Payment Gateway Client

There are several "smaller" merchant payment gateways that all use the same API system. This client is meant to work with all of them. Below is a list of known providers that use this system.

Original documentation: https://integratepayments.transactiongateway.com/merchants/resources/integration/integration_portal.php

https://www.integratepayments.com/payment-gateway/integrate-payments-query-api

http://status.transactiongateway.com/

Known Providers

• 0 Merchant
• Advanced Merchant Group
• Aliant Payments
• Align Pay
• Bottom Line Payments
• CanyonPay
• Charge1
• CMS
• CryptoBucks (not for their crypto currency API)
• CyoGate
• Durango Merchant Services
• Easy Pay Direct
• Electronic Processing of North America (EPNA)
• Empyrean Merchant Services
• Inspire Commerce (.pay / dot pay)
• Merchant Guy
• Merchant One
• MSG Payment Systems
• National Processing
• Network Merchants (NMI)
• Payabli (Centavo)
• PayKings
• PayDough.Me
• Payscape
• Pay Engines
• PlanetAuthorize
• RedFynn Technologies
• SecureGlobalPay
• Sibacpay
• SkyBank Financial
• TranzCrypt
• UMS Banking Gateway
• Valued Merchant Services
• Vericheck
• VizyPay

Note: This is not an indication of endorsement and there is no guarantee of compatibility. With the exception of NMI, these providers have not been tested. Based on current experience, it may be possible to use any of these (and new) providers using the NMI API endpoint though this use case has not been tested.

If you find another gateway that uses this system, please file an issue to get this list updated.

Usage

Credit/Debit Cards

            var securityKey = "6457Thfj624V5r7WUwc5v6a68Zsd6YEm"; // test account
            var client = new GatewayClient(securityKey, GatewayProvider.NMI);
            Sale sale = new Sale
            {
                CardNumber = "4111111111111111",
                CardExpiration = "0323",
                CVV = "999",
                Amount = "5.00",
                FirstName = "John",
                LastName = "Smith",
                Address1 = "1234 Main St.",
                City = "Chicago",
                State = "IL",
                Zip = "60193",
                Payment = "creditcard"
            };

            var result = client.Sale(sale);

ACH/eCheck

            var securityKey = "6457Thfj624V5r7WUwc5v6a68Zsd6YEm"; // test account
            var client = new GatewayClient(securityKey, GatewayProvider.NMI);
            Sale sale = new Sale
            {
                CheckABA = "123123123",
                CheckAccount = "123123123",
                CheckName = "John Smith",
                StandardEntryClass = "WEB",
                Amount = "5.00",
                FirstName = "John",
                LastName = "Smith",
                Address1 = "1234 Main St.",
                City = "Chicago",
                State = "IL",
                Zip = "60193",
                Payment = "check",
                AccountHolderType = "business",
                AccountType = "checking"
            };

            var result = client.Sale(sale);

Response

public class GatewayResponse {
    public readonly GatewayResponseCode Response; // Approved, Declined, Error
    public readonly string ResponseText;
    public readonly ReadOnlyDictionary<string, string> Data;
}

Web hook Validation

.NET Framework

ctx = HttpContext.Current;
// generate/retrieve signing key from gateway portal
string key = "WEBHOOK SIGNING KEY";
string signature = ctx.Request.Headers["webhook-Signature"];
string reqBody = "";
try
{
    using (StreamReader sr = new StreamReader(ctx.Request.InputStream))
        reqBody = await sr.ReadToEndAsync();
}
catch { }
WriteLog($"------{DateTime.UtcNow:R}---------------");
WriteLog(signature);
WriteLog(reqBody);

var status = WebhookParser.ParseWebhookData(reqBody, key, signature);
if (!status.IsValid)
{
    WriteLog($"------{DateTime.UtcNow:R}---------------");
    WriteLog("Webhook validation failed!");
    return;
}
// process status.Data

.NET Core / .NET 5+

// generate/retrieve signing key from gateway portal
string key = "WEBHOOK SIGNING KEY";
string signature = Request.Headers["webhook-Signature"];
string reqBody = "";
try
{
    using (StreamReader sr = new StreamReader(Request.Body))
        reqBody = await sr.ReadToEndAsync();
}
catch { }
WriteLog($"------{DateTime.UtcNow:R}---------------");
WriteLog(signature);
WriteLog(reqBody);

var status = WebhookParser.ParseWebhookData(reqBody, key, signature);
if (!status.IsValid)
{
    WriteLog($"------{DateTime.UtcNow:R}---------------");
    WriteLog("Webhook validation failed!");
    return;
}
// process status.Data