API ASP.NET Core The server returned an invalid or unrecognized response #34
Description
When connecting to a web service using HttpClient factory (Core 2.1) from App Service via Hybrid Connection to an on-prem web service we get:
ASP.NET Core - Post Request to API - InnerException {System.Net.Http.WinHttpException (0x80072F78): The server returned an invalid or unrecognized response
On-prem. webservice is running on port: 8844
Hybrid Connection Manager show as connected as appears to be configured correctly.
When running the same internally with both services on-prem. (IE not via Hybrid Connection) this works fine.
Does Hybrid Connection do something that makes HttpClient reject the response?