CardConnect Void

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

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

var success = false;

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

var http = new CkHttp();

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"
// }

var json = new CkJsonObject();
json.UpdateString("retref","112989260941");
json.UpdateString("merchid","MERCHANT_ID");

var url = "https://<site>.cardconnect.com:<port>/cardconnect/rest/void";

var resp = new CkHttpResponse();
success = http.HttpStr("PUT",url,json.Emit(),"utf-8","application/json",resp);
if (success == false) {
    console.log(http.LastErrorText);
    return;
}

// 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.
console.log("response status code = " + resp.StatusCode);

var jsonResp = new CkJsonObject();
jsonResp.Load(resp.BodyStr);
jsonResp.EmitCompact = false;

console.log("response JSON:");
console.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

var authcode = jsonResp.StringOf("authcode");
var respproc = jsonResp.StringOf("respproc");
var amount = jsonResp.StringOf("amount");
var resptext = jsonResp.StringOf("resptext");
var currency = jsonResp.StringOf("currency");
var retref = jsonResp.StringOf("retref");
var respstat = jsonResp.StringOf("respstat");
var respcode = jsonResp.StringOf("respcode");
var merchid = jsonResp.StringOf("merchid");