Body Size Limits

Bklar supports a framework-level maxBodySize option to reject oversized request bodies early, returning 413 Payload Too Large.

Configuration

Set maxBodySize (in bytes) when creating your app:

const app = Bklar({
  maxBodySize: 1024 * 1024, // 1MB
});

How It Works

Two layers of protection:

1. Content-Length check — If the Content-Length header exceeds maxBodySize, the request is rejected immediately with 413, before any body is read.

2. Streaming body check — When a body schema triggers parseBody(), the framework reads the stream in chunks, tracking total bytes. If the limit is exceeded mid-stream, the reader is canceled and 413 is returned.

Error Response

{
  "error": "Payload Too Large",
  "message": "Request body exceeds size limit",
  "statusCode": 413
}