// The `wasi:http/incoming-handler` interface is meant to be exported by
// components and called by the host in response to a new incoming HTTP
// response.
//
//   NOTE: in Preview3, this interface will be merged with
//   `wasi:http/outgoing-handler` into a single `wasi:http/handler` interface
//   that takes a `request` parameter and returns a `response` result.
//
interface incoming-handler {
  use types.{incoming-request, response-outparam};

  // The `handle` function takes an outparam instead of returning its response
  // so that the component may stream its response while streaming any other
  // request or response bodies. The callee MUST write a response to the
  // `response-outparam` and then finish the response before returning. The `handle`
  // function is allowed to continue execution after finishing the response's
  // output stream. While this post-response execution is taken off the
  // critical path, since there is no return value, there is no way to report
  // its success or failure.
  handle: func(
    request: incoming-request,
    response-out: response-outparam
  );
}