Knet Dotnet Core Integration

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

Why use RAW integration instead of iPayPipe (DLL)?

• 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.

Disclaimer

• 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.

Development Requirements

• 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

Building and Publishing

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

Before You Start

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

Pages of Interest

• 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.