(Xojo Plugin) CardConnect Void

Demonstrates how to send a CardConnect void request.

The void service cancels a transaction that is in either "Authorized" or "Queued for Capture" status.. ...

See https://developer.cardconnect.com/cardconnect-api#void

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Dim http As New Chilkat.Http
Dim success As Boolean

http.BasicAuth = True
http.Login = "API_USERNAME"
http.Password = "API_PASSWORD"

// Build and send the following JSON:

// The "retref" is the value returned in the JSON response for the Authorization request.

// {
//     "retref":"112989260941",
//     "merchid":"MERCHANT_ID"
// }

Dim json As New Chilkat.JsonObject
success = json.UpdateString("retref","112989260941")
success = json.UpdateString("merchid","MERCHANT_ID")

Dim url As String
url = "https://<site>.cardconnect.com:<port>/cardconnect/rest/void"
Dim responseStr As String
responseStr = http.PutText(url,json.Emit(),"utf-8","application/json",False,False)
If (http.LastMethodSuccess = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

// A response status of 200 indicates potential success.  The JSON response body
// must be examined to determine if it was truly successful or an error.
System.DebugLog("response status code = " + Str(http.LastStatus))

Dim jsonResp As New Chilkat.JsonObject
success = jsonResp.Load(responseStr)
jsonResp.EmitCompact = False

System.DebugLog("response JSON:")
System.DebugLog(jsonResp.Emit())

// A successful response looks like this:

// {
//   "authcode": "REVERS",
//   "respproc": "FNOR",
//   "amount": "0.00",
//   "resptext": "Approval",
//   "currency": "USD",
//   "retref": "112989260941",
//   "respstat": "A",
//   "respcode": "00",
//   "merchid": "496160873888"
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

Dim authcode As String
authcode = jsonResp.StringOf("authcode")
Dim respproc As String
respproc = jsonResp.StringOf("respproc")
Dim amount As String
amount = jsonResp.StringOf("amount")
Dim resptext As String
resptext = jsonResp.StringOf("resptext")
Dim currency As String
currency = jsonResp.StringOf("currency")
Dim retref As String
retref = jsonResp.StringOf("retref")
Dim respstat As String
respstat = jsonResp.StringOf("respstat")
Dim respcode As String
respcode = jsonResp.StringOf("respcode")
Dim merchid As String
merchid = jsonResp.StringOf("merchid")