Initial commit: ToolCTRL Landing Page
Statische Landing Page mit Lead-Formular, Impressum und Datenschutzerklärung, ausgeliefert von einem abhängigkeitsfreien Node-Server mit lokaler Lead-Erfassung. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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/* ============================================================
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ToolCTRL — Landing Page Server
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Abhängigkeitsfrei (nur Node-Standardbibliothek).
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Liefert /public und nimmt Leads unter POST /api/lead entgegen.
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============================================================ */
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"use strict";
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const http = require("http");
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const fs = require("fs");
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const path = require("path");
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const ROOT = __dirname;
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const PUBLIC_DIR = path.join(ROOT, "public");
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const LEADS_DIR = path.join(ROOT, "leads");
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const LEADS_JSON = path.join(LEADS_DIR, "leads.ndjson");
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const LEADS_CSV = path.join(LEADS_DIR, "leads.csv");
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/* Bevorzugte Ports — der erste freie wird genutzt. */
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const PORT_CANDIDATES = [4317, 4318, 4417, 5317, 8317, 0];
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const HOST = "127.0.0.1";
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const MIME = {
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".html": "text/html; charset=utf-8",
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".css": "text/css; charset=utf-8",
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".js": "text/javascript; charset=utf-8",
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".svg": "image/svg+xml",
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".png": "image/png",
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".jpg": "image/jpeg",
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".jpeg": "image/jpeg",
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".ico": "image/x-icon",
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".json": "application/json; charset=utf-8",
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".woff2": "font/woff2"
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};
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/* ---------- Lead-Speicher vorbereiten ---------- */
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function ensureLeadStore() {
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if (!fs.existsSync(LEADS_DIR)) fs.mkdirSync(LEADS_DIR, { recursive: true });
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if (!fs.existsSync(LEADS_CSV)) {
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fs.writeFileSync(
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LEADS_CSV,
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"zeitpunkt,name,firma,email,telefon,nachricht,quelle\n",
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"utf8"
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);
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}
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}
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function csvCell(value) {
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const s = String(value == null ? "" : value);
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return '"' + s.replace(/"/g, '""').replace(/\r?\n/g, " ") + '"';
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}
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function saveLead(lead) {
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ensureLeadStore();
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fs.appendFileSync(LEADS_JSON, JSON.stringify(lead) + "\n", "utf8");
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const row = [
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lead.zeitpunkt,
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lead.name,
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lead.firma,
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lead.email,
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lead.telefon,
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lead.nachricht,
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lead.quelle
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]
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.map(csvCell)
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.join(",");
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fs.appendFileSync(LEADS_CSV, row + "\n", "utf8");
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}
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/* ---------- Statische Dateien ---------- */
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function serveStatic(req, res) {
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let urlPath = decodeURIComponent(req.url.split("?")[0]);
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if (urlPath === "/") urlPath = "/index.html";
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/* Path-Traversal verhindern */
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const filePath = path.normalize(path.join(PUBLIC_DIR, urlPath));
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if (!filePath.startsWith(PUBLIC_DIR)) {
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res.writeHead(403).end("Forbidden");
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return;
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}
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fs.stat(filePath, (err, stat) => {
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if (err || !stat.isFile()) {
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res.writeHead(404, { "Content-Type": "text/html; charset=utf-8" });
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res.end("<h1>404</h1><p>Seite nicht gefunden.</p>");
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return;
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}
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const ext = path.extname(filePath).toLowerCase();
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res.writeHead(200, {
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"Content-Type": MIME[ext] || "application/octet-stream",
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"Cache-Control": "no-cache"
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});
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fs.createReadStream(filePath).pipe(res);
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});
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}
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/* ---------- Lead-Endpunkt ---------- */
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function handleLead(req, res) {
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let body = "";
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let tooLarge = false;
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req.on("data", (chunk) => {
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body += chunk;
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if (body.length > 64 * 1024) {
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tooLarge = true;
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req.destroy();
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}
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});
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req.on("end", () => {
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if (tooLarge) return sendJSON(res, 413, { error: "Anfrage zu groß." });
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let data;
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try {
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data = JSON.parse(body || "{}");
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} catch (e) {
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return sendJSON(res, 400, { error: "Ungültiges Format." });
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}
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/* Honeypot — befülltes Feld = Bot. Still mit OK quittieren. */
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if (data.website && String(data.website).trim() !== "") {
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return sendJSON(res, 200, { ok: true });
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}
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const name = String(data.name || "").trim();
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const email = String(data.email || "").trim();
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const nachricht = String(data.nachricht || "").trim();
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if (!name || !email || !nachricht) {
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return sendJSON(res, 400, {
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error: "Bitte Name, E-Mail und Nachricht angeben."
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});
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}
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if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
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return sendJSON(res, 400, { error: "Bitte eine gültige E-Mail angeben." });
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}
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const lead = {
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zeitpunkt: new Date().toISOString(),
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name: name.slice(0, 200),
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firma: String(data.firma || "").trim().slice(0, 200),
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email: email.slice(0, 200),
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telefon: String(data.telefon || "").trim().slice(0, 80),
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nachricht: nachricht.slice(0, 4000),
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quelle: String(data.quelle || "Landing Page").slice(0, 120)
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};
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try {
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saveLead(lead);
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} catch (e) {
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console.error("[lead] Speichern fehlgeschlagen:", e.message);
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return sendJSON(res, 500, {
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error: "Speichern fehlgeschlagen. Bitte später erneut versuchen."
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});
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}
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console.log(
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"[lead] " + lead.zeitpunkt + " — " + lead.name +
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(lead.firma ? " (" + lead.firma + ")" : "") + " <" + lead.email + ">"
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);
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sendJSON(res, 200, { ok: true });
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});
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}
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function sendJSON(res, code, obj) {
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res.writeHead(code, { "Content-Type": "application/json; charset=utf-8" });
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res.end(JSON.stringify(obj));
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}
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/* ---------- Router ---------- */
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const server = http.createServer((req, res) => {
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const route = req.url.split("?")[0];
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if (route === "/api/lead") {
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if (req.method !== "POST") {
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return sendJSON(res, 405, { error: "Methode nicht erlaubt." });
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}
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return handleLead(req, res);
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}
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if (req.method !== "GET" && req.method !== "HEAD") {
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res.writeHead(405).end("Method Not Allowed");
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return;
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}
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serveStatic(req, res);
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});
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/* ---------- Freien Port suchen und starten ---------- */
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function listen(candidates) {
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if (candidates.length === 0) {
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console.error("Kein freier Port gefunden.");
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process.exit(1);
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}
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const port = candidates[0];
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server.once("error", (err) => {
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if (err.code === "EADDRINUSE") {
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console.log("Port " + port + " belegt — versuche nächsten …");
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listen(candidates.slice(1));
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} else {
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console.error("Serverfehler:", err.message);
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process.exit(1);
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}
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});
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server.listen(port, HOST, () => {
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const actual = server.address().port;
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ensureLeadStore();
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console.log("");
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console.log(" ToolCTRL — Landing Page läuft");
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console.log(" ----------------------------------------");
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console.log(" URL: http://" + HOST + ":" + actual);
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console.log(" Leads: " + LEADS_CSV);
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console.log(" " + LEADS_JSON);
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console.log(" Stop: Strg + C");
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console.log("");
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});
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}
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listen(PORT_CANDIDATES);
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