[Lukasa]

We're working on a draft that will allow clients to signal what resources are already in their cache. This should allow us to reduce the bandwidth risk of unnecessary pushes.

[theandrewbailey]

What about a header to tell the server to not push anything?

[ropiku]

Clients can always disable push using SETTINGS_ENABLE_PUSH. They can also reject each pushed resource (stream) https://daveyshafik.com/archives/69603-http2-server-push-you...