Gets a protected string to use as the value of the ArmoredCookiesQueryParam when making the requests in a multi-request upload.
the protected string representing the cookies, or null to indicate that default implementation should be used.
The default implementation will create an Hashtable containing the cookie names/values that ASP.NET uses for session ID and forms auth, and will pass it to Protect.
IMultiRequestUploadModule Interface | Brettle.Web.NeatUpload Namespace