Bugfixes

README.md

@@ -0,0 +1,13 @@
+TDLib session container
+=======================
+
+This software is a wrapper for [TDLight Java](https://github.com/tdlight-team/tdlight-java)
+
+Unlike TDLight java, this wrapper abstracts TDLib to make it possible to run remotely,
+decoupling it into a client and a server.
+
+TDLib session container can be used in various ways:
+ - Clustered
+ - Remote
+ - Local
+ - Direct (The client process, as TDLight java)

pom.xml

@@ -139,7 +139,7 @@
         <dependency>
             <groupId>it.tdlight</groupId>
             <artifactId>tdlight-java</artifactId>
-            <version>[3.171.36,)</version>
+            <version>[4.171.54,)</version>
         </dependency>
         <dependency>
             <groupId>it.cavallium</groupId>

src/main/java/it/tdlight/tdlibsession/remoteclient/TDLibRemoteClient.java

@@ -25,6 +25,7 @@ import reactor.core.publisher.Mono;
 import reactor.core.publisher.Sinks;
 import reactor.core.publisher.Sinks.One;
 import reactor.core.scheduler.Schedulers;
+import reactor.tools.agent.ReactorDebugAgent;
 
 public class TDLibRemoteClient implements AutoCloseable {
 
@@ -41,13 +42,27 @@ public class TDLibRemoteClient implements AutoCloseable {
 	 */
 	private final AtomicInteger statsActiveDeployments = new AtomicInteger();
 
-	public TDLibRemoteClient(SecurityInfo securityInfo, String masterHostname, String netInterface, int port, Set<String> membersAddresses) {
+	public static boolean runningFromIntelliJ() {
+		return System.getProperty("java.class.path").contains("idea_rt.jar")
+				|| System.getProperty("idea.test.cyclic.buffer.size") != null;
+	}
+
+	public TDLibRemoteClient(SecurityInfo securityInfo,
+			String masterHostname,
+			String netInterface,
+			int port,
+			Set<String> membersAddresses,
+			boolean enableStacktraces) {
 		this.securityInfo = securityInfo;
 		this.masterHostname = masterHostname;
 		this.netInterface = netInterface;
 		this.port = port;
 		this.membersAddresses = membersAddresses;
 
+		if (enableStacktraces && !runningFromIntelliJ()) {
+			ReactorDebugAgent.init();
+		}
+
 		try {
 			Init.start();
 		} catch (CantLoadLibrary ex) {
@@ -74,13 +89,14 @@ public class TDLibRemoteClient implements AutoCloseable {
 		Path keyStorePasswordPath = Paths.get(args[4]);
 		Path trustStorePath = Paths.get(args[5]);
 		Path trustStorePasswordPath = Paths.get(args[6]);
+		boolean enableStacktraces = Boolean.parseBoolean(args[7]);
 
 		var loggerContext = (org.apache.logging.log4j.core.LoggerContext) LogManager.getContext(false);
 		loggerContext.setConfigLocation(TDLibRemoteClient.class.getResource("/tdlib-session-container-log4j2.xml").toURI());
 
 		var securityInfo = new SecurityInfo(keyStorePath, keyStorePasswordPath, trustStorePath, trustStorePasswordPath);
 
-		var client = new TDLibRemoteClient(securityInfo, masterHostname, netInterface, port, membersAddresses);
+		var client = new TDLibRemoteClient(securityInfo, masterHostname, netInterface, port, membersAddresses, enableStacktraces);
 
 		client
 				.start()
@@ -140,16 +156,18 @@ public class TDLibRemoteClient implements AutoCloseable {
 								.setConfig(new JsonObject()
 										.put("botId", req.id())
 										.put("botAlias", req.alias())
-										.put("local", false));
+										.put("local", false)
+										.put("implementationDetails", req.implementationDetails()));
 						var verticle = new AsyncTdMiddleEventBusServer();
 
 						// Binlog path
 						var sessPath = getSessionDirectory(req.id());
+						var mediaPath = getMediaDirectory(req.id());
 						var blPath = getSessionBinlogDirectory(req.id());
 
 						BinlogUtils
 								.chooseBinlog(clusterManager.getVertx().fileSystem(), blPath, req.binlog(), req.binlogDate())
-								.then(BinlogUtils.cleanSessionPath(clusterManager.getVertx().fileSystem(), blPath, sessPath))
+								.then(BinlogUtils.cleanSessionPath(clusterManager.getVertx().fileSystem(), blPath, sessPath, mediaPath))
 								.then(clusterManager.getVertx().rxDeployVerticle(verticle, deploymentOptions).as(MonoUtils::toMono))
 								.subscribeOn(Schedulers.single())
 								.subscribe(

src/main/java/it/tdlight/tdlibsession/td/direct/AsyncTdDirectImpl.java

@@ -1,15 +1,15 @@
 package it.tdlight.tdlibsession.td.direct;
 
+import io.vertx.core.json.JsonObject;
 import it.tdlight.common.TelegramClient;
 import it.tdlight.jni.TdApi;
 import it.tdlight.jni.TdApi.AuthorizationStateClosed;
 import it.tdlight.jni.TdApi.Close;
 import it.tdlight.jni.TdApi.Function;
-import it.tdlight.jni.TdApi.Object;
 import it.tdlight.jni.TdApi.Ok;
 import it.tdlight.jni.TdApi.UpdateAuthorizationState;
+import it.tdlight.tdlibsession.td.TdError;
 import it.tdlight.tdlibsession.td.TdResult;
-import it.tdlight.tdlight.ClientManager;
 import it.tdlight.utils.MonoUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -23,11 +23,17 @@ public class AsyncTdDirectImpl implements AsyncTdDirect {
 
 	private static final Logger logger = LoggerFactory.getLogger(AsyncTdDirect.class);
 
-	private final One<TelegramClient> td = Sinks.one();
+	private final TelegramClientFactory telegramClientFactory;
-
+	private final JsonObject implementationDetails;
 	private final String botAlias;
 
