Improves the debugging messages some.

There is something up with the browser interface, and these can help me troubleshoot.

browserCommands/src/main/java/edu/regis/universeplayer/browserCommands/CommandConfirmation.java

@@ -76,6 +76,15 @@ public class CommandConfirmation implements Serializable
      */
     public String getMessage()
     {
-        return this.errorCode != null ? this.errorCode.getMessage() : this.message;
+        return this.errorCode != null ? this.errorCode
+                .getMessage() : this.message;
+    }
+
+    @Override
+    public String toString()
+    {
+        return "CommandConfirmation{" +
+                "message='" + this.getMessage() + '\'' +
+                '}';
     }
 }

browserCommands/src/main/java/edu/regis/universeplayer/browserCommands/CommandReturn.java

@@ -58,4 +58,13 @@ public class CommandReturn<T> implements Serializable
     {
         return this.confirmation;
     }
+
+    @Override
+    public String toString()
+    {
+        return "CommandReturn{" +
+                "returnValue=" + returnValue +
+                ", confirmation=" + confirmation +
+                '}';
+    }
 }

browserCommands/src/main/java/edu/regis/universeplayer/browserCommands/MessageHandler.java

@@ -171,7 +171,8 @@ public class MessageHandler implements Runnable, MessageSerializer
                             }
                             catch (IOException e)
                             {
-                                logger.error("Could not send response message for" + update, e);
+                                logger.error("Could not send response message" +
+                                        " for " + update, e);
                                 running = false;
                             }
                         }

browserCommands/src/main/java/edu/regis/universeplayer/browserCommands/MessageRunner.java

@@ -10,6 +10,7 @@ import org.slf4j.LoggerFactory;
 import java.io.*;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedList;
 import java.util.concurrent.ExecutionException;
@@ -145,7 +146,16 @@ public abstract class MessageRunner implements Runnable, MessageSerializer
                                 /*
                                  * Not a response, just a generic update.
                                  */
-                                Object ob = deserializeObject(returnMessage[1]);
+                                Object ob;
+                                try
+                                {
+                                    ob = deserializeObject(returnMessage[1]);
+                                }
+                                catch (IOException e)
+                                {
+                                    throw new IOException("Could not " +
+                                            "deserialize " + Arrays.toString(returnMessage[1]), e);
+                                }
                                 this.triggerUpdateListeners(ob);
                                 logger.debug("Received update {}", ob);
                             }

browserCommands/src/main/java/edu/regis/universeplayer/browserCommands/MessageSerializer.java

@@ -5,9 +5,11 @@
 package edu.regis.universeplayer.browserCommands;
 
 import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.*;
 import java.nio.ByteBuffer;
+import java.util.Arrays;
 
 public interface MessageSerializer
 {
@@ -43,6 +45,10 @@ public interface MessageSerializer
      */
     default Object deserializeObject(byte[] message) throws IOException, ClassNotFoundException
     {
+        if (message == null || message.length == 0)
+        {
+            return null;
+        }
         try (ByteArrayInputStream byteStream = new ByteArrayInputStream(message))
         {
             try (ObjectInputStream stream = new ObjectInputStream(byteStream))
@@ -125,7 +131,16 @@ public interface MessageSerializer
                     .error("Malformed message, could not get message length.");
             return null;
         }
+        try
+        {
             message = new byte[lengthBuffer.getInt()];
+        }
+        catch (NegativeArraySizeException e)
+        {
+            throw new IOException("Invalid array size for message " + Arrays
+                    .toString(messageNum)
+                    , e);
+        }
         /*
          * Writes the message
          */