Function requestHandler

packages/cli/src/commands/ui.ts:116–214

(req: import('node:http').IncomingMessage, res: ServerResponse)

  let apiConfigNudge: (() => void) | null = null;

  const requestHandler = (req: import('node:http').IncomingMessage, res: ServerResponse) => {
    const url = req.url?.split('?')[0];

    if (req.method === 'GET' && (url === '/' || url === '')) {
      const armed = readArmedPaneTarget(lockDir);
      if (armed && !/[\r\n]/.test(armed)) {
        clearArmedPaneTarget(lockDir);
        res.statusCode = 302;
        res.setHeader('Location', `/${armed}`);
        res.setHeader('Cache-Control', 'no-store');
        res.end();
        return;
      }
    }

    if (url === '/' || url === '') {
      req.url = '/index.html';
    }

    if (url?.startsWith('/api/')) {
      if (rejectIfNotLoopbackApi(req, res)) return;
    }

    if (url === '/api/config' && req.method === 'DELETE') {
      clearArmedPaneTarget(lockDir);
      res.setHeader('Cache-Control', 'no-store');
      res.statusCode = 204;
      res.end();
      return;
    }

    if (url === '/api/config' && (req.method === 'GET' || req.method === 'HEAD')) {
      apiConfigNudge?.();
      const lock = readServerLock(lockDir);
      const sameOriginHost = req.headers.host ?? `localhost:${resolvedPort}`;
      const collabUrl = lock && lock.port > 0 ? `ws://${sameOriginHost}/collab` : null;
      const paneTarget = readArmedPaneTarget(lockDir);
      const body = JSON.stringify({ collabUrl, previewUrl: null, port: resolvedPort, paneTarget });
      res.setHeader('Content-Type', 'application/json');
      res.setHeader('Cache-Control', 'no-store');
      res.setHeader('X-Content-Type-Options', 'nosniff');
      res.statusCode = 200;
      if (req.method === 'HEAD') {
        res.end();
      } else {
        res.end(body);
      }
      return;
    }

    if (url?.startsWith('/api/')) {
      apiConfigNudge?.();
      const lock = readServerLock(lockDir);
      if (!lock || lock.port <= 0) {
        emitProblem(
          res,
          503,
          'urn:ok:error:collab-server-not-running',