拦截和修改请求体

Question

In a request body object that I expect in my POST endpoint there are three fields, let's say A, B, C. Users can pass: 1. Both A and B 2. Only C.

In the second case (when only C is provided) I need to retrieve A and B from mapping in a database and add these to the request body to be validated later in my custom authorization filter.

I've tried two thins - creating another authorization filter and delegate handler. I managed to get the A and B from a database, but I don't know how to add them to the request body. Also, once the request body stream was read it couldn't be used again in the validation function.

Answer 1

I'll go out on a limb and say that you shouldn't be looking to modify the incoming request. Instead change the code in your 'custom authorization filter' to retrieve fields A and B when only C is provided.