func StreamServerInterceptor ¶
StreamServerInterceptor returns a new unary server interceptors that performs per-request auth.
AuthFunc is the pluggable function that performs authentication.
The passed in `Context` will contain the gRPC metadata.MD object (for header-based authentication) and the peer.Peer information that can contain transport-based credentials (e.g. `credentials.AuthInfo`).
The returned context will be propagated to handlers, allowing user changes to `Context`. However, please make sure that the `Context` returned is a child `Context` of the one passed in.
If error is returned, its `grpc.Code()` will be returned to the user as well as the verbatim message. Please make sure you use `codes.Unauthenticated` (lacking auth) and `codes.PermissionDenied` (authed, but lacking perms) appropriately.