I need to a way to access the body of a request as a raw string. Plug supports this functionality (https://github.com/elixir-lang/plug/blob/master/lib/plug/conn.ex#L418-L448) but as the docs say this can only be done once. Once the body is consumed, trying to read the body will result in an empty string.

I believe that if you use a Phoenix controller, reading the body as string is impossible. If a client sends a request with the content-type set to application/json Phoenix will automatically parse the body as params meaning any future attempts by client code to access the body will result in an empty string.

Is there any way for client code inside of a controller to access the body as a raw string?