Synchronous REST Client calls fail with IllegalStateException: Response has been closed #48927
Description
Describe the bug
After fixes introduced in #48907 and #48807 synchronous REST client calls started failing with:
java.lang.IllegalStateException: Response has been closed
This occurs only in synchronous client calls that perform blocking operations. Asynchronous calls remain unaffected.
Expected behavior
Synchronous REST client calls should work as before, without throwing IllegalStateException, and tests should pass.
Actual behavior
Synchronous REST client calls fail with HTTP 500, due to IllegalStateException caused by the response being prematurely closed.
2025-07-15T04:07:49.6901640Z 04:07:49,631 INFO ## Running test HttpVersionIT.testHttpAsyncResponseWithSingleClientOnGlobalClient()
2025-07-15T04:07:50.6972200Z 04:07:50,690 INFO [app] 04:07:49,476 HTTP Request to /http2/https-synchronous-for-client-with-key failed, error id: b77ce16c-d153-4ae3-ac27-7ce10e50d7f8-1: java.lang.IllegalStateException: Response has been closed
2025-07-15T04:07:50.6973848Z 04:07:50,690 INFO [app] at org.jboss.resteasy.reactive.common.jaxrs.ResponseImpl.checkClosed(ResponseImpl.java:190)
2025-07-15T04:07:50.6974569Z 04:07:50,690 INFO [app] at org.jboss.resteasy.reactive.common.jaxrs.ResponseImpl.getEntity(ResponseImpl.java:88)
2025-07-15T04:07:50.6975291Z 04:07:50,690 INFO [app] at org.jboss.resteasy.reactive.server.handlers.ResponseHandler.handle(ResponseHandler.java:48)
2025-07-15T04:07:50.6976569Z 04:07:50,690 INFO [app] at io.quarkus.resteasy.reactive.server.runtime.QuarkusResteasyReactiveRequestContext.invokeHandler(QuarkusResteasyReactiveRequestContext.java:145)
2025-07-15T04:07:50.6977905Z 04:07:50,690 INFO [app] at org.jboss.resteasy.reactive.common.core.AbstractResteasyReactiveContext.run(AbstractResteasyReactiveContext.java:147)
2025-07-15T04:07:50.6978703Z 04:07:50,690 INFO [app] at io.quarkus.vertx.core.runtime.VertxCoreRecorder$15.runWith(VertxCoreRecorder.java:645)
2025-07-15T04:07:50.6979358Z 04:07:50,691 INFO [app] at org.jboss.threads.EnhancedQueueExecutor$Task.doRunWith(EnhancedQueueExecutor.java:2651)
2025-07-15T04:07:50.6979998Z 04:07:50,691 INFO [app] at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2630)
2025-07-15T04:07:50.6980642Z 04:07:50,691 INFO [app] at org.jboss.threads.EnhancedQueueExecutor.runThreadBody(EnhancedQueueExecutor.java:1622)
2025-07-15T04:07:50.6981298Z 04:07:50,691 INFO [app] at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1589)
2025-07-15T04:07:50.6981898Z 04:07:50,691 INFO [app] at org.jboss.threads.DelegatingRunnable.run(DelegatingRunnable.java:11)
2025-07-15T04:07:50.6982518Z 04:07:50,691 INFO [app] at org.jboss.threads.ThreadLocalResettingRunnable.run(ThreadLocalResettingRunnable.java:11)
2025-07-15T04:07:50.6983199Z 04:07:50,691 INFO [app] at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
2025-07-15T04:07:50.6983733Z 04:07:50,691 INFO [app] at java.base/java.lang.Thread.run(Thread.java:1583)
How to Reproduce?
git clone git@github.com:quarkus-qe/quarkus-test-suite.gitcd quarkus-test-suite/http/rest-client-reactivemvn clean verify -Dit.test=HttpVersionAlpnIT,HttpVersionAlpnWithConfigKeyIT,HttpVersionIT,HttpVersionWithConfigKeyIT -Dreruns=0 -fae
Output of uname -a or ver
Linux fedora 6.13.9-200.fc41.x86_64
Output of java -version
OpenJDK 64-Bit Server VM Temurin-21.0.7+6 (build 21.0.7+6-LTS, mixed mode, sharing)
Quarkus version or git rev
999-SNAPSHOT
Build tool (ie. output of mvnw --version or gradlew --version)
Apache Maven 3.9.6 (Red Hat 3.9.6-7)
Additional information
No response