tryServe method

Future<bool> tryServe(HttpRequest req)

Attempts to serve a static file for the given HttpRequest.

Returns true if file was served or 304 sent. Returns false to continue to next middleware/router.

Security:

• Prevents path traversal (../)
• Resolves symlinks to prevent escaping root
• Only allows GET and HEAD

Implementation

Future<bool> tryServe(HttpRequest req) async {

  try {
    final method = req.method.toUpperCase();
    if (method != 'GET' && method != 'HEAD') return false;

    final rel = _sanitize(req.uri.path);
    final candidate = rel.endsWith('/') ? '${rel}index.html' : rel;

    // Try exact file
    final file = File(_join(root.path, candidate));
    if (await _serveIfExists(req, file)) return true;

    // SPA fallback
    if (spaFallback) {
      final index = File(_join(root.path, 'index.html'));
      if (await _serveIfExists(req, index)) return true;
    }

    return false;

  }catch (e) {
    return false;
  }

}