diff --git a/tonic/src/transport/server/mod.rs b/tonic/src/transport/server/mod.rs index ba107e4..e83ff07 100644 --- a/tonic/src/transport/server/mod.rs +++ b/tonic/src/transport/server/mod.rs @@ -633,6 +633,7 @@ impl Service> for Unimplemented { http::Response::builder() .status(200) .header("grpc-status", "12") + .header("content-type", "application/grpc") .body(BoxBody::empty()) .unwrap(), )