optionalHeaderValuePF

Description

Calls the specified partial function with the first request header the function is isDefinedAt and extracts the result of calling the function.

The optionalHeaderValuePF directive is similar to the headerValuePF directive but always extracts an Optional value instead of rejecting the request if no matching header could be found.

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.