-	public AsyncTdDirectImpl(String botAlias) {
+	private final One<TelegramClient> td = Sinks.one();
+
+	public AsyncTdDirectImpl(TelegramClientFactory telegramClientFactory,
+			JsonObject implementationDetails,
+			String botAlias) {
+		this.telegramClientFactory = telegramClientFactory;
+		this.implementationDetails = implementationDetails;
 		this.botAlias = botAlias;
 	}
 
@@ -65,41 +71,40 @@ public class AsyncTdDirectImpl implements AsyncTdDirect {
 	public Flux<TdApi.Object> receive(AsyncTdDirectOptions options) {
 		// If closed it will be either true or false
 		final One<Boolean> closedFromTd = Sinks.one();
-		return Flux.<TdApi.Object>create(emitter -> {
+		return telegramClientFactory.create(implementationDetails)
-			var client = ClientManager.create((Object object) -> {
+				.flatMapMany(client -> Flux
-				emitter.next(object);
+						.<TdApi.Object>create(updatesSink -> {
-				// Close the emitter if receive closed state
+							client.initialize((TdApi.Object object) -> {
-				if (object.getConstructor() == UpdateAuthorizationState.CONSTRUCTOR
+								updatesSink.next(object);
-						&& ((UpdateAuthorizationState) object).authorizationState.getConstructor()
+								// Close the emitter if receive closed state
-						== AuthorizationStateClosed.CONSTRUCTOR) {
+								if (object.getConstructor() == UpdateAuthorizationState.CONSTRUCTOR
-					logger.debug("Received closed status from tdlib");
+										&& ((UpdateAuthorizationState) object).authorizationState.getConstructor()
-					closedFromTd.tryEmitValue(true);
+										== AuthorizationStateClosed.CONSTRUCTOR) {
-					emitter.complete();
+									logger.debug("Received closed status from tdlib");
-				}
+									closedFromTd.tryEmitValue(true);
-			}, emitter::error, emitter::error);
+									updatesSink.complete();
-			try {
+								}
-				this.td.tryEmitValue(client).orThrow();
+							}, updatesSink::error, updatesSink::error);
-			} catch (Exception ex) {
-				emitter.error(ex);
-			}
 
-			// Send close if the stream is disposed before tdlib is closed
+							if (td.tryEmitValue(client).isFailure()) {
-			emitter.onDispose(() -> {
+								updatesSink.error(new TdError(500, "Failed to emit td client"));
-				// Try to emit false, so that if it has not been closed from tdlib, now it is explicitly false.
+							}
-				closedFromTd.tryEmitValue(false);
 
-				closedFromTd.asMono()
+							// Send close if the stream is disposed before tdlib is closed
-						.filter(isClosedFromTd -> !isClosedFromTd)
+							updatesSink.onDispose(() -> {
-						.doOnNext(x -> {
+								// Try to emit false, so that if it has not been closed from tdlib, now it is explicitly false.
-							logger.warn("The stream has been disposed without closing tdlib. Sending TdApi.Close()...");
+								closedFromTd.tryEmitValue(false);
-							client.send(new Close(),
+
-									result -> logger.warn("Close result: {}", result),
+								closedFromTd.asMono().filter(isClosedFromTd -> !isClosedFromTd).doOnNext(x -> {
-									ex -> logger.error("Error when disposing td client", ex)
+									logger.warn("The stream has been disposed without closing tdlib. Sending TdApi.Close()...");
-							);
+									client.send(new Close(),
+											result -> logger.warn("Close result: {}", result),
+											ex -> logger.error("Error when disposing td client", ex)
+									);
+								}).subscribeOn(Schedulers.single()).subscribe();
+							});
 						})
-						.subscribeOn(Schedulers.single())
+						.subscribeOn(Schedulers.boundedElastic())
-						.subscribe();
+				);
-			});
-		});
 	}
 }

src/main/java/it/tdlight/tdlibsession/td/direct/TelegramClientFactory.java

@@ -0,0 +1,28 @@
+package it.tdlight.tdlibsession.td.direct;
+
+import io.vertx.core.json.JsonObject;
+import it.tdlight.common.TelegramClient;
+import it.tdlight.tdlight.ClientManager;
+import it.tdlight.utils.MonoUtils;
+import reactor.core.publisher.Mono;
+
+public class TelegramClientFactory {
+
+	public TelegramClientFactory() {
+
+	}
+
+	public Mono<TelegramClient> create(JsonObject implementationDetails) {
+		return MonoUtils.fromBlockingSingle(() -> {
+			var implementationName = implementationDetails.getString("name", "native-client");
+			switch (implementationName) {
+				case "native-client":
+					return ClientManager.create();
+				case "test-client":
+					//todo: create a noop test client with optional behaviours
+				default:
+					return null;
+			}
+		});
+	}
+}

src/main/java/it/tdlight/tdlibsession/td/easy/AsyncTdEasy.java

@@ -57,7 +57,7 @@ import reactor.core.scheduler.Schedulers;
 
 public class AsyncTdEasy {
 
-	private static final Logger logger = LoggerFactory.getLogger(AsyncTdEasy.class);
+	private final Logger logger;
 
 	private static final Scheduler scheduler = Schedulers.newSingle("AsyncTdEasy", false);
 	private final ReplayProcessor<AuthorizationState> authState = ReplayProcessor.create(1);
@@ -72,6 +72,7 @@ public class AsyncTdEasy {
 	public AsyncTdEasy(AsyncTdMiddle td, String logName) {
 		this.td = td;
 		this.logName = logName;
+		this.logger = LoggerFactory.getLogger("AsyncTdEasy " + logName);
 
 		// todo: use Duration.ZERO instead of 10ms interval
 		this.incomingUpdates = td.receive()
@@ -93,8 +94,9 @@ public class AsyncTdEasy {
 					} else {
 						logger.error(ex.getLocalizedMessage(), ex);
 					}
-				}).doOnComplete(() -> {
+				})
-					authState.asFlux().take(1).single().subscribe(authState -> {
+				.doOnComplete(() -> {
+					authState.asFlux().take(1).single().subscribeOn(Schedulers.single()).subscribe(authState -> {
 						onUpdatesTerminated();
 						if (authState.getConstructor() != AuthorizationStateClosed.CONSTRUCTOR) {
 							logger.warn("Updates stream has closed while"
@@ -104,7 +106,7 @@ public class AsyncTdEasy {
 						}
 					});
 				}).doOnError(ex -> {
-					authState.asFlux().take(1).single().subscribe(authState -> {
+					authState.asFlux().take(1).single().subscribeOn(Schedulers.single()).subscribe(authState -> {
 						onUpdatesTerminated();
 						if (authState.getConstructor() != AuthorizationStateClosed.CONSTRUCTOR) {
 							logger.warn("Updates stream has terminated with an error while"

src/main/java/it/tdlight/tdlibsession/td/middle/StartSessionMessage.java

@@ -1,5 +1,6 @@
 package it.tdlight.tdlibsession.td.middle;
 
