Chilkat Examples

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DataFlex Web API Examples

Primary Categories

ABN AMRO
AWS Secrets Manager
AWS Security Token Service
AWS Translate
Activix CRM
Adyen
Alibaba Cloud OSS
Amazon Cognito
Amazon DynamoDB
Amazon MWS
Amazon Pay
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Belgian eHealth Platform
Bitfinex v2 REST
Bluzone
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Constant Contact
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Egypt eReceipt
Etsy
Facebook
Faire
Frame.io
GeoOp
GetHarvest
Global Payments
Google People
Google Search Console
Google Translate
Hungary NAV Invoicing
IBM Text to Speech
Ibanity
IntakeQ
Jira
Lightspeed
MYOB
Magento
Mailgun
Mastercard

MedTunnel
MercadoLibre
MessageMedia
Microsoft Calendar
Microsoft Group
Microsoft Tasks and Plans
Microsoft Teams
Moody's
Okta OAuth/OIDC
OneLogin OIDC
OneNote
OpenAI ChatGPT
PRODA
PayPal
Paynow.pl
Peoplevox
Populi
QuickBooks
Rabobank
Refinitiv
Royal Mail OBA
SCiS Schools Catalogue
SII Chile
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SendGrid
Shippo
Shopify
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Shopware 6
SimpleTexting
Square
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SugarCRM
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Trello
Twilio
Twitter API v2
Twitter v1
UPS
UniPin
VoiceBase
Vonage
WaTrend
Walmart v3
Wasabi
WhatsApp
WiX
WooCommerce
WordPress
Xero
Yahoo Mail
Yapily
Yousign
ZATCA
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Zoom
_Miscellaneous_
eBay
effectconnect
hacienda.go.cr

 

 

 

(DataFlex) Refresh a Constant Contact OAuth2 Access Token

Refreshes a Constant Contact OAuth2 access token. When an access token expires, HTTPS requests will receive a 401 status response indicating failure. When that happens, your application can run this code to refresh the access token, and then retry the request using the new access token. Refreshing an access token does not need user interaction (i.e. does not need to display a browser to have the user interactive authorize access).

For more information, see https://v3.developer.constantcontact.com/api_guide/server_flow.html#step-5-refresh-the-access-token

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoJsonToken
    Boolean iSuccess
    Handle hoOauth2
    Variant vSbJson
    Handle hoSbJson
    String sTemp1

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

    // It is assumed we previously obtained an OAuth2 access token.
    // This example loads the JSON access token file 
    // saved by this example: Get Constant Contact OAuth2 Access Token

    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonToken
    If (Not(IsComObjectCreated(hoJsonToken))) Begin
        Send CreateComObject of hoJsonToken
    End
    Get ComLoadFile Of hoJsonToken "qa_data/tokens/constantContact.json" To iSuccess
    If (iSuccess <> True) Begin
        Showln "Failed to load constantContact.json"
        Procedure_Return
    End

    // The access token JSON looks like this:

    // {
    //   "access_token": "aEr4czHReESHUGcc2LRknzsMxUbW",
    //   "refresh_token": "s2qH27ikM7r3Ia0LrZGDOIgKw0bubUotBdJ7fTtc7y",
    //   "token_type": "Bearer"
    // }

    Get Create (RefClass(cComChilkatOAuth2)) To hoOauth2
    If (Not(IsComObjectCreated(hoOauth2))) Begin
        Send CreateComObject of hoOauth2
    End

    Set ComVerboseLogging Of hoOauth2 To True

    Set ComTokenEndpoint Of hoOauth2 To "https://idfed.constantcontact.com/as/token.oauth2"
    Set ComUseBasicAuth Of hoOauth2 To True
    Set ComUncommonOptions Of hoOauth2 To "OAUTH2_REFRESH_NO_SCOPE"

    // Replace these with actual values.
    Set ComClientId Of hoOauth2 To "CLIENT_KEY"
    Set ComClientSecret Of hoOauth2 To "CLIENT_SECRET"

    // Get the "refresh_token"
    Get ComStringOf Of hoJsonToken "refresh_token" To sTemp1
    Set ComRefreshToken Of hoOauth2 To sTemp1

    Get ComRefreshToken Of hoOauth2 To sTemp1
    Showln "Existing refresh_token: " sTemp1

    // Send the HTTP POST to refresh the access token..
    Get ComRefreshAccessToken Of hoOauth2 To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoOauth2 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComAccessToken Of hoOauth2 To sTemp1
    Get ComUpdateString Of hoJsonToken "access_token" sTemp1 To iSuccess
    Get ComRefreshToken Of hoOauth2 To sTemp1
    Get ComUpdateString Of hoJsonToken "refresh_token" sTemp1 To iSuccess

    // Save the new JSON access token response to a file.
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbJson
    If (Not(IsComObjectCreated(hoSbJson))) Begin
        Send CreateComObject of hoSbJson
    End
    Set ComEmitCompact Of hoJsonToken To False
    Get pvComObject of hoSbJson to vSbJson
    Get ComEmitSb Of hoJsonToken vSbJson To iSuccess
    Get ComWriteFile Of hoSbJson "qa_data/tokens/constantContact.json" "utf-8" False To iSuccess

    Showln "OAuth2 token refreshed!"
    Get ComAccessToken Of hoOauth2 To sTemp1
    Showln "New Access Token = " sTemp1
    Get ComRefreshToken Of hoOauth2 To sTemp1
    Showln "New refresh_token: " sTemp1


End_Procedure

 

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