Fixed ObjectInputStream header error by reading chunks.

src/main/java/envoy/client/Receiver.java

@@ -1,5 +1,6 @@
 package envoy.client;
 
+import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 import java.io.ObjectInputStream;
 import java.net.SocketException;
@@ -10,12 +11,13 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import envoy.client.util.EnvoyLog;
+import envoy.util.SerializationUtils;
 
 /**
  * Project: <strong>envoy-client</strong><br>
  * File: <strong>Receiver.java</strong><br>
  * Created: <strong>30.12.2019</strong><br>
- * 
+ *
  * @author Kai S. K. Engelbart
  * @since Envoy v0.3-alpha
  */
@@ -36,29 +38,42 @@ public class Receiver implements Runnable {
 	@SuppressWarnings("unchecked")
 	@Override
 	public void run() {
-		try (ObjectInputStream oin = new ObjectInputStream(in)) {
-			while (true) {
-				Object obj = oin.readObject();
-				logger.finest("Received object " + obj);
 
-				// Get appropriate processor
-				@SuppressWarnings("rawtypes")
-				Consumer processor = processors.get(obj.getClass());
-				if (processor == null)
-					logger.severe(String.format("The received object has the class %s for which no processor is defined.", obj.getClass()));
-				else processor.accept(obj);
+		try {
+			while (true) {
+				// Read object length
+				byte[] lenBytes = new byte[4];
+				in.read(lenBytes);
+				int len = SerializationUtils.bytesToInt(lenBytes, 0);
+
+				// Read object into byte array
+				byte[] objBytes = new byte[len];
+				in.read(objBytes);
+
+				try (ObjectInputStream oin = new ObjectInputStream(new ByteArrayInputStream(objBytes))) {
+					Object obj = oin.readObject();
+					logger.finest("Received object " + obj);
+
+					// Get appropriate processor
+					@SuppressWarnings("rawtypes")
+					Consumer processor = processors.get(obj.getClass());
+					if (processor == null)
+						logger.severe(String.format("The received object has the class %s for which no processor is defined.", obj.getClass()));
+					else processor.accept(obj);
+				}
 			}
 		} catch (SocketException e) {
 			logger.info("Connection probably closed by client. Exiting receiver thread...");
 		} catch (Exception e) {
 			logger.log(Level.SEVERE, "Error on receiver thread", e);
+			e.printStackTrace();
 		}
 	}
 
 	/**
 	 * Adds an object processor to this {@link Receiver}. It will be called once an
 	 * object of the accepted class has been received.
-	 * 
+	 *
 	 * @param processorClass the object class accepted by the processor
 	 * @param processor      the object processor
 	 */