Enum MiddlewareResponse 

pub enum MiddlewareResponse {
    Next(IO),
    Cancel(IO),
}

Represents the possible outcomes of a middleware execution.

A middleware can either allow the request to continue processing (Next) or stop further processing and return a response immediately (Cancel).

Variants

Next(IO)

Continues to the next middleware or the endpoint if no more middlewares are left.

The IO instance passed will be forwarded to the next middleware or the endpoint.

Cancel(IO)

Cancels the request processing and immediately returns a response to the client.

The IO instance provided will be used as the final response.