I'm currently using an API Gateway to listen for web-hooks, and then the web-hook's payload is then offloaded to a lambda. The problem is that the web-hook's payload size can vary. I'm aware that API Gateway's allows for request of 10 MBs; while, lambdas allow only up to 6 MBs. Due to that, I don't want accept any payloads that exceed 6 MB. So I'm wondering if there's any way to filter out request prior to hitting my lambda that exceed 6MBs or some desired amount?
Also I've look into AWS' WAF, but that seems to only apply to request under 8KB if you use a size constraint statement. I don't think this would work in my case as I can easily see the payloads exceeding that amount.