Function warp::filters::reply::default_header [−][src]
pub fn default_header<K, V>(name: K, value: V) -> WithDefaultHeader where
HeaderName: HttpTryFrom<K>,
HeaderValue: HttpTryFrom<V>,
Wrap a Filter
that adds a header to the reply, if they
aren't already set.
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; // Set `server: warp` if not already set. let route = warp::any() .map(warp::reply) .with(warp::reply::with::default_header("server", "warp"));