isRateLimited method

Future<bool> isRateLimited(
  1. String clientIp
)

Checks if the client IP address is rate-limited.

This function first checks if the given clientIp is in the blocked list using the IP blocker. If the IP is blocked, it returns true. Otherwise, it checks the number of requests associated with the clientIp. If the number of requests exceeds the maxRequests within the resetDuration, the function returns true, indicating that the IP is rate-limited. Otherwise, it records the current request and returns false.

  • Parameters:

    • clientIp: The IP address of the client to check for rate limiting.

  • Returns: A Future that resolves to true if the IP is rate-limited, or false if the IP is not rate-limited.

Implementation

Future<bool> isRateLimited(String clientIp) async {
  if (ipBlocker.isIpBlocked(clientIp)) {
    return true;
  }
  final now = DateTime.now();
  _requests[clientIp] ??= [];
  _requests[clientIp]!
      .removeWhere((time) => now.difference(time) > resetDuration);
  if (_requests[clientIp]!.length < maxRequests) {
    _requests[clientIp]!.add(now);
    _saveRequests();
    return false;
  }
  return true;
}