how to safety close file stream

[MisterChangRay]

i wanna write a file download server.

as Response code as following

        return Response(
          200,
          body: File(file.path!).openRead(),
          headers: headers,
        );

as u see, i send file as stream for return;

but, i has a proplem, on browser download large file , if user cancel download process, the file has never be closed!

so, how to get the socket error for close the file stream?

[MisterChangRay]

i saw the code in file shelf_io.dart at line 254

  return httpResponse
      .addStream(response.read())
      .then((_) => httpResponse.close());

this then call be stream read end, if exception has occur, the call not be execute.

and i search on google, find the HttpResonse has a done method, this method has called by any case;

so , can expose the httpResonse.done method?

[kevmoo]

@MisterChangRay – ooo...this might be a bug, honestly!

[MisterChangRay]

@MisterChangRay – ooo...this might be a bug, honestly!

can fixed the bug in next version?

[MisterChangRay]

@kevmoo

[wengxianxun]

i need too, tk

[pedia]

I think #399 is same issue.

[15265265262]

What do you think about monitoring the amount of data that the user has already downloaded and setting timeout to close if the data block has not been downloaded yet?

[2shrestha22]

If client aborts the connection it will stuck on the handler, no exception thrown.