B4X

Refresh eBay Application Access Token

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This example shows how to get a new eBay REST API access token when the original is close to expiration. B4X

Dim success As Boolean = False

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

'  The previously fetched eBay access token looks like this:

'  {
'    "access_token": "v^1.1#i^1# ... HwSAAA=",
'    "expires_in": 7200,
'    "refresh_token": "v^1.1#i^1# ... FXjEyODQ=",
'    "refresh_token_expires_in": 47304000,
'    "token_type": "User Access Token"
'  }

Dim json As ChilkatJsonObject
json.Initialize
success = json.LoadFile("qa_data/tokens/ebay-access-token.json")
If success = False Then
    Log("Failed to load the existing ebay access token JSON.")
    Return
End If


Dim oauth2 As ChilkatOAuth2
oauth2.Initialize("oauth2")

oauth2.TokenEndpoint = "https://api.sandbox.ebay.com/identity/v1/oauth2/token"

'  Replace these with actual values.
oauth2.ClientId = "EBAY_CLIENT_ID"
oauth2.ClientSecret = "EBAY_CLIENT_SECRET"

'  Get the "refresh_token"
oauth2.RefreshToken = json.StringOf("refresh_token")

'  Send the HTTP POST to refresh the access token..
success = oauth2.RefreshAccessToken
If success = False Then
    Log(oauth2.LastErrorText)
    Return
End If


'  Load the access token response into the JSON object 
json.Load(oauth2.AccessTokenResponse)


'  Save the new JSON access token response to a file.
'  The access + refresh tokens contained in this JSON will be needed for the next refresh.
json.EmitCompact = False
json.WriteFile("qa_data/tokens/ebay-access-token.json")

Log("OAuth2 authorization granted!")
Log("New Access Token = " & oauth2.AccessToken)