Accept multiple tdlib clients

src/main/java/it/tdlight/reactiveapi/rsocket/ConsumerConnection.java

@@ -13,14 +13,18 @@ import reactor.core.publisher.SignalType;
 import reactor.core.publisher.Sinks;
 import reactor.core.publisher.Sinks.EmitFailureHandler;
 import reactor.core.publisher.Sinks.Empty;
+import reactor.core.publisher.Sinks.Many;
 import reactor.core.scheduler.Schedulers;
+import reactor.util.concurrent.Queues;
 
 public class ConsumerConnection<T> {
 
 	private static final Logger LOG = LogManager.getLogger(ConsumerConnection.class);
 
 	private final String channel;
-	private Flux<Payload> remote;
+	private final int bufferSize;
+	private Many<Flux<Payload>> remotes = Sinks.many().replay().all();
+	private int remoteCount = 0;
 
 	private Deserializer<T> local;
 
@@ -29,8 +33,9 @@ public class ConsumerConnection<T> {
 	private Optional<Throwable> localTerminationState = null;
 	private Empty<Void> localTerminationSink = Sinks.empty();
 
-	public ConsumerConnection(String channel) {
+	public ConsumerConnection(String channel, int bufferSize) {
 		this.channel = channel;
+		this.bufferSize = bufferSize;
 		if (LOG.isDebugEnabled()) LOG.debug("{} Create new blank connection", this.printStatus());
 	}
 
@@ -38,7 +43,7 @@ public class ConsumerConnection<T> {
 		return "[\"%s\" (%d)%s%s%s]".formatted(channel,
 				System.identityHashCode(this),
 				local != null ? ", local" : "",
-				remote != null ? ", remote" : "",
+				remoteCount > 0 ? (remoteCount > 1 ? ", " + remoteCount + " remotes" : ", 1 remote") : "",
 				connectedState ? ((localTerminationState != null) ? (localTerminationState.isPresent() ? ", done with error" : ", done") : ", connected") : ", waiting"
 		);
 	}
@@ -52,38 +57,68 @@ public class ConsumerConnection<T> {
 		}).publishOn(Schedulers.parallel()).thenMany(Flux.defer(() -> {
 			synchronized (ConsumerConnection.this) {
 				if (LOG.isDebugEnabled()) LOG.debug("{} Local is connected", this.printStatus());
-				return RSocketUtils.deserialize(remote, local)
+				return Flux.merge(remotes.asFlux().map(remote -> {
+							return remote.doOnError(ex -> {
+								synchronized (ConsumerConnection.this) {
+									if (remoteCount <= 1) {
+										if (remoteCount > 0 && localTerminationState == null) {
+											localTerminationState = Optional.of(ex);
+											if (LOG.isDebugEnabled()) {
+												LOG.debug("%s Local connection ended with failure".formatted(this.printStatus()), ex);
+											}
+											if (remoteCount <= 1) {
+												var sink = localTerminationSink;
+												reset();
+												sink.emitError(ex, EmitFailureHandler.FAIL_FAST);
+												if (LOG.isDebugEnabled()) {
+													LOG.debug("%s Local connection ended with failure, emitted termination failure".formatted(this.printStatus()));
+												}
+											}
+										}
+									} else {
+										remoteCount--;
+										if (LOG.isDebugEnabled()) {
+											LOG.debug("%s Local connection ended with failure, but at least one remote is still online".formatted(
+													this.printStatus()));
+										}
+									}
+								}
+							}).doFinally(s -> {
+								if (s != SignalType.ON_ERROR) {
+									synchronized (ConsumerConnection.this) {
+										if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ending with status {}", this.printStatus(), s);
+										if (remoteCount <= 1) {
+											if (remoteCount > 0 && localTerminationState == null) {
+												assert connectedState;
+												localTerminationState = Optional.empty();
+												if (s == SignalType.CANCEL) {
+													localTerminationSink.emitError(new CancelledChannelException(), EmitFailureHandler.FAIL_FAST);
+												} else {
+													localTerminationSink.emitEmpty(EmitFailureHandler.FAIL_FAST);
+												}
+											}
+											reset();
+											if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, emitted termination complete", this.printStatus(), s);
+										} else {
+											remoteCount--;
+											if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, but at least one remote is still online", this.printStatus(), s);
+										}
+									}
+								}
+							}).onErrorResume(ex -> {
+								synchronized (ConsumerConnection.this) {
+									if (remoteCount <= 1) {
+										return Flux.error(ex);
+									} else {
+										return Flux.empty();
+									}
+								}
+							});
+						}), Integer.MAX_VALUE, bufferSize)
+						.transform(remote -> RSocketUtils.deserialize(remote, local))
 						.map(element -> new Timestamped<>(System.currentTimeMillis(), element));
 			}
-		})).doOnError(ex -> {
+		}));
-			synchronized (ConsumerConnection.this) {
-				if (remote != null && localTerminationState == null) {
-					localTerminationState = Optional.of(ex);
-					if (LOG.isDebugEnabled()) LOG.debug("%s Local connection ended with failure, emitting termination failure".formatted(this.printStatus()), ex);
-					var sink = localTerminationSink;
-					reset(true);
-					sink.emitError(ex, EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
-					if (LOG.isDebugEnabled()) LOG.debug("%s Local connection ended with failure, emitted termination failure".formatted(this.printStatus()));
-				}
-			}
-		}).doFinally(s -> {
-			if (s != SignalType.ON_ERROR) {
-				synchronized (ConsumerConnection.this) {
-					if (remote != null && localTerminationState == null) {
-						assert connectedState;
-						localTerminationState = Optional.empty();
-						LOG.debug("{} Remote connection ended with status {}, emitting termination complete", this::printStatus, () -> s);
-						if (s == SignalType.CANCEL) {
-							localTerminationSink.emitError(new CancelledChannelException(), EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
-						} else {
-							localTerminationSink.emitEmpty(EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
-						}
-						LOG.debug("{} Remote connection ended with status {}, emitted termination complete", this::printStatus, () -> s);
-					}
-					reset(false);
-				}
-			}
-		});
 	}
 
