diff --git a/control/frontend/src/components/OnlineState.svelte b/control/frontend/src/components/OnlineState.svelte
index 6487800..b224b7c 100644
--- a/control/frontend/src/components/OnlineState.svelte
+++ b/control/frontend/src/components/OnlineState.svelte
@@ -1,17 +1,19 @@
 <script lang="ts">
+	import { display_status_to_info, type DisplayStatus } from "../ts/types";
+
 	let { selected, status, className = "" } = $props<{
 		selected: boolean;
-		status: string;
+		status: DisplayStatus;
         className?: string;
 	}>();
 
-	function get_text_color(selected: boolean, status: string) {
+	function get_text_color(selected: boolean, status: DisplayStatus) {
 		switch (status) {
-			case 'Online':
+			case 'app_online':
 				return selected ? 'text-green-700' : 'text-green-400';
-			case 'Lädt':
+			case 'app_offline':
 				return selected ? 'text-amber-700' : 'text-amber-400';
-			case 'Offline':
+			case 'host_offline':
 				return selected ? 'text-red-700' : 'text-red-400';
 			default:
 				return selected ? 'text-stone-700' : 'text-stone-400';
@@ -20,5 +22,5 @@
 </script>
 
 <div class="{get_text_color(selected, status)} {className} transition-colors duration-100">
-	{status}
+	{display_status_to_info(status)}
 </div>
diff --git a/control/frontend/src/routes/+page.svelte b/control/frontend/src/routes/+page.svelte
index 9789314..a39f5de 100644
--- a/control/frontend/src/routes/+page.svelte
+++ b/control/frontend/src/routes/+page.svelte
@@ -6,7 +6,7 @@
 	import DisplayView from '../components/DisplayView.svelte';
 	import SplashScreen from './../../../../shared/splash_screen.html?raw';
 	import PopUp from '../components/PopUp.svelte';
-	import type { PopupContent } from '../ts/types';
+	import { display_status_to_info, type PopupContent } from '../ts/types';
 	import TextInput from '../components/TextInput.svelte';
 	import {
 		add_display,
@@ -17,6 +17,8 @@
 		remove_display
 	} from '../ts/stores/displays';
 	import { text } from '@sveltejs/kit';
+	import { notifications } from '../ts/stores/notification';
+	import { ping_ip } from '../ts/api_handler';
 
 	const ip_regex =
 		/^(?:(?:10|127)\.(?:25[0-5]|2[0-4]\d|1?\d?\d)\.(?:25[0-5]|2[0-4]\d|1?\d?\d)\.(?:25[0-5]|2[0-4]\d|1?\d?\d)|192\.168\.(?:25[0-5]|2[0-4]\d|1?\d?\d)\.(?:25[0-5]|2[0-4]\d|1?\d?\d)|172\.(?:1[6-9]|2\d|3[0-1])\.(?:25[0-5]|2[0-4]\d|1?\d?\d)\.(?:25[0-5]|2[0-4]\d|1?\d?\d))$/;
@@ -45,14 +47,15 @@
 		return true;
 	}
 
-	function finalize_add_edit_display(existing_display_id: string|null) {
+	async function finalize_add_edit_display(existing_display_id: string | null) {
 		const ip = text_inputs_valid.ip.value;
 		const mac = text_inputs_valid.mac.value === '' ? null : text_inputs_valid.mac.value;
 		const name = text_inputs_valid.name.value;
 		if (!!existing_display_id) {
 			edit_display_data(existing_display_id, ip, mac, name);
 		} else {
-			add_display(ip, mac, name, 'Online');
+			const status = await ping_ip(text_inputs_valid.ip.value);
+			add_display(ip, mac, name, status);
 		}
 		popup_close_function();
 	}
@@ -153,8 +156,14 @@
 			className="grow"
 		/>
 		<div class="flex items-end shrink-0">
-			<Button disabled={!text_inputs_valid.ip.valid} className="px-4 gap-2" bg="bg-stone-750"
-				><Radio /> Ping</Button
+			<Button
+				disabled={!text_inputs_valid.ip.valid}
+				className="px-4 gap-2"
+				bg="bg-stone-750"
+				click_function={async () => {
+					const status = await ping_ip(text_inputs_valid.ip.value);
+					notifications.push('info', `Ping '${text_inputs_valid.ip.value}'`, `Aktueller Zustand: ${display_status_to_info(status)}`);
+				}}><Radio /> Ping</Button
 			>
 		</div>
 	</div>
diff --git a/control/frontend/src/ts/api_handler.ts b/control/frontend/src/ts/api_handler.ts
index 193996f..831d7b6 100644
--- a/control/frontend/src/ts/api_handler.ts
+++ b/control/frontend/src/ts/api_handler.ts
@@ -1,14 +1,16 @@
-import type { FolderElement } from "./types";
+import { notifications } from "./stores/notification";
+import { to_display_status, type DisplayStatus, type FolderElement } from "./types";
 import { get_uuid } from "./utils";
 
 export async function get_screenshot(ip: string) {
     const options = { method: 'PATCH' };
-    return await request(ip, '/takeScreenshot', options);
+    return await request_display(ip, '/takeScreenshot', options);
 }
 
