seanmonstar/warp · error · PayloadTooLarge

payload_too_large

Error message

payload_too_large

What it means

warp::body::content_length_limit(limit) rejects the request with a 413 Payload Too Large rejection when the request's Content-Length header exceeds the configured limit. It is a generic guard comparing the declared body size against `limit`; if the Content-Length header is absent entirely, the filter instead yields a 411 Length Required rejection.

Solutions

1. Raise the limit passed to content_length_limit to accommodate legitimate large uploads
2. Compress or chunk large request bodies client-side before uploading
3. Have the client set a correct Content-Length and trim the payload to the allowed size
4. Handle the 413 rejection with .recover() and return a clear error message stating the maximum accepted size

When it happens

Trigger: Thrown at src/filters/body.rs:61 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of seanmonstar/warp@ff34d7213e (2026-09-09). Data as JSON: /api/errors/598139005a01e20e. Report an issue: GitHub.

Appendix: source

Thrown at src/filters/body.rs:61

/// ```
/// use warp::Filter;
///
/// // Limit the upload to 4kb...
/// let upload = warp::body::content_length_limit(4096)
///     .and(warp::body::aggregate());
/// ```
pub fn content_length_limit(limit: u64) -> impl Filter<Extract = (), Error = Rejection> + Copy {
    crate::filters::header::header2()
        .map_err(crate::filter::Internal, |_| {
            tracing::debug!("content-length missing");
            reject::length_required()
        })
        .and_then(move |ContentLength(length)| {
            if length <= limit {
                future::ok(())
            } else {
                tracing::debug!("content-length: {} is over limit {}", length, limit);
                future::err(reject::payload_too_large())
            }
        })
        .untuple_one()
}

/// Create a `Filter` that extracts the request body as a `futures::Stream`.
///
/// If other filters have already extracted the body, this filter will reject
/// with a `500 Internal Server Error`.
///
/// For example usage, please take a look at [examples/stream.rs](https://github.com/seanmonstar/warp/blob/master/examples/stream.rs).
///
/// # Warning
///
/// This does not have a default size limit, it would be wise to use one to
/// prevent a overly large request from using too much memory.
pub fn stream(
) -> impl Filter<Extract = (impl Stream<Item = Result<impl Buf, crate::Error>>,), Error = Rejection> + Copy

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