 	public synchronized Mono<Void> connectRemote() {
@@ -97,16 +132,10 @@ public class ConsumerConnection<T> {
 				if (LOG.isDebugEnabled()) LOG.debug("{} Remote is connected", this.printStatus());
 				return localTerminationSink.asMono().publishOn(Schedulers.parallel());
 			}
-		})).doFinally(s -> {
+		}));
-			if (s != SignalType.ON_ERROR) {
-				synchronized (ConsumerConnection.this) {
-					//reset(true);
-				}
-			}
-		});
 	}
 
-	public synchronized void reset(boolean resettingFromRemote) {
+	public synchronized void reset() {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Reset started", this.printStatus());
 		if (connectedState) {
 			if (localTerminationState == null) {
@@ -123,7 +152,9 @@ public class ConsumerConnection<T> {
 			if (LOG.isDebugEnabled()) LOG.debug("{} The previous connection has been interrupted", this.printStatus());
 		}
 		local = null;
-		remote = null;
+		remoteCount = 0;
+		remotes.emitComplete(EmitFailureHandler.FAIL_FAST);
+		remotes = Sinks.many().replay().all();
 		connectedState = false;
 		connectedSink = Sinks.empty();
 		localTerminationState = null;
@@ -133,32 +164,30 @@ public class ConsumerConnection<T> {
 
 	public synchronized void registerRemote(Flux<Payload> remote) {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Remote is trying to register", this.printStatus());
-		if (this.remote != null) {
+		this.remoteCount++;
-			if (LOG.isDebugEnabled()) LOG.debug("{} Remote was already registered", this.printStatus());
+		this.remotes.emitNext(remote, EmitFailureHandler.FAIL_FAST);
-			throw new IllegalStateException("Remote is already registered");
-		}
-		this.remote = remote;
 		if (LOG.isDebugEnabled()) LOG.debug("{} Remote registered", this.printStatus());
 		onChanged();
 	}
 
