Function warp::filters::body::content_length_limit

pub fn content_length_limit(
    limit: u64
) -> impl Filter<Extract = (), Error = Rejection> + Copy

Require a content-length header to have a value no greater than some limit.

Rejects if content-length header is missing, is invalid, or has a number larger than the limit provided.

Example

use warp::Filter;

// Limit the upload to 4kb...
let upload = warp::body::content_length_limit(4096)
    .and(warp::body::aggregate());

Examples found in repository

examples/todos.rs (line 106)

    fn json_body() -> impl Filter<Extract = (Todo,), Error = warp::Rejection> + Clone {
        // When accepting a body, we want a JSON body
        // (and to reject huge payloads)...
        warp::body::content_length_limit(1024 * 16).and(warp::body::json())
    }

examples/body.rs (line 22)

↕

async fn main() {
    pretty_env_logger::init();

    // POST /employees/:rate  {"name":"Sean","rate":2}
    let promote = warp::post()
        .and(warp::path("employees"))
        .and(warp::path::param::<u32>())
        // Only accept bodies smaller than 16kb...
        .and(warp::body::content_length_limit(1024 * 16))
        .and(warp::body::json())
        .map(|rate, mut employee: Employee| {
            employee.rate = rate;
            warp::reply::json(&employee)
        });

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

src/filters/multipart.rs (line 87)

↕

    fn filter(&self, _: Internal) -> Self::Future {
        let boundary = super::header::header2::<ContentType>().and_then(|ct| {
            let mime = Mime::from(ct);
            let mime = mime
                .get_param("boundary")
                .map(|v| v.to_string())
                .ok_or_else(|| reject::invalid_header("content-type"));
            future::ready(mime)
        });

        let filt = super::body::content_length_limit(self.max_length)
            .and(boundary)
            .and(super::body::bytes())
            .map(|boundary, body| FormData {
                inner: Multipart::with_body(Cursor::new(body), boundary),
            });

        let fut = filt.filter(Internal);

        Box::pin(fut)
    }

examples/sse_chat.rs (line 25)

↕

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;
}