scheme
Rejects a request if its Uri scheme does not match a given one.
Signature
def scheme(schm: String): Directive0
Description
The scheme directive can be used to match requests by their Uri scheme, only passing through requests that match the specified scheme and rejecting all others.
A typical use case for the scheme directive would be to reject requests coming in over http instead of https, or to redirect such requests to the matching https URI with a MovedPermanently.
For simply extracting the scheme name, see the schemeName directive.
Example
val route =
scheme("http") {
extract(_.request.uri) { uri ⇒
redirect(uri.copy(scheme = "https"), MovedPermanently)
}
} ~
scheme("https") {
complete(s"Safe and secure!")
}
Get("http://www.example.com/hello") ~> route ~> check {
status === MovedPermanently
header[Location] === Some(Location(Uri("https://www.example.com/hello")))
}
Get("https://www.example.com/hello") ~> route ~> check {
responseAs[String] === "Safe and secure!"
}