Partial commit 2. Changes include:

- Added keeping of the last 25 lines (or exception traces in the case of errors) of log, to make identifying issue easier.

src/main/java/net/doubledoordev/backend/TestMain.java

@@ -19,23 +19,64 @@
 package net.doubledoordev.backend;
 
 import net.doubledoordev.backend.server.query.MCQuery;
-import net.doubledoordev.backend.server.query.QueryResponse;
+
+import java.io.IOException;
+import java.time.Instant;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Timer;
+import java.util.TimerTask;
 
 public class TestMain
 {
     public static void main(String[] args) throws Exception
     {
-        MCQuery query = new MCQuery("vps2.dries007.net", 25569);
-        QueryResponse queryResponse;
-        while (true)
+//        testMCQuery();
+        testTaskStuff();
+    }
+
+    private static void testTaskStuff()
+    {
+        Timer timer = new Timer();
+
+//        timer.schedule();
+
+//        Calendar now = Calendar.getInstance();
+        Date now = Date.from(Instant.now());
+//        Instant now = Instant.now();
+
+
+        timer.scheduleAtFixedRate(new Task(), 0, 1000 * 10); // 10 sec
+    }
+
+    private static class Task extends TimerTask
+    {
+        @Override
+        public void run()
         {
-            queryResponse = query.fullStat();
-            if (queryResponse != null) System.out.println(queryResponse.toString());
-            else System.out.println("null");
-            synchronized (Thread.currentThread())
+            System.out.println("Task run()");
+
+            Calendar now = Calendar.getInstance();
+        }
+    }
+
+    private static void testMCQuery() throws IOException
+    {
+        System.out.println(new MCQuery("vps2.dries007.net", 25501).fullStat());
+    }
+
+    private static void sleep1sec()
+    {
+        synchronized (Thread.currentThread())
+        {
+            try
             {
                 Thread.currentThread().wait(1000);
             }
+            catch (InterruptedException ignored)
+            {
+
+            }
         }
     }
 }

src/main/java/net/doubledoordev/backend/server/Server.java

@@ -18,6 +18,7 @@
 
 package net.doubledoordev.backend.server;
 
+import com.google.common.collect.EvictingQueue;
 import com.google.gson.JsonObject;
 import com.google.gson.annotations.Expose;
 import net.doubledoordev.backend.Main;
@@ -70,6 +71,7 @@ public class Server
      */
     public int[] size = new int[3];
     public QueryResponse cachedResponse;
+    public EvictingQueue<String> lastConsoleLines = EvictingQueue.create(25);
 
     @Expose
     private String ID;
@@ -1039,6 +1041,7 @@ public void printLine(String line)
     {
         line = Helper.stripColor(line);
         logger.info(line);
+        lastConsoleLines.add(line);
         ServerconsoleSocketApplication.sendLine(this, line);
     }
 
@@ -1047,6 +1050,7 @@ public void error(Throwable e)
         logger.catching(e);
         StringWriter error = new StringWriter();
         e.printStackTrace(new PrintWriter(error));
+        lastConsoleLines.add(error.toString());
         ServerconsoleSocketApplication.sendLine(this, error.toString());
     }
 

src/main/java/net/doubledoordev/backend/web/socket/ServerWebSocketApplication.java

@@ -56,20 +56,14 @@ public void onConnect(WebSocket socket)
         }
         ((DefaultWebSocket) socket).getUpgradeRequest().setAttribute(USER, session.getAttribute(USER));
         String[] serverName = ((DefaultWebSocket) socket).getUpgradeRequest().getPathInfo().substring(1).split("/");
-        if (Strings.isNullOrEmpty(serverName[0]) || Strings.isNullOrEmpty(serverName[0]))
-        {
-            WebSocketHelper.sendError(socket, "No valid server.");
-            socket.close();
-            return;
-        }
         Server server = Settings.getServerByName(serverName[0]);
-        if (server == null)
+        if (Strings.isNullOrEmpty(serverName[0]) || server == null)
         {
             WebSocketHelper.sendError(socket, "No valid server.");
             socket.close();
             return;
         }
-        else if (!server.canUserControl((User) ((DefaultWebSocket) socket).getUpgradeRequest().getAttribute(USER)))
+        if (!server.canUserControl((User) ((DefaultWebSocket) socket).getUpgradeRequest().getAttribute(USER)))
         {
             WebSocketHelper.sendError(socket, "You have no rights to this server.");
             socket.close();

src/main/java/net/doubledoordev/backend/web/socket/ServerconsoleSocketApplication.java

@@ -62,6 +62,16 @@ public static void sendLine(Server server, String line)
         }
     }
 
+    @Override
+    public void onConnect(WebSocket socket)
+    {
+        super.onConnect(socket);
+        for (String line : ((Server) ((DefaultWebSocket) socket).getUpgradeRequest().getAttribute(SERVER)).lastConsoleLines)
+        {
+            WebSocketHelper.sendData(socket, line);
+        }
+    }
+
     @Override
     public void onMessage(WebSocket socket, String text)
     {