+import io.vertx.core.json.JsonObject;
 import java.util.Arrays;
 import java.util.Objects;
 import java.util.StringJoiner;
@@ -10,12 +11,14 @@ public final class StartSessionMessage {
 	private final String alias;
 	private final byte[] binlog;
 	private final long binlogDate;
+	private final JsonObject implementationDetails;
 
-	public StartSessionMessage(int id, String alias, byte[] binlog, long binlogDate) {
+	public StartSessionMessage(int id, String alias, byte[] binlog, long binlogDate, JsonObject implementationDetails) {
 		this.id = id;
 		this.alias = alias;
 		this.binlog = binlog;
 		this.binlogDate = binlogDate;
+		this.implementationDetails = implementationDetails;
 	}
 
 	public int id() {
@@ -34,6 +37,10 @@ public final class StartSessionMessage {
 		return binlogDate;
 	}
 
+	public JsonObject implementationDetails() {
+		return implementationDetails;
+	}
+
 	@Override
 	public boolean equals(Object o) {
 		if (this == o) {
@@ -54,7 +61,10 @@ public final class StartSessionMessage {
 		if (!Objects.equals(alias, that.alias)) {
 			return false;
 		}
-		return Arrays.equals(binlog, that.binlog);
+		if (!Arrays.equals(binlog, that.binlog)) {
+			return false;
+		}
+		return Objects.equals(implementationDetails, that.implementationDetails);
 	}
 
 	@Override
@@ -63,6 +73,7 @@ public final class StartSessionMessage {
 		result = 31 * result + (alias != null ? alias.hashCode() : 0);
 		result = 31 * result + Arrays.hashCode(binlog);
 		result = 31 * result + (int) (binlogDate ^ (binlogDate >>> 32));
+		result = 31 * result + (implementationDetails != null ? implementationDetails.hashCode() : 0);
 		return result;
 	}
 
@@ -73,6 +84,7 @@ public final class StartSessionMessage {
 				.add("alias='" + alias + "'")
 				.add("binlog=" + Arrays.toString(binlog))
 				.add("binlogDate=" + binlogDate)
+				.add("implementationDetails=" + implementationDetails)
 				.toString();
 	}
 }

src/main/java/it/tdlight/tdlibsession/td/middle/StartSessionMessageCodec.java

@@ -2,6 +2,7 @@ package it.tdlight.tdlibsession.td.middle;
 
 import io.vertx.core.buffer.Buffer;
 import io.vertx.core.eventbus.MessageCodec;
+import io.vertx.core.json.JsonObject;
 import it.tdlight.utils.VertxBufferInputStream;
 import it.tdlight.utils.VertxBufferOutputStream;
 import org.warp.commonutils.stream.SafeDataInputStream;
@@ -25,6 +26,7 @@ public class StartSessionMessageCodec implements MessageCodec<StartSessionMessag
 				dos.writeInt(t.binlog().length);
 				dos.write(t.binlog());
 				dos.writeLong(t.binlogDate());
+				dos.writeUTF(t.implementationDetails().toString());
 			}
 		}
 	}
@@ -33,7 +35,12 @@ public class StartSessionMessageCodec implements MessageCodec<StartSessionMessag
 	public StartSessionMessage decodeFromWire(int pos, Buffer buffer) {
 		try (var fis = new VertxBufferInputStream(buffer, pos)) {
 			try (var dis = new SafeDataInputStream(fis)) {
-				return new StartSessionMessage(dis.readInt(), dis.readUTF(), dis.readNBytes(dis.readInt()), dis.readLong());
+				return new StartSessionMessage(dis.readInt(),
+						dis.readUTF(),
+						dis.readNBytes(dis.readInt()),
+						dis.readLong(),
+						new JsonObject(dis.readUTF())
+				);
 			}
 		}
 	}

src/main/java/it/tdlight/tdlibsession/td/middle/TdClusterManager.java

@@ -160,6 +160,18 @@ public class TdClusterManager {
 		}
 
 		vertxOptions.setPreferNativeTransport(true);
+		// check for blocked threads every 5s
+		vertxOptions.setBlockedThreadCheckInterval(5);
+		vertxOptions.setBlockedThreadCheckIntervalUnit(TimeUnit.SECONDS);
+		// warn if an event loop thread handler took more than 100ms to execute
+		vertxOptions.setMaxEventLoopExecuteTime(50);
+		vertxOptions.setMaxEventLoopExecuteTimeUnit(TimeUnit.MILLISECONDS);
+		// warn if an worker thread handler took more than 10s to execute
+		vertxOptions.setMaxWorkerExecuteTime(10);
+		vertxOptions.setMaxWorkerExecuteTimeUnit(TimeUnit.SECONDS);
+		// log the stack trace if an event loop or worker handler took more than 20s to execute
+		vertxOptions.setWarningExceptionTime(100);
+		vertxOptions.setWarningExceptionTimeUnit(TimeUnit.MILLISECONDS);
 
 		return Mono
 				.<Vertx>create(sink -> {

src/main/java/it/tdlight/tdlibsession/td/middle/client/AsyncTdMiddleEventBusClient.java

