Request to add underlyingError to `TUSClientError.couldNotGetFileStatus`

[andrewking1235]

Hi! I've been debugging errors in resuming uploads, and noticed that in TUSKit's StatusTask.swift line 101 is hiding an underlying error:

                            } catch let error as TUSClientError {
                                completed(.failure(error))
                            } catch {
                                completed(.failure(TUSClientError.couldNotGetFileStatus))
                            }

In my current case the error in that last catch is meaningful, and would be helpful to pass to our logging servers:

(lldb) po error
▿ TUSAPIError
  - underlyingError : Error Domain=NSURLErrorDomain Code=-1005 "The network connection was lost." UserInfo={_kCFStreamErrorCodeKey=-4, NSUnderlyingError=0x3033e50e0 {Error Domain=kCFErrorDomainCFNetwork Code=-1005 "(null)" UserInfo={_kCFStreamErrorCodeKey=-4, _kCFStreamErrorDomainKey=4}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <4809DF01-5D04-4544-BF81-841BA2E4DBE0>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
    "LocalDataTask <4809DF01-5D04-4544-BF81-841BA2E4DBE0>.<1>"
), NSLocalizedDescription=The network connection was lost., NSErrorFailingURLStringKey=<OUR DOMAIN>/mobile/media/tusupload/c5ce516de4794a3f99e57746aef1f578, NSErrorFailingURLKey=<OUR DOMAIN>/mobile/media/tusupload/c5ce516de4794a3f99e57746aef1f578, _kCFStreamErrorDomainKey=4}

Would it be possible to include either the TUSAPIError, or if you are trying not to expose that, it's own underlying network error?

Thanks!
Andrew

[donnywals]

I will have a look at the best way to do this. I want to try and avoid a breaking change if I can (adding the underlying error would be a breaking change even though the API change is easy to adopt...). Definitely a reasonable request though so I'll find a way