Timeout related classes and functionality added.

src/main/java/vslab1/src/Timeout/JobList.java

@@ -0,0 +1,7 @@
+package vslab1.src.Timeout;
+
+import java.util.LinkedList;
+
+public class JobList extends LinkedList<TimeoutJob> {
+    
+}

src/main/java/vslab1/src/Timeout/TimeoutJob.java

@@ -0,0 +1,7 @@
+package vslab1.src.Timeout;
+
+import vslab1.src.Peers.Peer;
+
+public record TimeoutJob(long currentSystemTimeMillis, Peer peerToWaitFor) {
+    
+}

src/main/java/vslab1/src/Timeout/TimeoutThread.java

@@ -0,0 +1,42 @@
+package vslab1.src.Timeout;
+
+import vslab1.src.Terminatable;
+import vslab1.src.FileReaderWriter.FileReaderWriter;
+import vslab1.src.Peers.EOnlineState;
+import vslab1.src.Peers.Peer;
+
+public class TimeoutThread extends Thread implements Terminatable {
+
+    private boolean timeoutThreadRunning = true;
+
+    private JobList jobQueue = null;
+
+    public TimeoutThread(JobList jobQueue) {
+        this.jobQueue = jobQueue;
+    }
+
+    @Override
+    public void run() {
+        while (timeoutThreadRunning) {
+            try {
+                sleep(1000);
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+            for (TimeoutJob timeoutJob : jobQueue) {
+                if (System.currentTimeMillis() - timeoutJob.currentSystemTimeMillis() >= 3000) {
+                    String ipAddress = timeoutJob.peerToWaitFor().ipAddress();
+                    int port = timeoutJob.peerToWaitFor().port();
+                    Peer unreachablePeer = new Peer(ipAddress, port, null, EOnlineState.Offline);
+                    FileReaderWriter.updatePeer(unreachablePeer);
+                }
+            }
+        }
+    }
+
+    @Override
+    public void terminate() {
+        timeoutThreadRunning = false;
+        this.interrupt();
+    }
+}