@@ -1,6 +1,7 @@
 package it.tdlight.tdlibsession.td.middle.client;
 
 import io.vertx.core.eventbus.DeliveryOptions;
+import io.vertx.core.json.JsonObject;
 import io.vertx.reactivex.core.Vertx;
 import io.vertx.reactivex.core.eventbus.Message;
 import io.vertx.reactivex.core.eventbus.MessageConsumer;
@@ -22,7 +23,6 @@ import it.tdlight.utils.MonoUtils;
 import it.tdlight.utils.MonoUtils.SinkRWStream;
 import java.nio.file.Path;
 import java.time.Duration;
-import org.reactivestreams.Publisher;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import reactor.core.publisher.Flux;
@@ -66,6 +66,7 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 			int botId,
 			String botAlias,
 			boolean local,
+			JsonObject implementationDetails,
 			Path binlogsArchiveDirectory) {
 		var instance = new AsyncTdMiddleEventBusClient(clusterManager);
 		return retrieveBinlog(clusterManager.getVertx(), binlogsArchiveDirectory, botId)
@@ -78,7 +79,7 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 						.thenReturn(binlog)
 				)
 				.<AsyncTdMiddle>flatMap(binlog -> instance
-						.start(botId, botAlias, local, binlog)
+						.start(botId, botAlias, local, implementationDetails, binlog)
 						.thenReturn(instance)
 				)
 				.single();
@@ -96,7 +97,11 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 		return this.binlog.asMono().flatMap(binlog -> BinlogUtils.saveBinlog(binlog, data));
 	}
 
-	public Mono<Void> start(int botId, String botAlias, boolean local, BinlogAsyncFile binlog) {
+	public Mono<Void> start(int botId,
+			String botAlias,
+			boolean local,
+			JsonObject implementationDetails,
+			BinlogAsyncFile binlog) {
 		this.botId = botId;
 		this.botAlias = botAlias;
 		this.botAddress = "bots.bot." + this.botId;
@@ -111,16 +116,22 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 					var binlogLastModifiedTime = tuple.getT1();
 					var binlogData = tuple.getT2();
 
-					var msg = new StartSessionMessage(this.botId, this.botAlias, binlogData, binlogLastModifiedTime);
+					var msg = new StartSessionMessage(this.botId,
+							this.botAlias,
+							binlogData,
+							binlogLastModifiedTime,
+							implementationDetails
+					);
 					return setupUpdatesListener()
-							.then(cluster.getEventBus().<byte[]>rxRequest("bots.start-bot", msg).as(MonoUtils::toMono))
+							.then(Mono.defer(() -> local ? Mono.empty()
+									: cluster.getEventBus().<byte[]>rxRequest("bots.start-bot", msg).as(MonoUtils::toMono)))
 							.then();
 				});
 	}
 
 	@SuppressWarnings("CallingSubscribeInNonBlockingScope")
 	private Mono<Void> setupUpdatesListener() {
-		MessageConsumer<TdResultList> updateConsumer = MessageConsumer.newInstance(cluster.getEventBus().<TdResultList>consumer(botAddress + ".updates").getDelegate());
+		MessageConsumer<TdResultList> updateConsumer = MessageConsumer.newInstance(cluster.getEventBus().<TdResultList>consumer(botAddress + ".updates").setMaxBufferedMessages(5000).getDelegate());
 		updateConsumer.endHandler(h -> {
 			logger.error("<<<<<<<<<<<<<<<<EndHandler?>>>>>>>>>>>>>");
 		});
@@ -138,7 +149,12 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 	@Override
 	public Flux<TdApi.Object> receive() {
 		// Here the updates will be received
-		return cluster.getEventBus().<byte[]>rxRequest(botAddress + ".ready-to-receive", EMPTY).as(MonoUtils::toMono)
+		return Mono
+				.fromRunnable(() -> logger.trace("Called receive() from parent"))
+				.doOnSuccess(s -> logger.trace("Sending ready-to-receive"))
+				.then(cluster.getEventBus().<byte[]>rxRequest(botAddress + ".ready-to-receive", EMPTY, deliveryOptionsWithTimeout).as(MonoUtils::toMono))
+				.doOnSuccess(s -> logger.trace("Sent ready-to-receive, received reply"))
+				.doOnSuccess(s -> logger.trace("About to read updates flux"))
 				.thenMany(updates.readAsFlux())
 				.cast(io.vertx.core.eventbus.Message.class)
 				.timeout(Duration.ofSeconds(20), Mono.fromCallable(() -> {
@@ -157,15 +173,14 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 				.doOnTerminate(updatesStreamEnd::tryEmitEmpty);
 	}
 
-	private Publisher<TdApi.Object> interceptUpdate(TdApi.Object update) {
+	private Mono<TdApi.Object> interceptUpdate(TdApi.Object update) {
 		switch (update.getConstructor()) {
 			case TdApi.UpdateAuthorizationState.CONSTRUCTOR:
 				var updateAuthorizationState = (TdApi.UpdateAuthorizationState) update;
 				switch (updateAuthorizationState.authorizationState.getConstructor()) {
 					case TdApi.AuthorizationStateClosed.CONSTRUCTOR:
-						return cluster
+						return Mono.fromRunnable(() -> logger.trace("Received AuthorizationStateClosed from tdlib"))
-								.getEventBus()
+								.then(cluster.getEventBus().<EndSessionMessage>rxRequest(this.botAddress + ".read-binlog", EMPTY).as(MonoUtils::toMono))
-								.<EndSessionMessage>rxRequest(this.botAddress + ".read-binlog", EMPTY).as(MonoUtils::toMono)
 								.doOnNext(l -> logger.info("Received binlog from server. Size: " + BinlogUtils.humanReadableByteCountBin(l.body().binlog().length)))
 								.flatMap(latestBinlog -> this.saveBinlog(latestBinlog.body().binlog()))
 								.doOnSuccess(s -> logger.info("Overwritten binlog from server"))
@@ -182,16 +197,20 @@ public class AsyncTdMiddleEventBusClient implements AsyncTdMiddle {
 		return Mono
 				.firstWithSignal(
 						MonoUtils.castVoid(crash.asMono()),
-						cluster.getEventBus()
+						Mono
-								.<TdResultMessage>rxRequest(botAddress + ".execute", req, deliveryOptions).as(MonoUtils::toMono)
+								.fromRunnable(() -> logger.trace("Executing request {}", request))
+								.then(cluster.getEventBus().<TdResultMessage>rxRequest(botAddress + ".execute", req, deliveryOptions).as(MonoUtils::toMono))
 								.onErrorMap(ex -> ResponseError.newResponseError(request, botAlias, ex))
-								.<TdResult<T>>flatMap(resp -> Mono.fromCallable(() -> {
+								.<TdResult<T>>flatMap(resp -> Mono
-									if (resp.body() == null) {
+										.fromCallable(() -> {
-										throw ResponseError.newResponseError(request, botAlias, new TdError(500, "Response is empty"));
+											if (resp.body() == null) {
-									} else {
+												throw ResponseError.newResponseError(request, botAlias, new TdError(500, "Response is empty"));
-										return resp.body().toTdResult();
+											} else {
-									}
+												return resp.body().toTdResult();
-								}))
+											}
+										})
+								)
+								.doOnSuccess(s -> logger.trace("Executed request"))
 		)
 				.switchIfEmpty(Mono.defer(() -> Mono.fromCallable(() -> {
 					throw ResponseError.newResponseError(request, botAlias, new TdError(500, "Client is closed or response is empty"));

