[RM-84612] Corrected after review

build.gradle

@@ -211,8 +211,6 @@ jar {
 	archivesBaseName = applicationName
 	manifest {
 		attributes('Specification-Title': 'TH2 Hand')
-		attributes('Main-Class': 'com.exactpro.th2.hand.Application')
-		attributes("Class-Path": configurations.compileClasspath.collect { "lib/" + it.getName() }.join(' '))
 		attributes(
 				'Created-By':               "${System.getProperty('java.version')} (${System.getProperty('java.vendor')})",
 				'Specification-Title':      '',

src/main/java/com/exactpro/th2/hand/HandServer.java

@@ -66,7 +66,7 @@ public void start() throws IOException {
 			server.start();
 			LOGGER.info("Server started, listening on port {}", server.getPort());
 		} else {
-			throw new IllegalStateException(getClass().getSimpleName() + " was started once");
+			throw new IllegalStateException(getClass().getSimpleName() + " is already started");
 		}
 	}
 
@@ -94,6 +94,7 @@ public void close() throws InterruptedException {
 		Thread thread = watcher.get();
 		if (thread != null && !thread.isInterrupted()) {
 			thread.interrupt();
+			thread.join(30_000);
 		}
 	}
 }

src/main/java/com/exactpro/th2/hand/services/HandBaseService.java

@@ -92,18 +92,13 @@ public void dispose() {
 		}
 	}
 
-	/**
-	 * @throws RhConfigurationException
-	 */
-	@SuppressWarnings("JavadocDeclaration")
 	@Override
 	public RhSessionID register(RhTargetServer targetServer) {
         try {
 			String sessionId = messageHandler.getRhConnectionManager().createSessionHandler(targetServer.getTarget()).getId();
 			return RhSessionID.newBuilder().setId(sessionId).setSessionAlias(messageHandler.getConfig().getSessionAlias()).build();
 		} catch (RhConfigurationException e) {
-			sneakyThrow(e);
-			return null;
+			throw new HandRuntimeException(e.getMessage(), e);
 		}
 	}
 
@@ -123,28 +118,17 @@ public Empty unregister(RhSessionID input, Map<String, String> properties) {
 		return unregister(input);
 	}
 
-	/**
-	 * @throws IOException
-	 */
-	@SuppressWarnings("JavadocDeclaration")
 	@Override
 	public RhBatchResponse executeRhActionsBatch(RhActionsBatch request) {
         try {
             return messageHandler.handleActionsBatchRequest(request);
         } catch (IOException e) {
-			sneakyThrow(e);
-			return null;
+			throw new HandRuntimeException(e.getMessage(), e);
         }
     }
 
 	@Override
 	public RhBatchResponse executeRhActionsBatch(RhActionsBatch input, Map<String, String> properties) {
 		return executeRhActionsBatch(input);
 	}
-
-	// This hack is used to avoid wrapping cause error
-	private static <E extends Throwable> void sneakyThrow(Throwable e) throws E {
-		//noinspection unchecked
-		throw (E) e;
-	}
 }

src/main/kotlin/com/exactpro/th2/hand/services/HandRuntimeException.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2024 Exactpro (Exactpro Systems Limited)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.exactpro.th2.hand.services
+
+class HandRuntimeException(message: String, cause: Throwable) : RuntimeException(message, cause)