Add issue quarkusio#31422 reproducer.

integration-tests/grpc-streaming/src/main/java/io/quarkus/grpc/example/streaming/StreamingService.java

@@ -1,10 +1,13 @@
 package io.quarkus.grpc.example.streaming;
 
 import java.time.Duration;
+import java.util.concurrent.atomic.AtomicInteger;
 
 import io.grpc.examples.streaming.Empty;
 import io.grpc.examples.streaming.Item;
 import io.grpc.examples.streaming.MutinyStreamingGrpc;
+import io.grpc.examples.streaming.StringReply;
+import io.grpc.examples.streaming.StringRequest;
 import io.quarkus.grpc.GrpcService;
 import io.smallrye.mutiny.Multi;
 import io.smallrye.mutiny.Uni;
@@ -36,4 +39,25 @@ public Multi<Item> pipe(Multi<Item> request) {
                 .onItem().scan(() -> 0L, Long::sum)
                 .onItem().transform(l -> Item.newBuilder().setValue(Long.toString(l)).build());
     }
+
+    @Override
+    public Uni<StringReply> stringStream(Multi<StringRequest> request) {
+        AtomicInteger atomicInteger = new AtomicInteger(0);
+        return request
+                //                .call(() -> Uni.createFrom().failure(new RuntimeException("Any error")))
+                .map(x -> {
+                    if (atomicInteger.get() == 30) {
+                        throw new RuntimeException("We reached 30, error here");
+                    }
+                    return StringReply.newBuilder()
+                            .setMessage(x.toString())
+                            .build();
+                })
+                .collect().asList()
+                .replaceWith(StringReply.newBuilder()
+                        .setMessage("DONE")
+                        .build())
+                .onFailure()
+                .invoke(th -> System.err.println(th.getMessage()));
+    }
 }

integration-tests/grpc-streaming/src/main/proto/streaming.proto

@@ -12,11 +12,20 @@ service Streaming {
     rpc Source(Empty) returns (stream Item) {}
     rpc Sink(stream Item) returns (Empty) {}
     rpc Pipe(stream Item) returns (stream Item) {}
+    rpc StringStream (stream StringRequest) returns (StringReply) {}
 }
 
 message Item {
     string value = 1;
 }
 
 message Empty {
-}
+}
+
+message StringRequest {
+    string anyValue = 1;
+}
+
+message StringReply {
+    string message = 1;
+}

integration-tests/grpc-streaming/src/main/resources/application.properties

@@ -4,3 +4,12 @@ quarkus.grpc.clients.streaming.port=9001
 %vertx.quarkus.grpc.clients.streaming.port=8081
 %vertx.quarkus.grpc.clients.streaming.use-quarkus-grpc-client=true
 %vertx.quarkus.grpc.server.use-separate-server=false
+
+%n2o.quarkus.grpc.server.use-separate-server=true
+%o2n.quarkus.grpc.server.use-separate-server=false
+
+%n2o.quarkus.grpc.clients.streaming.port=9001
+%n2o.quarkus.grpc.clients.streaming.use-quarkus-grpc-client=true
+
+%o2n.quarkus.grpc.clients.streaming.port=8081
+%o2n.quarkus.grpc.clients.streaming.use-quarkus-grpc-client=false

integration-tests/grpc-streaming/src/test/java/io/quarkus/grpc/example/streaming/LongStreamTest.java

@@ -0,0 +1,7 @@
+package io.quarkus.grpc.example.streaming;
+
+import io.quarkus.test.junit.QuarkusTest;
+
+@QuarkusTest
+public class LongStreamTest extends LongStreamTestBase {
+}

integration-tests/grpc-streaming/src/test/java/io/quarkus/grpc/example/streaming/LongStreamTestBase.java

@@ -0,0 +1,37 @@
+package io.quarkus.grpc.example.streaming;
+
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import io.grpc.examples.streaming.Streaming;
+import io.grpc.examples.streaming.StringRequest;
+import io.quarkus.grpc.GrpcClient;
+import io.smallrye.mutiny.Multi;
+import io.smallrye.mutiny.Uni;
+
+@SuppressWarnings("NewClassNamingConvention")
+public class LongStreamTestBase {
+    private final Logger log = LoggerFactory.getLogger(getClass());
+
+    @GrpcClient("streaming")
+    Streaming streamSvc;
+
+    @Test
+    public void testFailure() {
+        Multi<StringRequest> multi = Multi.createFrom().range(1, 10000)
+                // delaying stream to make it a bit longer
+                .call(() -> Uni.createFrom().nullItem().onItem().delayIt().by(Duration.of(1000, ChronoUnit.NANOS)))
+                .map(x -> StringRequest.newBuilder()
+                        .setAnyValue(x.toString())
+                        .build())
+                .invoke(x -> log.info("Stream piece number is: " + x.getAnyValue()));
+
+        streamSvc.stringStream(multi)
+                .subscribe().with(ok -> log.info("All is ok: {}", ok), th -> log.error(th.getMessage(), th));
+    }
+
+}

integration-tests/grpc-streaming/src/test/java/io/quarkus/grpc/example/streaming/N2OLongStreamTest.java

@@ -0,0 +1,10 @@
+package io.quarkus.grpc.example.streaming;
+
+import io.quarkus.grpc.test.utils.N2OGRPCTestProfile;
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.junit.TestProfile;
+
+@QuarkusTest
+@TestProfile(N2OGRPCTestProfile.class)
+public class N2OLongStreamTest extends LongStreamTestBase {
+}

integration-tests/grpc-streaming/src/test/java/io/quarkus/grpc/example/streaming/O2NLongStreamTest.java

@@ -0,0 +1,10 @@
+package io.quarkus.grpc.example.streaming;
+
+import io.quarkus.grpc.test.utils.O2NGRPCTestProfile;
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.junit.TestProfile;
+
+@QuarkusTest
+@TestProfile(O2NGRPCTestProfile.class)
+public class O2NLongStreamTest extends LongStreamTestBase {
+}

integration-tests/grpc-streaming/src/test/java/io/quarkus/grpc/example/streaming/VertxLongStreamTest.java

@@ -0,0 +1,10 @@
+package io.quarkus.grpc.example.streaming;
+
+import io.quarkus.grpc.test.utils.VertxGRPCTestProfile;
+import io.quarkus.test.junit.QuarkusTest;
+import io.quarkus.test.junit.TestProfile;
+
+@QuarkusTest
+@TestProfile(VertxGRPCTestProfile.class)
+public class VertxLongStreamTest extends LongStreamTestBase {
+}