Unable to remove `Server` header

Describe the bug

I cannot remove the Server header from the responses.

To Reproduce Steps to reproduce the behavior:

1. Create the host, service and mapping from the getting started examples
2. Modify the Mapping

apiVersion: getambassador.io/v2
kind: Mapping
metadata:
  name: quote-backend
  namespace: volker
spec:
  remove_response_headers:
  - x-envoy-upstream-service-time
  - server
  add_response_headers:
    server: MyServerHeaderValue
  prefix: /backend/
  service: quote

1. curl the response with curl -I https://your-server.org/backend/
2. See Server header is still there

HTTP/1.1 200 OK
content-type: application/json
date: Fri, 06 Mar 2020 12:10:01 GMT
content-length: 163
server: envoy

Expected behavior Server header value should be MyServerHeaderValue

Versions (please complete the following information):

• Ambassador: latest
• Kubernetes environment: bare metal
• Version latest

Additional context

This is an ongoing issue: https://github.com/datawire/ambassador/issues/307#issuecomment-412501905

[EDIT] I tried all combinations: Removing the server header. Adding a server header (overwriting). Removing the header and adding a new one. All show the same behaviour.

[balixiao]

@riker09 It looks like Envoy doesn’t support removing server header from response. But you can use ambassador Module to change the server value.

apiVersion: getambassador.io/v2
kind: Module
metadata:
  name: ambassador
spec:
  config:
    server_name: MyServerHeaderValue

[aromero15]

Hi, is there any work in progress to add support for this requirement? Removing server name from header response