respondWithHeader

Description

Adds a given HTTP header to all responses coming back from its inner route.

This directive transforms HttpResponse and ChunkedResponseStart messages coming back from its inner route by adding the given HttpHeader instance to the headers list.

See also respondWithHeaders if you'd like to add more than one header.

Example

TODO: Example snippets for JavaDSL are subject to community contributions! Help us complete the docs, read more about it here: write example snippets for Akka HTTP Java DSL #20466.