async fn save_file(mut payload: Multipart) -> Result<HttpResponse, actix_web::Error> {
……
……
 let p= do_grpc(file_data.clone()).boxed_local().await;
 println!("*********************{:?}",p);
}


async fn do_grpc(  file_data:Vec<u8>) -> Result<tonic::Response<mask_wear::MaskResponse>, Box<dyn std::error::Error+ 'static>>{
    let mut client = MaskWearClient::connect("http://127.0.0.1:32713").await?;
    let request = tonic::Request::new(MaskRequest {
        image_bytes: file_data.into(),
        use_image_from_url: false,
        image_url: "url".to_string().into(),
    });
    let response = client.maskwear(request).await?;
    println!("RESPONSE={:?}", response);
    Ok(response)
}