Struct warp::reject::Rejection

pub struct Rejection { /* private fields */ }

Rejection of a request by a Filter.

See the reject documentation for more.

Implementations

impl Rejection

pub fn find_cause<T: StdError + 'static>(&self) -> Option<&T>

Searches this Rejection for a specific cause.

A Rejection will accumulate causes over a Filter chain. This method can search through them and return the first cause of this type.

Example

use std::io;

let err = io::Error::new(
    io::ErrorKind::Other,
    "could be any std::error::Error"
);
let reject = warp::reject::custom(err);

if let Some(cause) = reject.find_cause::<io::Error>() {
   println!("found the io::Error: {}", cause);
}

pub fn is_not_found(&self) -> bool

Returns true if this Rejection was made via warp::reject::not_found.

Example

let rejection = warp::reject::not_found();

assert!(rejection.is_not_found());

pub fn cause(&self) -> Option<&Cause>

Returns an optional error cause for this rejection.

If this Rejection is actuall a combination of rejections, then the returned cause is determined by an internal ranking system. If you’d rather handle different causes with different priorities, use find_cause.

Note

The return type will change from &Box<Error> to &Error in v0.2. This method isn’t marked deprecated, however, since most people aren’t actually using the Box part, and so a deprecation warning would just annoy people who didn’t need to make any changes.

Trait Implementations

impl Debug for Rejection

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.