.NET Core RAW API Integration of Knet payment gateway.
This is an unofficial port of the official PHP example provided by Knet.

• iPayPipe requires IKVM to work in C# based code which is not ideal, especially that the IKVM project is not in active development.
• The IKVM version provided by Knet is not compatible with .NET Core.
• This approach reduces dependencies and produces a lighter application footprint.
• The published app is compatible with all platforms.

• This is NOT an official port, use it at your own risk. No warranty is provided.
• This is a proof of concept and should not be used in a production environment.
• Please review Knet official documentation first before implementing.

• OS: Mac, Windows or Linux
• Visual Studio Code / Visual Studio (for debugging)
• .NET Core 5 SDK (for development) and .NET Core Hosting bundle (for publishing) https://dotnet.microsoft.com/download/dotnet/5.0

• Run dotnet restore
• Build with dotnet build
• Run locally with dotnet run
• Publish with dotnet publish

To test properly, please follow these steps:

• Contact Knet to provide you with Sandbox API details.
• Plug in your KNET details inside the appsettings.json, you will need:
  • Knet Sandbox Tranportal Id
  • Knet Sandbox Tranportal Password
  • Knet Sandbox Payment Api Url (kpaytest)
  • Knet Sandbox Terminal Resource Key
• Test using the checkout form.
• Once everything is OK, contact Knet to provide you with the production API details. (payment flow verification might be required)
• Implement the payment flow in your real project with the necessary adjustments such as:
  • Knet production API endpoint (kpay instead of kpaytest)
  • Proper Response and Error webhooks
  • Production Tranportal details
  • Proper Track ID generation
  • Database Integration
  • Logging
  • Additional Security

• Index.cshtml: Landing page
• init-payment.cshtml and init-payment.cshtml.cs: Checkout page that kicks off the payment process
• payment-response.cshtml and payment-response.cshtml.cs: The response page/webhook that is used by Knet. Knet performs a POST request against this page once the process is finished from their side. The result can be successful (CAPTURED) or failed (anything else).
• payment-error.cshtml: The error page that is used by Knet. Knet performs a GET request against this page if there are any errors related to the payment gateway or the payment process.
• knetUtil.cs: Utility Knet class that contains the bulk of the encryption/decryption logic.
• phpExample.php: A summary of the official Knet PHP example. Use this file to compare .NET Core outputs with PHP outputs.