Function choices::warp::filters::reply::header [−][src]
pub fn header<K, V>(name: K, value: V) -> WithHeader where
HeaderName: TryFrom<K>,
<HeaderName as TryFrom<K>>::Error: Into<Error>,
HeaderValue: TryFrom<V>,
<HeaderValue as TryFrom<V>>::Error: Into<Error>,
Wrap a Filter
that adds a header to the reply.
Note
This only adds a header if the underlying filter is successful, and
returns a Reply
. If the underlying filter was rejected, the
header is not added.
Example
use warp::Filter; // Always set `foo: bar` header. let route = warp::any() .map(warp::reply) .with(warp::reply::with::header("foo", "bar"));