src/main/java/it/tdlight/tdlibsession/td/middle/direct/AsyncTdMiddleDirect.java

@@ -12,6 +12,7 @@ import it.tdlight.tdlibsession.td.ResponseError;
 import it.tdlight.tdlibsession.td.TdResult;
 import it.tdlight.tdlibsession.td.direct.AsyncTdDirectImpl;
 import it.tdlight.tdlibsession.td.direct.AsyncTdDirectOptions;
+import it.tdlight.tdlibsession.td.direct.TelegramClientFactory;
 import it.tdlight.tdlibsession.td.middle.AsyncTdMiddle;
 import it.tdlight.tdlibsession.td.middle.TdClusterManager;
 import it.tdlight.utils.MonoUtils;
@@ -26,21 +27,26 @@ public class AsyncTdMiddleDirect extends AbstractVerticle implements AsyncTdMidd
 
 	private static final Logger logger = LoggerFactory.getLogger(AsyncTdMiddleDirect.class);
 
+	private final TelegramClientFactory clientFactory;
+
 	protected AsyncTdDirectImpl td;
 	private String botAddress;
 	private String botAlias;
 	private final Empty<Object> closeRequest = Sinks.empty();
 
 	public AsyncTdMiddleDirect() {
+		this.clientFactory = new TelegramClientFactory();
 	}
 
 	public static Mono<AsyncTdMiddle> getAndDeployInstance(TdClusterManager clusterManager,
 			String botAlias,
-			String botAddress) {
+			String botAddress,
+			JsonObject implementationDetails) {
 			var instance = new AsyncTdMiddleDirect();
 			var options = clusterManager.newDeploymentOpts().setConfig(new JsonObject()
 					.put("botAlias", botAlias)
-					.put("botAddress", botAddress));
+					.put("botAddress", botAddress)
+					.put("implementationDetails", implementationDetails));
 		return clusterManager.getVertx()
 				.rxDeployVerticle(instance, options)
 				.as(MonoUtils::toMono)
@@ -60,8 +66,12 @@ public class AsyncTdMiddleDirect extends AbstractVerticle implements AsyncTdMidd
 			throw new IllegalArgumentException("botAlias is not set!");
 		}
 		this.botAlias = botAlias;
+		var implementationDetails = config().getJsonObject("implementationDetails");
+		if (implementationDetails == null) {
+			throw new IllegalArgumentException("implementationDetails is not set!");
+		}
 
-		this.td = new AsyncTdDirectImpl(botAlias);
+		this.td = new AsyncTdDirectImpl(clientFactory, implementationDetails, botAlias);
 
 		startPromise.complete();
 	}

src/main/java/it/tdlight/tdlibsession/td/middle/direct/AsyncTdMiddleLocal.java

@@ -29,19 +29,26 @@ public class AsyncTdMiddleLocal implements AsyncTdMiddle {
 
 	private final AsyncTdMiddleEventBusServer srv;
 	private final One<AsyncTdMiddle> cli = Sinks.one();
+	private final JsonObject implementationDetails;
 
 
-	public AsyncTdMiddleLocal(TdClusterManager masterClusterManager, String botAlias, int botId) {
+	public AsyncTdMiddleLocal(TdClusterManager masterClusterManager,
+			String botAlias,
+			int botId,
+			JsonObject implementationDetails) {
 		this.masterClusterManager = masterClusterManager;
 		this.botAlias = botAlias;
 		this.botId = botId;
+		this.implementationDetails = implementationDetails;
 		this.vertx = masterClusterManager.getVertx();
 		this.deploymentOptions = masterClusterManager
 				.newDeploymentOpts()
 				.setConfig(new JsonObject()
 						.put("botId", botId)
 						.put("botAlias", botAlias)
-						.put("local", true));
+						.put("local", true)
+						.put("implementationDetails", implementationDetails)
+				);
 		this.srv = new AsyncTdMiddleEventBusServer();
 	}
 
@@ -51,7 +58,10 @@ public class AsyncTdMiddleLocal implements AsyncTdMiddle {
 				.single()
 				.then(Mono.fromSupplier(() -> new AsyncTdMiddleEventBusClient(masterClusterManager)))
 				.zipWith(AsyncTdMiddleEventBusClient.retrieveBinlog(vertx, Path.of("binlogs"), botId))
-				.flatMap(tuple -> tuple.getT1().start(botId, botAlias, true, tuple.getT2()).thenReturn(tuple.getT1()))
+				.flatMap(tuple -> tuple
+						.getT1()
+						.start(botId, botAlias, true, implementationDetails, tuple.getT2())
+						.thenReturn(tuple.getT1()))
 				.onErrorMap(InitializationException::new)
 				.doOnNext(this.cli::tryEmitValue)
 				.doOnError(this.cli::tryEmitError)

src/main/java/it/tdlight/tdlibsession/td/middle/server/AsyncTdMiddleEventBusServer.java

