C# / .NET core: Get Remote IP Address with Proxy / CDN Support - HttpContext_RemoteIPAddress.cs
https://ipgeolocation.io/documentation/ip-geolocation-api-c-sharp-dotnet-sdk.html https://www.techieclues.com/blogs/how-to-get-free-geolocation-from-ip-address-using-csharp https://ip-api.com/ https://ipinfo.io/blog/ip-geolocation-c-sharp/
