There is a hardcoded retryDeadline of 32s for each chunk of a resumable upload which seems rather short for reliable uploads: https://github.com/googleapis/google-api-go-client/blob/master/internal/gensupport/resumable.go#L27

When doing many resumable uploads to GCS we often encounter 503 responses for some objects lasting for longer than 32s, which makes the whole upload for that object fail.

It would be great if we could just use the deadline of the context for timing out retries or make the retryDeadline an option.