Contract between Envoy Extproc and EPP is incorrect.

[ahmed-laiq]

What happened:
Envoy expects that the first field in the metadata should match the receiving namespace of the envoy extproc configuration. The data should be wrapped within the struct of this namespace key.

What you expected to happen:
The struct containing the key value for "IP:PORT" should be contained in the namespace key.

[kfswain]

/assign kfswain

[ahg-g]

we could have this as a flag and default it to something that aligns with the key name that we selected previously, one suggestion is gateway-destination-endpoint.dynamic_forwarding.selected_endpoints

[ahg-g]

/assign