Change the HTTP protocol version

To communicate with a service that communicates only on a given version of HTTP, set the record Version member with the desired value. If you leave the variable unset, the client will communicate in HTTP 1.1.

LET Calculator_CalculatorPortTypeEndpoint.Binding.Version = "1.0"

If you do not want the request to be split into chunks, set the HTTP protocol version to 1.0.