This introduces a new filter called the "external processing filter." It is intended to allow an external service to be able to operate as if it were part of the filter chain using a gRPC stream. It is intended to support a variety of use cases in which processing of HTTP requests and responses by an external service is desired.
A document that describes the filter can be found here:
https://docs.google.com/document/d/1IZqm5IUnG9gc2VqwGaN5C2TZAD9_QbsY9Vvy5vr9Zmw/edit#heading=h.3zlthggr9vvv
Signed-off-by: Gregory Brail <gregbrail@google.com>
Mirrored from https://github.com/envoyproxy/envoy @ 98d2f3b553b87c3e935f57ba15b4faf68b45d7f0
data-plane-api(Azure Pipelines)