open H2

let request_handler : Unix.sockaddr -> Reqd.t -> unit =
 fun _client_address request_descriptor ->
  let request = Reqd.request request_descriptor in
  let response_content_type =
    match Headers.get request.headers "Content-Type" with
    | Some request_content_type -> request_content_type
    | None -> "text/plain"
  in
  let response =
    Response.create
      ~headers:(Headers.of_list [ "content-type", response_content_type ])
      `OK
  in
  Reqd.respond_with_string
    request_descriptor
    response
    "Welcome to an ALPN-negotiated HTTP/2 connection"

let error_handler :
     Unix.sockaddr
    -> ?request:H2.Request.t
    -> _
    -> (Headers.t -> Body.Writer.t)
    -> unit
  =
 fun _client_address ?request:_ _error start_response ->
  let response_body = start_response Headers.empty in
  Body.Writer.close response_body