Xojo Plugin Requires Chilkat v11.0.0+

Get eBay Application Token

See more eBay Examples

This example shows how to request an eBay Application token. 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.

//  See the Ebay documentation about Access token types
//  Also see the Ebay documentation about client credentials grant flow

Dim http As New Chilkat.Http

//  If using the sandbox, the target endpoint will be:
//  POST https://api.sandbox.ebay.com/identity/v1/oauth2/token

//  If using the production (live) system, the target endpoint will be:
//  POST https://api.ebay.com/identity/v1/oauth2/token

//  The eBay client_id and client_secret needs to be sent
//  in a Basic Authorization  request header, which has this format:
//  Authorization: Basic <B64_encoded_oauth_credentials>

//  Chilkat takes care of it.  You only need to set the Login = client_id,
//  and password = client_secret, and indicate you want "Basic" HTTP Authorization.
http.Login = "EBAY_CLIENT_ID"
http.Password = "EBAY_CLIENT_SECRET"
http.BasicAuth = True

//  Let's do the following POST:

//    HTTP method:   POST
//    URL (Sandbox): https://api.sandbox.ebay.com/identity/v1/oauth2/token
//  
//    HTTP headers:
//      Content-Type = application/x-www-form-urlencoded
//      Authorization = Basic <B64-encoded-oauth-credentials>
//  
//    Request body (wrapped for readability):
//      grant_type=client_credentials&
//      redirect_uri=<RuName-value>&
//      scope=<SPACE separated list of scopes>
//  

//  Create an HttpRequest object to hold the request params.
Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.AddParam "grant_type","client_credentials"

//  The scope query param indicates the access to be provided by the token.
//  Multiple scopes can be specified by separating each with a SPACE char.
//  See the Ebay OAuth scopes documentation

req.AddParam "scope","https://api.ebay.com/oauth/api_scope"

Dim endPoint As String
endPoint = "https://api.sandbox.ebay.com/identity/v1/oauth2/token"
req.ContentType = "application/x-www-form-urlencoded"

Dim resp As New Chilkat.HttpResponse
success = http.HttpReq(endPoint,req,resp)
If (success = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

//  The response is JSON..
Dim json As New Chilkat.JsonObject
success = json.Load(resp.BodyStr)
json.EmitCompact = False

//  If the response status code is not 200, then it failed.
System.DebugLog("Response status code = " + Str(resp.StatusCode))
If (resp.StatusCode <> 200) Then
    System.DebugLog(json.Emit())
    System.DebugLog("Failed.")
    Return
End If

//  We successfully retrieved an eBay access token.
//  The actual access token string can be parsed from the JSON like this:
Dim accessToken As String
accessToken = json.StringOf("access_token")

//  This application token is only valid for 7200 seconds (2 hours).  We'll want to refresh
//  it before it expires.  (There is an online example for that..)
//  For now, let's save the JSON to a file for our application to use.

//  But before doing that, let's add to the JSON an expiration timestamp
//  so we know when to refresh the token.
Dim dtExpire As New Chilkat.CkDateTime
success = dtExpire.SetFromCurrentSystemTime()
success = dtExpire.AddSeconds(json.IntOf("expires_in"))
success = json.AppendString("expire_time",dtExpire.GetAsTimestamp(False))

//  Persist the JSON to a file.
Dim fac As New Chilkat.FileAccess
success = fac.WriteEntireTextFile("qa_data/tokens/ebay.json",json.Emit(),"utf-8",False)
If (success <> True) Then
    System.DebugLog(fac.LastErrorText)
    System.DebugLog("Failed to save eBay Application token to file.")
    Return
End If

System.DebugLog(json.Emit())
System.DebugLog("Success.")

//  The output of this example is:

//  	{ 
//  	  "access_token": "v^1.1#i^1#p^1#I^3#r^0# ... Ajp1BQhJDgAA",
//  	  "token_type": "Application Access Token",
//  	  "expires_in": 7200,
//  	  "refresh_token": "N/A",
//  	  "expire_time": "2017-04-16T14:44:20Z"
//  	}
//  
//  	Success.
//