Azure Web App Temp file cleaning responsibility

Maybey if you extend FileStream you can override dispose and remove it when disposed is called? That is how i'm resolving it for now. If i'm wrong let me know.

 /// <summary>
/// Create a temporary file and removes its when the stream is closed.
/// </summary>
internal class TemporaryFileStream : FileStream
{
    public TemporaryFileStream() : base(Path.GetTempFileName(), FileMode.Open)
    {
    }

    protected override void Dispose(bool disposing)
    {
        base.Dispose(disposing);

        // After the stream is closed, remove the file.
        File.Delete(Name);
    }
}

Those files only get cleaned when your site is restarted.

If your site is running in Free or Shared mode, it only gets 300MB for temp files, so you could run out if you don't clean up.

If your site is in Basic or Standard mode, then there is significantly more space (around 200GB!). So you could probably get away with not cleaning up without running into the limit. Eventually, your site will get restarted (e.g. during platform upgrade), so things will get cleaned up.

See this page for some additional detail on this topic.