-	public synchronized void registerLocal(Deserializer<T> local) {
+	public synchronized Throwable registerLocal(Deserializer<T> local) {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Local is trying to register", this.printStatus());
 		if (this.local != null) {
 			if (LOG.isDebugEnabled()) LOG.debug("{} Local was already registered", this.printStatus());
-			throw new IllegalStateException("Local is already registered");
+			return new IllegalStateException("Local is already registered");
 		}
 		this.local = local;
 		if (LOG.isDebugEnabled()) LOG.debug("{} Local registered", this.printStatus());
 		onChanged();
+		return null;
 	}
 
 	private synchronized void onChanged() {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Checking connection changes", this.printStatus());
-		if (local != null && remote != null) {
+		if (local != null && remoteCount > 0) {
 			connectedState = true;
 			if (LOG.isDebugEnabled()) LOG.debug("{} Connected successfully! Emitting connected event", this.printStatus());
-			connectedSink.emitEmpty(EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+			connectedSink.emitEmpty(EmitFailureHandler.FAIL_FAST);
 			if (LOG.isDebugEnabled()) LOG.debug("{} Connected successfully! Emitted connected event", this.printStatus());
 		} else {
 			if (LOG.isDebugEnabled()) LOG.debug("{} Still not connected", this.printStatus());

src/main/java/it/tdlight/reactiveapi/rsocket/MyRSocketServer.java

@@ -1,5 +1,7 @@
 package it.tdlight.reactiveapi.rsocket;
 
+import static reactor.util.concurrent.Queues.XS_BUFFER_SIZE;
+
 import com.google.common.net.HostAndPort;
 import io.rsocket.ConnectionSetupPayload;
 import io.rsocket.Payload;
@@ -32,6 +34,7 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 
 	private final Logger logger = LogManager.getLogger(this.getClass());
 
+	private final int bufferSize;
 	private final Mono<CloseableChannel> serverCloseable;
 
 	protected final Map<String, ConsumerConnection<?>> consumerRegistry = new ConcurrentHashMap<>();
@@ -39,6 +42,11 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 	protected final Map<String, ProducerConnection<?>> producerRegistry = new ConcurrentHashMap<>();
 
 	public MyRSocketServer(HostAndPort baseHost) {
+		this(baseHost, XS_BUFFER_SIZE);
+	}
+
+	public MyRSocketServer(HostAndPort baseHost, int bufferSize) {
+		this.bufferSize = bufferSize;
 		var serverMono = RSocketServer
 				.create(new SocketAcceptor() {
 					@Override
@@ -71,7 +79,8 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 					return Mono.error(new CancelledChannelException("Metadata is wrong"));
 				}
 				var channel = firstValue.getDataUtf8();
-				var conn = MyRSocketServer.this.consumerRegistry.computeIfAbsent(channel, ConsumerConnection::new);
+				var conn = MyRSocketServer.this.consumerRegistry.computeIfAbsent(channel,
+						ch -> new ConsumerConnection<>(ch, bufferSize));
 				conn.registerRemote(flux.skip(1));
 				return conn.connectRemote().then(Mono.fromSupplier(() -> DefaultPayload.create("ok", "result")));
 			} else {
@@ -84,7 +93,8 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 	public @NotNull Flux<Payload> requestStream(@NotNull Payload payload) {
 		var channel = payload.getDataUtf8();
 		return Flux.defer(() -> {
-			var conn = MyRSocketServer.this.producerRegistry.computeIfAbsent(channel, ProducerConnection::new);
+			var conn = MyRSocketServer.this.producerRegistry.computeIfAbsent(channel,
+					ch -> new ProducerConnection<>(ch, bufferSize));
 			conn.registerRemote();
 			return conn.connectRemote();
 		});
@@ -105,8 +115,12 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 			public Flux<Timestamped<K>> consumeMessages() {
 				return serverCloseable.flatMapMany(x -> {
 					//noinspection unchecked
-					var conn = (ConsumerConnection<K>) consumerRegistry.computeIfAbsent(channelName, ConsumerConnection::new);
+					var conn = (ConsumerConnection<K>) consumerRegistry.computeIfAbsent(channelName,
-					conn.registerLocal(deserializer);
+							ch -> new ConsumerConnection<>(ch, bufferSize));
+					Throwable ex = conn.registerLocal(deserializer);
+					if (ex != null) {
+						return Flux.error(ex);
+					}
 					return conn.connectLocal();
 				});
 			}
@@ -123,12 +137,13 @@ public class MyRSocketServer implements RSocketChannelManager, RSocket {
 			logger.error("Failed to create codec for channel \"{}\"", channelName, ex);
 			throw new IllegalStateException("Failed to create codec for channel " + channelName);
 		}
-		return new EventProducer<K>() {
+		return new EventProducer<>() {
 			@Override
 			public Mono<Void> sendMessages(Flux<K> eventsFlux) {
 				return serverCloseable.flatMap(x -> {
 					//noinspection unchecked
-					var conn = (ProducerConnection<K>) producerRegistry.computeIfAbsent(channelName, ProducerConnection::new);
+					var conn = (ProducerConnection<K>) producerRegistry.computeIfAbsent(channelName,
+							ch -> new ProducerConnection<>(ch, bufferSize));
 					conn.registerLocal(eventsFlux.transform(flux -> RSocketUtils.serialize(flux, serializer)));
 					return conn.connectLocal();
 				});

