Add delay between connection attempts

src/download.rs

@@ -270,6 +270,9 @@ pub async fn download_feedback_multi(url: &str, into_file: &str, rep: DlReporter
 
             let specific_content_length = from_to.1 - from_to.0 + 1;
 
+            // Delay each chunk-download to reduce the number of simultanious connection attempts
+            tokio::time::sleep(tokio::time::Duration::from_millis(50 *index as u64)).await;
+
             download_feedback_chunks(&url, &into_file, rep, Some(from_to), true, Some(specific_content_length)).await.map_err(|e| e.to_string())
 
         }))