This can selected cookies from the http request before it reaches the application. You can use the configuration example in envoy.yaml to remove cookies from the request.

• Install func-e - helps running envoy
• Example

  cargo build --target wasm32-unknown-unknown --release;
  [[ -e target/wasm32-unknown-unknown/release/cookie_delete_filter.wasm ]] && func-e run --config-path envoy.yaml
  
  # test, by sending cookies, and checking the response headers from httpbin.org/headers
  while true; do
      curl -q -s \
        http://127.0.0.1:8080/headers \
        --header 'cookie: a=1; b=2; remove-this-cookie=no; remove-this-cookie-too=no; c=3' | jq '.headers.Cookie'
  done