Added missing Methods

src/main/java/dev/unlegitdqrk/unlegitlibrary/network/system/client/NetworkClient.java

@@ -269,6 +269,36 @@ public class NetworkClient {
         udpPort = -1;
     }
 
+    /**
+     * @return true if the TCP connection is established
+     */
+    public boolean isTCPConnected() {
+        return tcpSocket != null && tcpSocket.isConnected() && !tcpSocket.isClosed();
+    }
+
+    /**
+     * @return true if the UDP connection is established
+     */
+    public boolean isUDPConnected() {
+        return isUDPEnabled() && udpChannel != null && udpChannel.isConnected() && udpChannel.isOpen();
+    }
+
+    /**
+     * @return true if TCP is connected and (if enabled) UDP is connected
+     */
+    public boolean isConnected() {
+        if (!isTCPConnected()) return false;
+        if (isUDPEnabled()) return isUDPConnected();
+        return true;
+    }
+
+    /**
+     * @return true if UDP is enabled for this client
+     */
+    public boolean isUDPEnabled() {
+        return udpPort != -1;
+    }
+
 
     /**
      * Builder for {@link NetworkClient}.

src/main/java/dev/unlegitdqrk/unlegitlibrary/network/system/server/ConnectedClient.java

@@ -154,6 +154,11 @@ public class ConnectedClient {
         return isUDPEnabled() && isTCPConnected() && udpChannel != null && udpChannel.isOpen();
     }
 
+    public boolean isConnected() {
+        if (!isTCPConnected()) return false;
+        return isUDPEnabled() && isUDPConnected();
+    }
+
     public UUID getUniqueID() {
         return uniqueID;
     }

src/main/java/dev/unlegitdqrk/unlegitlibrary/network/system/server/NetworkServer.java

@@ -246,6 +246,21 @@ public class NetworkServer {
         return udpPort != -1;
     }
 
+    /**
+     * Checks if the server is currently online.
+     * If UDP is enabled, the UDP channel must be open as well.
+     *
+     * @return true if TCP is open and (if enabled) UDP is open
+     */
+    public boolean isServerOnline() {
+        boolean tcpOnline = tcpSocket != null && !tcpSocket.isClosed() && tcpSocket.isBound();
+        if (!tcpOnline) return false;
+        if (isUDPEnabled()) {
+            return udpChannel != null && udpChannel.isOpen();
+        }
+        return true;
+    }
+
     /**
      * @return packet handler
      */