1253)
at java.net.http/jdk.internal.net.http.common.SSLTube$DelegateWrapper.onNext(SSLTube.java:202)
at java.net.http/jdk.internal.net.http.common.SSLTube$SSLSubscriberWrapper.onNext(SSLTube.java:484)
at java.net.http/jdk.internal.net.http.common.SSLTube$SSLSubscriberWrapper.onNext(SSLTube.java:287)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper$DownstreamPusher.run1(SubscriberWrapper.java:318)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper$DownstreamPusher.run(SubscriberWrapper.java:261)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:271)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler.runOrSchedule(SequentialScheduler.java:224)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper.outgoing(SubscriberWrapper.java:234)
at java.net.http/jdk.internal.net.http.common.SubscriberWrapper.outgoing(SubscriberWrapper.java:200)
at java.net.http/jdk.internal.net.http.common.SSLFlowDelegate$Reader.processData(SSLFlowDelegate.java:403)
at java.net.http/jdk.internal.net.http.common.SSLFlowDelegate$Reader$ReaderDownstreamPusher.run(SSLFlowDelegate.java:264)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SynchronizedRestartableTask.run(SequentialScheduler.java:175)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$CompleteRestartableTask.run(SequentialScheduler.java:147)
at java.net.http/jdk.internal.net.http.common.SequentialScheduler$SchedulableTask.run(SequentialScheduler.java:198)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at java.base/java.lang.Thread.run(Thread.java:835)


---------- BEGIN SOURCE ----------
HttpClient client = HttpClient.newHttpClient();
String authCode = "..."
HttpRequest req = HttpRequest.newBuilder()
                .uri(URI.create("https://api.spotify.com/v1/tracks/54ucfuN596MU25jQD3KjCL"))
                .header("Authentication", "Bearer " + authCode)
                .GET().build();

System.out.println(client.send(req, BodyHandlers.ofByteArray()).statusCode());
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Manually configure HttpClient to use Http1

FREQUENCY : always