B4X Requires Chilkat v11.0.0+

CardConnect Void

See more CardConnect Examples

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

B4X

Dim success As Boolean = False

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

Dim http As ChilkatHttp
http.Initialize("http")

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 ChilkatJsonObject
json.Initialize
json.UpdateString("retref", "112989260941")
json.UpdateString("merchid", "MERCHANT_ID")

Dim url As String = "https://<site>.cardconnect.com:<port>/cardconnect/rest/void"

Dim resp As ChilkatHttpResponse
resp.Initialize
success = http.HttpStr("PUT", url, json.Emit, "utf-8", "application/json", resp)
If success = False Then
    Log(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.
Log("response status code = " & resp.StatusCode)

Dim jsonResp As ChilkatJsonObject
jsonResp.Initialize
jsonResp.Load(resp.BodyStr)
jsonResp.EmitCompact = False

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