async fn handshake(
        &self,
        request: tonic::Request<proto::Empty>,
    ) -> Result<tonic::Response<proto::PlatformReply>, tonic::Status> {
        Ok(proto::PlatformReply {
            endianness: if cfg!(target_endian = "big") { 0 } else { 1 },
            pointer_width: std::mem::size_of::<usize>() as i32,
            arch: match std::env::consts::ARCH {
                "x86_64" => 0,
                "aarch64" => 1,
                _ => unimplemented!(),
            },
        }
        .into())
    }