Add a RBAC TCP filter #3993
Description
Title: Add a RBAC TCP filter
Description:
Add a RBAC (Role-Based-Access-Control) TCP filter. This is needed to support authorization for non-HTTP protocol.
Relevant Links:
The RBAC HTTP filter is added in #3455
some open questions:
We could either add a new config proto for the TCP filter that includes fields only available in TCP or just reuse the existing config proto introduced for HTTP filter, and only a subset of the fields are supported in this case.
I prefer the second option but not sure if there is any preference in Envoy when a filter is implemented for both HTTP and TCP.