@@ -18,6 +18,7 @@ import it.tdlight.tdlibsession.td.TdError;
 import it.tdlight.tdlibsession.td.TdResultMessage;
 import it.tdlight.tdlibsession.td.direct.AsyncTdDirectImpl;
 import it.tdlight.tdlibsession.td.direct.AsyncTdDirectOptions;
+import it.tdlight.tdlibsession.td.direct.TelegramClientFactory;
 import it.tdlight.tdlibsession.td.middle.ExecuteObject;
 import it.tdlight.tdlibsession.td.middle.TdResultList;
 import it.tdlight.tdlibsession.td.middle.TdResultListMessageCodec;
@@ -30,6 +31,7 @@ import org.slf4j.LoggerFactory;
 import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 import reactor.core.publisher.Sinks;
+import reactor.core.publisher.Sinks.Empty;
 import reactor.core.publisher.Sinks.One;
 import reactor.core.scheduler.Schedulers;
 import reactor.util.function.Tuples;
@@ -43,6 +45,7 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 
 	// Values configured from constructor
 	private final AsyncTdDirectOptions tdOptions;
+	private final TelegramClientFactory clientFactory;
 
 	// Variables configured by the user at startup
 	private final One<Integer> botId = Sinks.one();
@@ -57,48 +60,55 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 	private final One<MessageConsumer<byte[]>> readyToReceiveConsumer = Sinks.one();
 	private final One<MessageConsumer<byte[]>> pingConsumer = Sinks.one();
 	private final One<Flux<Void>> pipeFlux = Sinks.one();
+	private final Empty<Void> terminatePingOverPipeFlux = Sinks.empty();
 
 	public AsyncTdMiddleEventBusServer() {
-		this.tdOptions = new AsyncTdDirectOptions(WAIT_DURATION, 15);
+		this.tdOptions = new AsyncTdDirectOptions(WAIT_DURATION, 50);
+		this.clientFactory = new TelegramClientFactory();
 	}
 
 	@Override
 	public Completable rxStart() {
-		return MonoUtils.toCompletable(Mono
+		return MonoUtils
-				.fromCallable(() -> {
+				.toCompletable(MonoUtils
-					var botId = config().getInteger("botId");
+						.fromBlockingMaybe(() -> {
-					if (botId == null || botId <= 0) {
+							logger.trace("Stating verticle");
-						throw new IllegalArgumentException("botId is not set!");
+							var botId = config().getInteger("botId");
-					}
+							if (botId == null || botId <= 0) {
-					if (this.botId.tryEmitValue(botId).isFailure()) {
+								throw new IllegalArgumentException("botId is not set!");
-						throw new IllegalStateException("Failed to set botId");
+							}
-					}
+							if (this.botId.tryEmitValue(botId).isFailure()) {
-					var botAddress = "bots.bot." + botId;
+								throw new IllegalStateException("Failed to set botId");
-					if (this.botAddress.tryEmitValue(botAddress).isFailure()) {
+							}
-						throw new IllegalStateException("Failed to set botAddress");
+							var botAddress = "bots.bot." + botId;
-					}
+							if (this.botAddress.tryEmitValue(botAddress).isFailure()) {
-					var botAlias = config().getString("botAlias");
+								throw new IllegalStateException("Failed to set botAddress");
-					if (botAlias == null || botAlias.isEmpty()) {
+							}
-						throw new IllegalArgumentException("botAlias is not set!");
+							var botAlias = config().getString("botAlias");
-					}
+							if (botAlias == null || botAlias.isEmpty()) {
-					if (this.botAlias.tryEmitValue(botAlias).isFailure()) {
+								throw new IllegalArgumentException("botAlias is not set!");
-						throw new IllegalStateException("Failed to set botAlias");
+							}
-					}
+							if (this.botAlias.tryEmitValue(botAlias).isFailure()) {
-					var local = config().getBoolean("local");
+								throw new IllegalStateException("Failed to set botAlias");
-					if (local == null) {
+							}
-						throw new IllegalArgumentException("local is not set!");
+							var local = config().getBoolean("local");
-					}
+							if (local == null) {
-					if (this.local.tryEmitValue(local).isFailure()) {
+								throw new IllegalArgumentException("local is not set!");
-						throw new IllegalStateException("Failed to set local");
+							}
-					}
+							var implementationDetails = config().getJsonObject("implementationDetails");
+							if (implementationDetails == null) {
+								throw new IllegalArgumentException("implementationDetails is not set!");
+							}
 
-					var td = new AsyncTdDirectImpl(botAlias);
+							var td = new AsyncTdDirectImpl(clientFactory, implementationDetails, botAlias);
-					if (this.td.tryEmitValue(td).isFailure()) {
+							if (this.td.tryEmitValue(td).isFailure()) {
-						throw new IllegalStateException("Failed to set td instance");
+								throw new IllegalStateException("Failed to set td instance");
-					}
+							}
-					return onSuccessfulStartRequest(td, botAddress, botAlias, botId, local);
+							return onSuccessfulStartRequest(td, botAddress, botAlias, botId, local);
-				})
+						})
-				.flatMap(Mono::hide));
+						.flatMap(Mono::hide)
+						.doOnSuccess(s -> logger.trace("Stated verticle"))
+				);
 	}
 
 	private Mono<Void> onSuccessfulStartRequest(AsyncTdDirectImpl td, String botAddress, String botAlias, int botId, boolean local) {
@@ -115,6 +125,8 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 
 	private Mono<Void> listen(AsyncTdDirectImpl td, String botAddress, String botAlias, int botId, boolean local) {
 		return Mono.<Void>create(registrationSink -> {
+			logger.trace("Preparing listeners");
+
 			MessageConsumer<ExecuteObject> executeConsumer = vertx.eventBus().consumer(botAddress + ".execute");
 			if (this.executeConsumer.tryEmitValue(executeConsumer).isFailure()) {
 				registrationSink.error(new IllegalStateException("Failed to set executeConsumer"));
@@ -126,10 +138,12 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 						executeConsumer.endHandler(h -> sink.complete());
 					})
 					.flatMap(msg -> {
+						logger.trace("Received execute request {}", msg.body());
 						var request = overrideRequest(msg.body().getRequest(), botId);
 						return td
 								.execute(request, msg.body().isExecuteDirectly())
-								.map(result -> Tuples.of(msg, result));
+								.map(result -> Tuples.of(msg, result))
+								.doOnSuccess(s -> logger.trace("Executed successfully"));
 					})
 					.handle((tuple, sink) -> {
 						var msg = tuple.getT1();
@@ -137,16 +151,21 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 						var replyOpts = new DeliveryOptions().setLocalOnly(local);
 						var replyValue = new TdResultMessage(response.result(), response.cause());
 						try {
+							logger.trace("Replying with success response");
 							msg.reply(replyValue, replyOpts);
 							sink.next(response);
 						} catch (Exception ex) {
+							logger.trace("Replying with error response: {}", ex.getLocalizedMessage());
 							msg.fail(500, ex.getLocalizedMessage());
 							sink.error(ex);
 						}
 					})
 					.then()
 					.subscribeOn(Schedulers.single())
-					.subscribe(v -> {}, ex -> logger.error("Error when processing an execute request", ex));
+					.subscribe(v -> {},
+							ex -> logger.error("Error when processing an execute request", ex),
+							() -> logger.trace("Finished handling execute requests")
+					);
 
