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In the WFE, store the User-Agent in a
context.Context
object. In our gRPC interceptors, pass that field in a Metadata header, and re-add it toContext
on the server side.Add a test in the gRPC interceptors that User-Agent is properly propagated.
Note: this adds a new
setup()
function for the gRPC tests that is currently only used by the new test. I'll upload another PR shortly that expands the use of that function to more tests.Note: this change is based on #7888. DO NOT MERGE until that change merges.