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Cookie Delete Filter - envoy/istio WASM filter

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.

Build

  • 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