Fix silent corruption error

- When the server terminates a connection before the download is
  complete, the error wasn't noticed
- Fixed error where the tokio receiver was dropped before all
  transmitters. This caused a panic when transmitters tried to send
  status udates.
- Fixed error message still containing file path

src/download.rs

@@ -207,6 +207,10 @@ pub async fn download_feedback_chunks(url: &str, into_file: &str, rep: DlReporte
     if buff.len() > 0 {
         ofile.write_all(&buff).await?;
     }
+
+    if curr_progress != content_length {
+        return Err(DlError::HttpNoData.into());
+    }
     
     // Ensure that IO is completed
     //ofile.flush().await?;
@@ -291,7 +295,7 @@ pub async fn download_feedback_multi(url: &str, into_file: &str, rep: DlReporter
 
     let mut t_last = t_start.clone();
 
-    joiners.push(tokio::task::spawn(async move {
+    let manager_handle = tokio::task::spawn(async move {
 
         let rep = rep_task;
         //let mut dl_speeds = vec![0.0_f32; conn_count as usize];
@@ -357,8 +361,7 @@ pub async fn download_feedback_multi(url: &str, into_file: &str, rep: DlReporter
             }
         }
 
-        Ok(())
-    }));
+    });
     
 
     let mut joiners: FuturesUnordered<_> = joiners.into_iter().collect();
@@ -374,12 +377,16 @@ pub async fn download_feedback_multi(url: &str, into_file: &str, rep: DlReporter
                 handle.abort();
             }
 
+            manager_handle.abort();
+
             tokio::fs::remove_file(&into_file).await?;
 
             return Err(e.into());
         }
     }
 
+    manager_handle.await?;
+
     // Remove the additional byte at the file end
     let ofile = tokio::fs::OpenOptions::new()
         .create(false)

src/errors.rs

@@ -9,6 +9,7 @@ pub type ResBE<T> = Result<T, Box<dyn Error>>;
 pub enum DlError {
     BadHttpStatus,
     ContentLengthUnknown,
+    HttpNoData,
     Other(String)
 }
 
@@ -20,6 +21,7 @@ impl Display for DlError {
         match self {
             DlError::BadHttpStatus => write!(f, "Bad http response status"),
             DlError::ContentLengthUnknown => write!(f, "Content-Length is unknown"),
+            DlError::HttpNoData => write!(f, "Http server sent no more data"),
             DlError::Other(s) => write!(f, "Unknown download error: '{}'", s)
         }
     }

src/main.rs

@@ -266,7 +266,7 @@ async fn download_multiple(urls: Vec<String>, outdir: &str, file_count: i32, con
                 if conn_count == 1 {
                     if let Err(_e) = download::download_feedback(&url, &into_file, rep.clone(), Some(filesize)).await {
                         rep.send(DlStatus::DoneErr {
-                            filename: into_file.to_string()
+                            filename: file_name.to_string()
                         });
                     }
                 } else {
@@ -280,7 +280,7 @@ async fn download_multiple(urls: Vec<String>, outdir: &str, file_count: i32, con
 
                     if let Err(_e) = download::download_feedback_multi(&url, &into_file, rep.clone(), conn_count, Some(filesize)).await {
                         rep.send(DlStatus::DoneErr {
-                            filename: into_file.to_string()
+                            filename: file_name.to_string()
                         });
                     }
                 };