Function warp::reject::custom

source · [−]
pub fn custom<T: Reject>(err: T) -> Rejection
Expand description

Rejects a request with a custom cause.

A recover filter should convert this Rejection into a Reply, or else this will be returned as a 500 Internal Server Error.

Examples found in repository?
src/reject.rs (line 325)
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    fn from(err: T) -> Rejection {
        custom(err)
    }
More examples
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examples/rejections.rs (line 47)
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fn div_by() -> impl Filter<Extract = (NonZeroU16,), Error = Rejection> + Copy {
    warp::header::<u16>("div-by").and_then(|n: u16| async move {
        if let Some(denom) = NonZeroU16::new(n) {
            Ok(denom)
        } else {
            Err(reject::custom(DivideByZero))
        }
    })
}
examples/sse_chat.rs (line 30)
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async fn main() {
    pretty_env_logger::init();

    // Keep track of all connected users, key is usize, value
    // is an event stream sender.
    let users = Arc::new(Mutex::new(HashMap::new()));
    // Turn our "state" into a new Filter...
    let users = warp::any().map(move || users.clone());

    // POST /chat -> send message
    let chat_send = warp::path("chat")
        .and(warp::post())
        .and(warp::path::param::<usize>())
        .and(warp::body::content_length_limit(500))
        .and(
            warp::body::bytes().and_then(|body: bytes::Bytes| async move {
                std::str::from_utf8(&body)
                    .map(String::from)
                    .map_err(|_e| warp::reject::custom(NotUtf8))
            }),
        )
        .and(users.clone())
        .map(|my_id, msg, users| {
            user_message(my_id, msg, &users);
            warp::reply()
        });

    // GET /chat -> messages stream
    let chat_recv = warp::path("chat").and(warp::get()).and(users).map(|users| {
        // reply using server-sent events
        let stream = user_connected(users);
        warp::sse::reply(warp::sse::keep_alive().stream(stream))
    });

    // GET / -> index html
    let index = warp::path::end().map(|| {
        warp::http::Response::builder()
            .header("content-type", "text/html; charset=utf-8")
            .body(INDEX_HTML)
    });

    let routes = index.or(chat_recv).or(chat_send);

    warp::serve(routes).run(([127, 0, 0, 1], 3030)).await;
}