Chilkat Online Tools

VB.NET / Salesforce Platform APIs / JWT Bearer Token Flow

Back to Collection Items

' 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

Dim req As New Chilkat.HttpRequest
req.AddParam("grant_type","urn:ietf:params:oauth:grant-type:jwt-bearer")
req.AddParam("assertion","")


Dim resp As Chilkat.HttpResponse = http.PostUrlEncoded("https://login.salesforce.com{{site}}/services/oauth2/token",req)
If (http.LastMethodSuccess = False) Then
    Debug.WriteLine(http.LastErrorText)
    Exit Sub
End If


Dim sbResponseBody As New Chilkat.StringBuilder
resp.GetBodySb(sbResponseBody)

Dim jResp As New Chilkat.JsonObject
jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

Debug.WriteLine("Response Body:")
Debug.WriteLine(jResp.Emit())

Dim respStatusCode As Integer = resp.StatusCode
Debug.WriteLine("Response Status Code = " & respStatusCode)
If (respStatusCode >= 400) Then
    Debug.WriteLine("Response Header:")
    Debug.WriteLine(resp.Header)
    Debug.WriteLine("Failed.")

    Exit Sub
End If



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

' {
'   "access_token": "<access_token>",
'   "scope": "web openid api full",
'   "instance_url": "https://<my_domain>",
'   "id": "https://login.salesforce.com/id/00D.../005...",
'   "token_type": "Bearer"
' }

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




Dim access_token As String = jResp.StringOf("access_token")
Dim scope As String = jResp.StringOf("scope")
Dim instance_url As String = jResp.StringOf("instance_url")
Dim id As String = jResp.StringOf("id")
Dim token_type As String = jResp.StringOf("token_type")

Curl Command

curl -X POST
	-H "Content-Type: application/x-www-form-urlencoded"
	--data-urlencode 'grant_type=urn:ietf:params:oauth:grant-type:jwt-bearer'
	--data-urlencode 'assertion='
https://login.salesforce.com{{site}}/services/oauth2/token

Postman Collection Item JSON

{
  "name": "JWT Bearer Token Flow",
  "event": [
    {
      "listen": "test",
      "script": {
        "exec": [
          "const jsonData = pm.response.json();",
          "const id = jsonData.id.split('/');",
          "",
          "const context = pm.environment.name ? pm.environment : pm.collectionVariables;",
          "context.set(\"_accessToken\", jsonData.access_token);",
          "context.set(\"_endpoint\", jsonData.instance_url);",
          "context.set(\"_userId\", id.pop());",
          "context.set(\"_orgId\", id.pop());"
        ],
        "type": "text/javascript"
      }
    }
  ],
  "request": {
    "auth": {
      "type": "noauth"
    },
    "method": "POST",
    "header": [
      {
        "key": "Content-Type",
        "value": "application/x-www-form-urlencoded"
      }
    ],
    "body": {
      "mode": "urlencoded",
      "urlencoded": [
        {
          "key": "grant_type",
          "value": "urn:ietf:params:oauth:grant-type:jwt-bearer",
          "type": "text"
        },
        {
          "key": "assertion",
          "value": "",
          "type": "text"
        }
      ]
    },
    "url": {
      "raw": "{{url}}{{site}}/services/oauth2/token",
      "host": [
        "{{url}}{{site}}"
      ],
      "path": [
        "services",
        "oauth2",
        "token"
      ]
    },
    "description": "JWT Auth"
  },
  "response": [
    {
      "name": "Successful JWT Bearer Token Flow",
      "originalRequest": {
        "method": "POST",
        "header": [
          {
            "key": "Content-Type",
            "value": "application/x-www-form-urlencoded"
          }
        ],
        "body": {
          "mode": "urlencoded",
          "urlencoded": [
            {
              "key": "grant_type",
              "value": "urn:ietf:params:oauth:grant-type:jwt-bearer",
              "type": "text"
            },
            {
              "key": "assertion",
              "value": "<token>",
              "type": "text"
            }
          ]
        },
        "url": {
          "raw": "{{url}}{{site}}/services/oauth2/token",
          "host": [
            "{{url}}{{site}}"
          ],
          "path": [
            "services",
            "oauth2",
            "token"
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "Date",
          "value": "Thu, 05 Oct 2023 12:17:02 GMT"
        },
        {
          "key": "Strict-Transport-Security",
          "value": "max-age=63072000; includeSubDomains"
        },
        {
          "key": "X-Content-Type-Options",
          "value": "nosniff"
        },
        {
          "key": "X-XSS-Protection",
          "value": "1; mode=block"
        },
        {
          "key": "X-Robots-Tag",
          "value": "none"
        },
        {
          "key": "Cache-Control",
          "value": "no-cache,must-revalidate,max-age=0,no-store,private"
        },
        {
          "key": "Expires",
          "value": "Thu, 01 Jan 1970 00:00:00 GMT"
        },
        {
          "key": "Content-Type",
          "value": "application/json;charset=UTF-8"
        },
        {
          "key": "Vary",
          "value": "Accept-Encoding"
        },
        {
          "key": "Content-Encoding",
          "value": "gzip"
        },
        {
          "key": "Transfer-Encoding",
          "value": "chunked"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"access_token\": \"<access_token>\",\n    \"scope\": \"web openid api full\",\n    \"instance_url\": \"https://<my_domain>\",\n    \"id\": \"https://login.salesforce.com/id/00D.../005...\",\n    \"token_type\": \"Bearer\"\n}"
    }
  ]
}