Envoy Stripping Custom Headers

[Sourabh_Wadhwa]

@Jonathan_H

The documentation for Istio/Envoy states that it’ll sanitize headers with the x- prefix, but doesn’t say anything about removing custom headers. Is this expected or is there an easy way to keep Envoy as a layer 7 proxy while being able to maintain our headers?

Can you lease send me the URL where this is documented ? I couldnt find it anywhere