src/main/java/it/tdlight/reactiveapi/rsocket/ProducerConnection.java

@@ -7,12 +7,11 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
-import reactor.core.publisher.Signal;
 import reactor.core.publisher.SignalType;
 import reactor.core.publisher.Sinks;
 import reactor.core.publisher.Sinks.EmitFailureHandler;
-import reactor.core.publisher.Sinks.EmitResult;
 import reactor.core.publisher.Sinks.Empty;
+import reactor.core.publisher.Sinks.Many;
 import reactor.core.scheduler.Schedulers;
 
 public class ProducerConnection<T> {
@@ -20,8 +19,8 @@ public class ProducerConnection<T> {
 	private static final Logger LOG = LogManager.getLogger(ProducerConnection.class);
 
 	private final String channel;
-
+	private final int bufferSize;
-	private Object remote;
+	private int remoteCount = 0;
 
 	private Flux<Payload> local;
 
@@ -30,8 +29,9 @@ public class ProducerConnection<T> {
 	private Optional<Throwable> remoteTerminationState = null;
 	private Empty<Void> remoteTerminationSink = Sinks.empty();
 
-	public ProducerConnection(String channel) {
+	public ProducerConnection(String channel, int bufferSize) {
 		this.channel = channel;
+		this.bufferSize = bufferSize;
 		if  (LOG.isDebugEnabled()) LOG.debug("{} Create new blank connection", this.printStatus());
 	}
 
@@ -39,7 +39,7 @@ public class ProducerConnection<T> {
 		return "[\"%s\" (%d)%s%s%s]".formatted(channel,
 				System.identityHashCode(this),
 				local != null ? ", local" : "",
-				remote != null ? ", remote" : "",
+				remoteCount > 0 ? (remoteCount > 1 ? ", " + remoteCount + " remotes" : ", 1 remote") : "",
 				connectedState ? ((remoteTerminationState != null) ? (remoteTerminationState.isPresent() ? ", done with error" : ", done") : ", connected") : ", waiting"
 		);
 	}
@@ -55,13 +55,7 @@ public class ProducerConnection<T> {
 				if (LOG.isDebugEnabled()) LOG.debug("{} Local is connected", this.printStatus());
 				return remoteTerminationSink.asMono().publishOn(Schedulers.parallel());
 			}
-		})).doFinally(s -> {
+		}));
-			if (s != SignalType.ON_ERROR) {
-				synchronized (ProducerConnection.this) {
-					//reset(false);
-				}
-			}
-		});
 	}
 
