HttpWorkerRequest.SendCalculatedContentLength Method (Int32)
Adds a Content-Length HTTP header to the response for message bodies that are less than or equal to 2 GB.
Assembly: System.Web (in System.Web.dll)
When the content length is not explicitly set, this method enables the HttpWorkerRequest instance to add a Content-Length HTTP header to the response.
Use this overload to set the Content-Length header when the length of the response message body is less than or equal to 2 GB.
Available since 1.1