 			MessageConsumer<byte[]> readBinlogConsumer = vertx.eventBus().consumer(botAddress + ".read-binlog");
 			if (this.readBinlogConsumer.tryEmitValue(readBinlogConsumer).isFailure()) {
@@ -163,28 +182,37 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 				registrationSink.error(new IllegalStateException("Failed to set readyToReceiveConsumer"));
 				return;
 			}
-			Flux
+
+			// Pipe  the data
+			var pipeSubscription = Flux
 					.<Message<byte[]>>create(sink -> {
 						readyToReceiveConsumer.handler(sink::next);
 						readyToReceiveConsumer.endHandler(h -> sink.complete());
 					})
+					.take(1)
+					.limitRequest(1)
+					.single()
 					.flatMap(msg -> this.pipeFlux
 							.asMono()
 							.timeout(Duration.ofSeconds(5))
 							.map(pipeFlux -> Tuples.of(msg, pipeFlux)))
-					.doOnNext(tuple -> {
+					.doOnError(ex -> logger.error("Error when processing a ready-to-receive request", ex))
+					.flatMapMany(tuple -> {
 						var opts = new DeliveryOptions().setLocalOnly(local).setSendTimeout(Duration.ofSeconds(10).toMillis());
+
 						tuple.getT1().reply(EMPTY, opts);
+						logger.trace("Replied to ready-to-receive");
 
 						// Start piping the data
-						//noinspection CallingSubscribeInNonBlockingScope
+						return tuple.getT2().doOnSubscribe(s -> {
-						tuple.getT2()
+							logger.trace("Subscribed to updates pipe");
-								.subscribeOn(Schedulers.single())
+						});
-								.subscribe();
 					})
 					.then()
+					.doOnSuccess(s -> logger.trace("Finished handling ready-to-receive requests (updates pipe ended)"))
 					.subscribeOn(Schedulers.single())
-					.subscribe(v -> {}, ex -> logger.error("Error when processing a ready-to-receive request", ex));
+					// Don't handle errors here. Handle them in pipeFlux
+					.subscribe(v -> {});
 
 			MessageConsumer<byte[]> pingConsumer = vertx.eventBus().consumer(botAddress + ".ping");
 			if (this.pingConsumer.tryEmitValue(pingConsumer).isFailure()) {
@@ -202,7 +230,10 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 					})
 					.then()
 					.subscribeOn(Schedulers.single())
-					.subscribe(v -> {}, ex -> logger.error("Error when processing a ping request", ex));
+					.subscribe(v -> {},
+							ex -> logger.error("Error when processing a ping request", ex),
+							() -> logger.trace("Finished handling ping requests")
+					);
 
 
 			//noinspection ResultOfMethodCallIgnored
@@ -212,6 +243,7 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 					.andThen(readyToReceiveConsumer.rxCompletionHandler())
 					.andThen(pingConsumer.rxCompletionHandler())
 					.subscribeOn(io.reactivex.schedulers.Schedulers.single())
+					.doOnComplete(() -> logger.trace("Finished preparing listeners"))
 					.subscribe(registrationSink::success, registrationSink::error);
 		});
 	}
@@ -268,37 +300,37 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 	}
 
 	private Mono<Void> pipe(AsyncTdDirectImpl td, String botAddress, String botAlias, int botId, boolean local) {
+		logger.trace("Preparing to pipe requests");
 		Flux<TdResultList> updatesFlux = td
 				.receive(tdOptions)
-				.flatMap(item -> Mono.defer(() -> {
+				.takeUntil(item -> {
 					if (item instanceof Update) {
 						var tdUpdate = (Update) item;
 						if (tdUpdate.getConstructor() == UpdateAuthorizationState.CONSTRUCTOR) {
-							var tdUpdateAuthorizationState = (UpdateAuthorizationState) tdUpdate;
+							var updateAuthorizationState = (UpdateAuthorizationState) tdUpdate;
-							if (tdUpdateAuthorizationState.authorizationState.getConstructor()
+							if (updateAuthorizationState.authorizationState.getConstructor() == AuthorizationStateClosed.CONSTRUCTOR) {
-									== AuthorizationStateClosed.CONSTRUCTOR) {
+								return true;
-								logger.debug("Undeploying after receiving AuthorizationStateClosed");
-								return rxStop().as(MonoUtils::toMono).thenReturn(item);
 							}
 						}
 					} else if (item instanceof Error) {
-						// An error in updates means that a fatal error occurred
+						return true;
-						logger.debug("Undeploying after receiving a fatal error");
-						return rxStop().as(MonoUtils::toMono).thenReturn(item);
 					}
-					return Mono.just(item);
+					return false;
-				}))
+				})
-				.flatMap(item -> Mono.fromCallable(() -> {
+				.flatMap(update -> Mono.fromCallable(() -> {
-					if (item.getConstructor() == TdApi.Error.CONSTRUCTOR) {
+					if (update.getConstructor() == TdApi.Error.CONSTRUCTOR) {
-						var error = (Error) item;
+						var error = (Error) update;
 						throw new TdError(error.code, error.message);
 					} else {
-						return item;
+						return update;
 					}
 				}))
 				.bufferTimeout(tdOptions.getEventsSize(), local ? Duration.ofMillis(1) : Duration.ofMillis(100))
-				.windowTimeout(1, Duration.ofSeconds(5))
+				.doFinally(signalType -> terminatePingOverPipeFlux.tryEmitEmpty())
-				.flatMap(w -> w.defaultIfEmpty(Collections.emptyList()))
+				.mergeWith(Flux
+						.interval(Duration.ofSeconds(5))
+						.map(l -> Collections.<TdApi.Object>emptyList())
+						.takeUntilOther(terminatePingOverPipeFlux.asMono()))
 				.map(TdResultList::new);
 