 	public synchronized Flux<Payload> connectRemote() {
@@ -77,37 +71,50 @@ public class ProducerConnection<T> {
 			}
 		})).doOnError(ex -> {
 			synchronized (ProducerConnection.this) {
-				if (local != null && remoteTerminationState == null) {
+				if (remoteCount <= 1) {
-					remoteTerminationState = Optional.of(ex);
+					if (local != null && remoteTerminationState == null) {
-					if (LOG.isDebugEnabled()) LOG.debug("%s Remote connection ended with failure, emitting termination failure".formatted(this.printStatus()), ex);
+						remoteTerminationState = Optional.of(ex);
-					var sink = remoteTerminationSink;
+						if (LOG.isDebugEnabled()) LOG.debug("%s Remote connection ended with failure, emitting termination failure".formatted(this.printStatus()), ex);
-					reset(true);
+						var sink = remoteTerminationSink;
-					sink.emitError(ex, EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+						reset();
-					if (LOG.isDebugEnabled()) LOG.debug("%s Remote connection ended with failure, emitted termination failure".formatted(this.printStatus()));
+						sink.emitError(ex, EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+						if (LOG.isDebugEnabled()) LOG.debug("%s Remote connection ended with failure, emitted termination failure".formatted(this.printStatus()));
+					}
+				} else {
+					remoteCount--;
+					if (LOG.isDebugEnabled()) {
+						LOG.debug("%s Remote connection ended with failure, but at least one remote is still online".formatted(
+								this.printStatus()));
+					}
 				}
 			}
 		}).doFinally(s -> {
 			if (s != SignalType.ON_ERROR) {
 				synchronized (ProducerConnection.this) {
-					if (local != null && remoteTerminationState == null) {
+					if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ending with status {}", this.printStatus(), s);
-						assert connectedState;
+					if (remoteCount <= 1) {
-						remoteTerminationState = Optional.empty();
+						if (local != null && remoteTerminationState == null) {
-						if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, emitting termination complete", this.printStatus(), s);
+							assert connectedState;
-						if (s == SignalType.CANCEL) {
+							remoteTerminationState = Optional.empty();
-							remoteTerminationSink.emitError(new CancelledChannelException(), EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+							if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, emitting termination complete", this.printStatus(), s);
-						} else {
+							if (s == SignalType.CANCEL) {
-							remoteTerminationSink.emitEmpty(EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+								remoteTerminationSink.emitError(new CancelledChannelException(), EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+							} else {
+								remoteTerminationSink.emitEmpty(EmitFailureHandler.busyLooping(Duration.ofMillis(100)));
+							}
 						}
+						reset();
 						if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, emitted termination complete", this.printStatus(), s);
+					} else {
+						remoteCount--;
+						if (LOG.isDebugEnabled()) LOG.debug("{} Remote connection ended with status {}, but at least one remote is still online", this.printStatus(), s);
 					}
-					reset(true);
-
 				}
 			}
 		});
 	}
 
-	public synchronized void reset(boolean resettingFromRemote) {
+	public synchronized void reset() {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Reset started", this.printStatus());
 		if (connectedState) {
 			if (remoteTerminationState == null) {
@@ -124,7 +131,7 @@ public class ProducerConnection<T> {
 			if (LOG.isDebugEnabled()) LOG.debug("{} The previous connection has been interrupted", this.printStatus());
 		}
 		local = null;
-		remote = null;
+		remoteCount = 0;
 		connectedState = false;
 		connectedSink = Sinks.empty();
 		remoteTerminationState = null;
@@ -134,11 +141,11 @@ public class ProducerConnection<T> {
 
 	public synchronized void registerRemote() {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Remote is trying to register", this.printStatus());
-		if (this.remote != null) {
+		if (this.remoteCount  > 0) {
 			if (LOG.isDebugEnabled()) LOG.debug("{} Remote was already registered", this.printStatus());
 			throw new IllegalStateException("Remote is already registered");
 		}
-		this.remote = new Object();
+		this.remoteCount++;
 		if (LOG.isDebugEnabled()) LOG.debug("{} Remote registered", this.printStatus());
 		onChanged();
 	}
@@ -149,14 +156,14 @@ public class ProducerConnection<T> {
 			if (LOG.isDebugEnabled()) LOG.debug("{} Local was already registered", this.printStatus());
 			throw new IllegalStateException("Local is already registered");
 		}
-		this.local = local;
+		this.local = local.publish(bufferSize).refCount(1);
 		if (LOG.isDebugEnabled()) LOG.debug("{} Local registered", this.printStatus());
 		onChanged();
 	}
 
 	private synchronized void onChanged() {
 		if (LOG.isDebugEnabled()) LOG.debug("{} Checking connection changes", this.printStatus());
-		if (local != null && remote != null) {
+		if (local != null && remoteCount > 0) {
 			connectedState = true;
 			if (LOG.isDebugEnabled()) LOG.debug("{} Connected successfully! Emitting connected event", this.printStatus());
 			connectedSink.emitEmpty(EmitFailureHandler.busyLooping(Duration.ofMillis(100)));

