S3EncryptionClient (not async) Unable to execute HTTP request: headersFuture is still not completed when onStream() is invoked.

The code where I create S3EncryptionClient and call it (3.1.1 library version)

```
private S3EncryptionClient getEncryptionClient(String regionName, KeyPair keyPair) {
return S3EncryptionClient.builder()
.rsaKeyPair(keyPair)
.enableDelayedAuthenticationMode(true)
.enableLegacyUnauthenticatedModes(true)
.enableLegacyWrappingAlgorithms(true)
.wrappedClient(getClient(regionName))
.wrappedAsyncClient(getAsyncClient(regionName))
.build();
}
...
private S3AsyncClient getAsyncClient(String regionName) {
return S3AsyncClient.builder()
.overrideConfiguration(createClientConfiguration())
.region(Region.of(regionName))
.build();
}
..
private ClientOverrideConfiguration createClientConfiguration() {
return S3Client.builder()
.httpClient(
ApacheHttpClient.builder()
.connectionTimeout(Duration.ofMillis(clientConnectionTimeout))
.build())
.overrideConfiguration()
.toBuilder()
.retryPolicy(RetryPolicy.builder().numRetries(NUM_RETRIES).build())
.apiCallAttemptTimeout(Duration.ofMillis(clientRequestTimeout))
.build();
}
...
...
return getInputStream(s3Client.getObject(getGetObjectRequest(storageKey)), isZip);
...
private InputStream getInputStream(ResponseInputStream is, boolean isZip)
throws IOException {
InputStream s3InputStream;
if (isZip) {
ZipInputStream zis = new ZipInputStream(is);
ZipEntry zipEntry = zis.getNextEntry(); // There should be only one entry in the ZIP file

log.debug("getReader: Found zip entry {}", zipEntry.getName());

s3InputStream = zis;
} else {
s3InputStream = is;
}
return s3InputStream;
}
```
The error I see:

```
Caused by: sotware.amazon.encryption.s3.S3EncryptionClientException: Unable to execute HTTP request: headersFuture is still not completed when onStream() is invoked.
at deployment.fs.war//software.amazon.encryption.s3.S3EncryptionClient.getObject(S3EncryptionClient.java:255)

Caused by: software.amazon.awssdk.core.exception.SdkClientException: Unable to execute HTTP request: headersFuture is still not completed when onStream() is invoked.
at deployment.fs.war//software.amazon.awssdk.core.exception.SdkClientException$BuilderImpl.build(SdkClientException.java:111)
at deployment.fs.war//software.amazon.awssdk.core.exception.SdkClientException.create(SdkClientException.java:47)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.utils.RetryableStageHelper.setLastException(RetryableStageHelper.java:223)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.utils.RetryableStageHelper.setLastException(RetryableStageHelper.java:218)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.AsyncRetryableStage$RetryingExecutor.maybeRetryExecute(AsyncRetryableStage.java:182)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.AsyncRetryableStage$RetryingExecutor.lambda$attemptExecute$1(AsyncRetryableStage.java:159)
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
at deployment.fs.war//software.amazon.awssdk.utils.CompletableFutureUtils.lambda$forwardExceptionTo$0(CompletableFutureUtils.java:79)
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.MakeAsyncHttpRequestStage.lambda$execute$0(MakeAsyncHttpRequestStage.java:108)
at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(CompletableFuture.java:859)
at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(CompletableFuture.java:837)
at java.base/java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:506)
at java.base/java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:2088)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.MakeAsyncHttpRequestStage.completeResponseFuture(MakeAsyncHttpRequestStage.java:255)
at deployment.fs.war//software.amazon.awssdk.core.internal.http.pipeline.stages.MakeAsyncHttpRequestStage.lambda$executeHttpRequest$3(MakeAsyncHttpRequestStage.java:167)
at java.base/java.util.concurrent.CompletableFuture.uniHandle(CompletableFuture.java:930)
at java.base/java.util.concurrent.CompletableFuture$UniHandle.tryFire(CompletableFuture.java:907)
at java.base/java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:478)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
```

The question is - why do I see something about the future if I do not use an async client?
How can I correctly get the response and use InputStream here? I can't see any wait/join function to wait

Start at S3EncryptionClient.getObject, identified at line 255 in the stack trace, and compare the wrapped S3Client and S3AsyncClient configuration shown in the report. Reproduce the request with the provided client setup and determine why the synchronous call reaches the headersFuture error; done means the supported response/InputStream usage or a confirmed client defect is established.

Written by the indexing model from the issue text.