 		var fluxCodec = new TdResultListMessageCodec();
@@ -312,7 +344,33 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 				.sender(botAddress + ".updates", opts);
 
 		var pipeFlux = updatesFlux
-				.flatMap(update -> updatesSender.rxWrite(update).as(MonoUtils::toMono).then())
+				.flatMap(updatesList -> updatesSender
+						.rxWrite(updatesList)
+						.as(MonoUtils::toMono)
+						.thenReturn(updatesList)
+				)
+				.flatMap(updatesList -> Flux
+						.fromIterable(updatesList.value())
+						.flatMap(item -> {
+							if (item instanceof Update) {
+								var tdUpdate = (Update) item;
+								if (tdUpdate.getConstructor() == UpdateAuthorizationState.CONSTRUCTOR) {
+									var tdUpdateAuthorizationState = (UpdateAuthorizationState) tdUpdate;
+									if (tdUpdateAuthorizationState.authorizationState.getConstructor()
+											== AuthorizationStateClosed.CONSTRUCTOR) {
+										logger.debug("Undeploying after receiving AuthorizationStateClosed");
+										return rxStop().as(MonoUtils::toMono).thenReturn(item);
+									}
+								}
+							} else if (item instanceof Error) {
+								// An error in updates means that a fatal error occurred
+								logger.debug("Undeploying after receiving a fatal error");
+								return rxStop().as(MonoUtils::toMono).thenReturn(item);
+							}
+							return Mono.just(item);
+						})
+						.then()
+				)
 				.doOnTerminate(() -> updatesSender.close(h -> {
 					if (h.failed()) {
 						logger.error("Failed to close \"updates\" message sender");
@@ -324,7 +382,7 @@ public class AsyncTdMiddleEventBusServer extends AbstractVerticle {
 							.doOnError(ex2 -> logger.error("Unexpected error", ex2))
 							.then();
 				});
-		MonoUtils.emitValue(this.pipeFlux, pipeFlux);
+		return MonoUtils.emitValue(this.pipeFlux, pipeFlux)
-		return Mono.empty();
+				.doOnSuccess(s -> logger.trace("Prepared piping requests successfully"));
 	}
 }

src/main/java/it/tdlight/utils/BinlogUtils.java

@@ -69,13 +69,20 @@ public class BinlogUtils {
 				.then();
 	}
 
-	public static Mono<Void> cleanSessionPath(FileSystem vertxFilesystem, Path binlogPath, Path sessionPath) {
+	public static Mono<Void> cleanSessionPath(FileSystem vertxFilesystem,
+			Path binlogPath,
+			Path sessionPath,
+			Path mediaPath) {
 		return vertxFilesystem
 				.rxReadFile(binlogPath.toString()).as(MonoUtils::toMono)
 				.flatMap(buffer -> vertxFilesystem
 						.rxReadDir(sessionPath.toString(), "^(?!td.binlog$).*").as(MonoUtils::toMono)
 						.flatMapMany(Flux::fromIterable)
-						.doOnNext(file -> logger.debug("Deleting file {}", file))
+						.doOnNext(file -> logger.debug("Deleting session file {}", file))
+						.flatMap(file -> vertxFilesystem.rxDeleteRecursive(file, true).as(MonoUtils::toMono))
+						.then(vertxFilesystem.rxReadDir(mediaPath.toString(), "^(?!td.binlog$).*").as(MonoUtils::toMono))
+						.flatMapMany(Flux::fromIterable)
+						.doOnNext(file -> logger.debug("Deleting media file {}", file))
 						.flatMap(file -> vertxFilesystem.rxDeleteRecursive(file, true).as(MonoUtils::toMono))
 						.onErrorResume(ex -> Mono.empty())
 						.then()

src/main/java/it/tdlight/utils/MonoUtils.java

@@ -99,7 +99,7 @@ public class MonoUtils {
 	}
 
 	public static <T> Mono<T> fromBlockingMaybe(Callable<T> callable) {
-		return Mono.fromCallable(callable).subscribeOn(Schedulers.boundedElastic());
+		return Mono.fromCallable(callable).publishOn(Schedulers.boundedElastic());
 	}
 
 	public static <T> Mono<T> fromBlockingSingle(Callable<T> callable) {
@@ -471,7 +471,9 @@ public class MonoUtils {
 		@Override
 		public io.vertx.core.streams.ReadStream<T> fetch(long amount) {
 			if (fetchMode.get()) {
-				readCoreSubscription.request(amount);
+				if (amount > 0) {
+					readCoreSubscription.request(amount);
+				}
 			}
 			return this;
 		}
@@ -498,6 +500,7 @@ public class MonoUtils {
 
 		@Override
 		public void end(Handler<AsyncResult<Void>> handler) {
+			/*
 			MonoUtils.emitCompleteFuture(sink).recover(error -> {
 				if (error instanceof EmissionException) {
 					var sinkError = (EmissionException) error;
@@ -514,6 +517,8 @@ public class MonoUtils {
 					drainSubscription.dispose();
 				}
 			}).onComplete(handler);
+			 */
+			MonoUtils.emitCompleteFuture(sink).onComplete(handler);
 		}
 
 		@Override
@@ -621,7 +626,9 @@ public class MonoUtils {
 		@Override
 		public io.vertx.core.streams.ReadStream<T> fetch(long amount) {
 			if (fetchMode.get()) {
-				readCoreSubscription.request(amount);
+				if (amount > 0) {
+					readCoreSubscription.request(amount);
+				}
 			}
 			return this;
 		}