Xojo Plugin

citi Developer OAuth2 Client Credentials Grant

See more OAuth2 Examples

Get access token for your application credentials. You can use this for citi APIs which do not require customer credential verification and consent (e.g. Onboarding). Xojo Plugin

Dim success As Boolean
success = False

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

Dim http As New Chilkat.Http

// Implements the following CURL command:

// curl --request POST \
//   --url https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb \
//   --header 'accept: application/json' \
//   --user client-id:client-secret \
//   --header 'content-type: application/x-www-form-urlencoded' \
//   --data 'grant_type=client_credentials&scope=%2Fapi'

http.Login = "client-id"
http.Password = "client-secret"

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = "/gcb/api/clientCredentials/oauth2/token/us/gcb"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","client_credentials"
req.AddParam "scope","/api"
req.AddHeader "accept","application/json"

Dim resp As New Chilkat.HttpResponse
success = http.HttpReq("https://sandbox.apihub.citi.com/gcb/api/clientCredentials/oauth2/token/us/gcb",req,resp)
If (success = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

Dim sbResponseBody As New Chilkat.StringBuilder
success = resp.GetBodySb(sbResponseBody)
Dim jResp As New Chilkat.JsonObject
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

System.DebugLog("Response Body:")
System.DebugLog(jResp.Emit())

Dim respStatusCode As Int32
respStatusCode = resp.StatusCode
System.DebugLog("Response Status Code = " + Str(respStatusCode))
If (respStatusCode >= 400) Then
    System.DebugLog("Response Header:")
    System.DebugLog(resp.Header)
    System.DebugLog("Failed.")
    Return
End If

success = jResp.WriteFile("qa_data/tokens/citi_client_credentials.json")
If (success = False) Then
    System.DebugLog("Failed to save JSON access token file.")
    Return
End If

//  Sample JSON response:
//  (Sample code for parsing the JSON response is shown below)

//  {
//    "token_type": "bearer",
//    "access_token": "AAIkMjdh ... 3fsWb7zJ0s",
//    "expires_in": 1800,
//    "consented_on": 1584817860,
//    "scope": "/api"
//  }

//  Sample code for parsing the JSON response...
//  Use the following online tool to generate parsing code from sample JSON:
//  Generate Parsing Code from JSON

Dim token_type As String
token_type = jResp.StringOf("token_type")
Dim access_token As String
access_token = jResp.StringOf("access_token")
Dim expires_in As Int32
expires_in = jResp.IntOf("expires_in")
Dim consented_on As Int32
consented_on = jResp.IntOf("consented_on")
Dim scope As String
scope = jResp.StringOf("scope")