-export async function open_file(ip: string, path_to_file: string) {
+export async function open_file(ip: string, path_to_file: string): Promise<boolean> {
     const options = { method: 'PATCH', headers: { 'content-type': 'application/octet-stream' } };
-    const raw_response = await request(ip, `/file${path_to_file}`, options);
+    const raw_response = await request_display(ip, `/file${path_to_file}`, options);
+    return !!raw_response;
 }
 
 export async function get_file_data(ip: string, path: string): Promise<FolderElement[]> {
@@ -34,7 +36,8 @@ export async function get_file_data(ip: string, path: string): Promise<FolderEle
 done
 ` })
     };
-    const raw_response = await request(ip, '/shellCommand', options);
+    const raw_response = await request_display(ip, '/shellCommand', options);
+    if (!raw_response) return [];
     const response: FileInfo[] = raw_response.stdout.trim()
         .split("\n")
         .filter(Boolean)
@@ -62,12 +65,32 @@ done
 
 
 
+export async function ping_ip(ip: string): Promise<DisplayStatus> {
+    const raw_response = await request_control(`/ping?ip=${ip}`, { method: 'GET' });
+    console.log(raw_request);
+    if (!raw_response) return null;
+    return raw_response.status ? to_display_status(raw_response.status) : null;
+}
 
-async function request(ip: string, api_route: string, options: { method: string, headers?: Record<string, string>, body?: any }) {
+
+
+
+async function request_display(ip: string, api_route: string, options: { method: string, headers?: Record<string, string>, body?: any }): Promise<null | any> {
+    const url = `http://${ip}:1323/api${api_route}`;
+    return await raw_request(url, options);
+}
+
+async function request_control(api_route: string, options: { method: string, headers?: Record<string, string>, body?: any }): Promise<null | any> {
+    const url = `${window.location.origin}/api${api_route}`;
+    return await raw_request(url, options);
+}
+
+
+async function raw_request(url: string, options: { method: string, headers?: Record<string, string>, body?: any }): Promise<null | any> {
     try {
-        const url = `http://${ip}:1323/api${api_route}?t=${Date.now()}`;
-        console.log(url)
-        const response = await fetch(url, options);
+        const cache_buster = `${url.includes('?') ? '&' : '?'}=${Date.now()}`;
+        console.log(url + cache_buster)
+        const response = await fetch(url + cache_buster, options);
         if (!response.ok) {
             console.error(`HTTP error! Status: ${response.status}`);
         }
@@ -75,9 +98,14 @@ async function request(ip: string, api_route: string, options: { method: string,
         if (!contentType.includes("application/json")) {
             return await response.blob();
         } else {
-            return await response.json();
+            const json = await response.json();
+            if (json.error && json.error !== '') {
+                notifications.push("error", `Fehler bei Anfrage '${url}'`, json.error);
+            }
+            return json;
         }
     } catch (error) {
         console.error(error);
+        return null;
     }
 }
\ No newline at end of file
diff --git a/control/frontend/src/ts/stores/displays.ts b/control/frontend/src/ts/stores/displays.ts
index beffe48..199460e 100644
--- a/control/frontend/src/ts/stores/displays.ts
+++ b/control/frontend/src/ts/stores/displays.ts
@@ -1,5 +1,5 @@
 import { get, writable, type Writable } from "svelte/store";
-import type { Display, DisplayGroup } from "../types";
+import type { Display, DisplayGroup, DisplayStatus } from "../types";
 import { is_selected, select, selected_display_ids } from "./select";
 import { get_uuid, image_content_hash } from "../utils";
 import { get_screenshot } from "../api_handler";
@@ -17,7 +17,7 @@ export function is_display_name_taken(name: string): boolean {
     );
 }
 
-export function add_display(ip: string, mac: string | null, name: string, status: string) {
+export function add_display(ip: string, mac: string | null, name: string, status: DisplayStatus) {
     displays.update((displays: DisplayGroup[]) => {
         displays[0].data.push({ id: get_uuid(), ip, preview_url: null, preview_timeout_id: null, mac, name, status });
         return displays;
@@ -164,6 +164,6 @@ function add_testing_displays() {
     //     add_display("127.0.0.1", "00:1A:2B:3C:4D:5E", name, "Offline");
     // }
 
-    add_display("127.0.0.1", "00:1A:2B:3C:4D:5E", "PC", "Offline");
+    add_display("127.0.0.1", "00:1A:2B:3C:4D:5E", "PC", "host_offline");
     // add_display("192.168.178.111", "D4:81:D7:C0:DF:3C", "Laptop", "Online");
 }
\ No newline at end of file
diff --git a/control/frontend/src/ts/types.ts b/control/frontend/src/ts/types.ts
index 0cf2c01..606dd96 100644
--- a/control/frontend/src/ts/types.ts
+++ b/control/frontend/src/ts/types.ts
@@ -63,7 +63,7 @@ export type Display = {
     preview_timeout_id: number | null;
     mac: string | null;
     name: string;
-    status: string;
+    status: DisplayStatus;
 }
 
 export type DisplayGroup = {
@@ -88,4 +88,25 @@ export type PopupContent = {
     title_class?: string;
     title_icon?: typeof X | null;
     closable?: boolean;
+}
+
+export type DisplayStatus = "host_offline" | "app_offline" | "app_online" | null;
+
+export function to_display_status(value: string): DisplayStatus {
+    return ["host_offline", "app_offline", "app_online"].includes(value)
+        ? (value as DisplayStatus)
+        : null;
+}
+
+export function display_status_to_info(status: DisplayStatus): string {
+    switch (status) {
+        case 'app_online':
+            return 'Online';
+        case 'app_offline':
+            return 'Lädt';
+        case 'host_offline':
+            return 'Offline';
+        case null:
+            return '???';
+    }
 }
\ No newline at end of file