src/test/java/it/tdlight/reactiveapi/test/TestChannel.java

@@ -15,6 +15,7 @@ import java.time.Duration;
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.ConcurrentLinkedDeque;
+import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Function;
 import java.util.logging.Level;
 import java.util.stream.Collectors;
@@ -262,12 +263,13 @@ public abstract class TestChannel {
 	@Test
 	public void testConsumeMidCancel() {
 		var dataFlux = Flux.fromIterable(data).publish().autoConnect();
+		AtomicReference<Throwable> exRef = new AtomicReference<>();
 		var eventProducer = producer
 				.sendMessages(dataFlux.map(Integer::toUnsignedString))
 				.retryWhen(Retry.fixedDelay(Long.MAX_VALUE, Duration.ofSeconds(1)))
 				.repeatWhen(n -> n.delayElements(Duration.ofSeconds(1)))
 				.subscribeOn(Schedulers.parallel())
-				.subscribe(n -> {}, ex -> Assertions.fail(ex));
+				.subscribe(n -> {}, exRef::set);
 		try {
 			var receiver1 = consumer
 					.consumeMessages()
@@ -284,10 +286,14 @@ public abstract class TestChannel {
 					.map(Integer::parseUnsignedInt)
 					.collect(Collectors.toCollection(IntArrayList::new))
 					.block(Duration.ofSeconds(5));
+			var ex = exRef.get();
+			if (ex != null) {
+				Assertions.fail(ex);
+			}
 			Assertions.assertNotNull(receiver1);
 			Assertions.assertNotNull(receiver2);
-			receiver1.addAll(receiver2);
+			Assertions.assertEquals(data.subList(0, 10), receiver1);
-			Assertions.assertEquals(data, receiver1);
+			Assertions.assertEquals(data.subList(50, 100), receiver2.subList(receiver2.size() - 50, receiver2.size()));
 			System.out.println(receiver1);
 		} finally {
 			eventProducer.dispose();
@@ -326,8 +332,9 @@ public abstract class TestChannel {
 					.collect(Collectors.toCollection(IntArrayList::new))
 					.block();
 			Assertions.assertNotNull(receiver2);
-			data.removeElements(0, 11);
+			Assertions.assertNotEquals(0, receiver2.getInt(0));
-			Assertions.assertEquals(data, receiver2);
+			Assertions.assertNotEquals(1, receiver2.getInt(1));
+			Assertions.assertNotEquals(2, receiver2.getInt(2));
 			System.out.println(receiver2);
 		} finally {
 			eventProducer.dispose();
@@ -391,11 +398,10 @@ public abstract class TestChannel {
 			producer
 					.sendMessages(dataFlux.limitRate(1).map(Integer::toUnsignedString))
 					.block(Duration.ofSeconds(5));
-			data.removeInt(10);
+			Assertions.assertTrue(numbers.contains(0));
-			if (numbers.size() < data.size()) {
+			Assertions.assertTrue(numbers.contains(1));
-				data.removeInt(data.size() - 1);
+			Assertions.assertTrue(numbers.contains(50));
-			}
+			Assertions.assertTrue(numbers.contains(51));
-			Assertions.assertEquals(data, List.copyOf(numbers));
 		} finally {
 			eventConsumer.dispose();
 		}

src/test/java/it/tdlight/reactiveapi/test/TestRSocket.java

@@ -44,7 +44,7 @@ public class TestRSocket {
 
 	@Test
 	public void testServerConsumer() {
-		var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085));
+		var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085), 1);
 		try {
 			var rawClient = RSocketConnector.create()
 					.setupPayload(DefaultPayload.create("client", "setup-info"))
@@ -73,7 +73,7 @@ public class TestRSocket {
 
 	@Test
 	public void testServerProducer() {
-		var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085));
+		var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085), 1);
 		try {
 			var rawClient = RSocketConnector.create()
 					.setupPayload(DefaultPayload.create("client", "setup-info"))
@@ -173,7 +173,7 @@ public class TestRSocket {
 	@Test
 	public void testServerOnClose() {
 		Assertions.assertThrows(IllegalStateException.class, () -> {
-			var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085));
+			var server = new MyRSocketServer(HostAndPort.fromParts("127.0.0.1", 8085), 1);
 			try {
 				server.onClose().block(Duration.ofSeconds(1));
 			} finally {