(PowerBuilder) GeoOp Exchange Refresh Token for New Access Token

Demonstrates how to use the /oauth2/token endpoint to exchange it for a new access token once the current access token has expired.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_JsonToken
integer li_Success
oleobject loo_Rest
integer li_BAutoReconnect
string ls_ResponseBody
oleobject loo_Json

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

// This example also assumes that OAuth2 access and refresh tokens were previously fetched.
// and saved in a JSON file.  

// First get our previously obtained refresh token.
// { .... "refresh_token":"e6dqdG....mzjpT04w==", .... }
loo_JsonToken = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_JsonToken.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_JsonToken
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_JsonToken.LoadFile("qa_data/tokens/geoop.json")

loo_Rest = create oleobject
// Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")

// Connect to GeoOp...
li_BAutoReconnect = 1
li_Success = loo_Rest.Connect("login.geoop.com",443,1,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_JsonToken
    destroy loo_Rest
    return
end if

// Set the X-Version header.
loo_Rest.AddHeader("X-Version","1.0")

// Provide the required form params to get the new access token
Write-Debug "refresh_token = " + loo_JsonToken.StringOf("refresh_token")
loo_Rest.AddQueryParam("refresh_token",loo_JsonToken.StringOf("refresh_token"))
loo_Rest.AddQueryParam("grant_type","refresh_token")
loo_Rest.AddQueryParam("client_id","GEOOP-CLIENT-ID")
loo_Rest.AddQueryParam("client_secret","GEOOP-CLIENT-SECRET")

ls_ResponseBody = loo_Rest.FullRequestFormUrlEncoded("POST","/oauth2/token")
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_JsonToken
    destroy loo_Rest
    return
end if

// If the response status code did not indicate success, then see what happened..
if loo_Rest.ResponseStatusCode <> 200 then
    Write-Debug "Request Header: "
    Write-Debug loo_Rest.LastRequestHeader
    Write-Debug "----"
    Write-Debug "Response StatusCode = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "Response StatusLine: " + loo_Rest.ResponseStatusText
    Write-Debug "Response Header:"
    Write-Debug loo_Rest.ResponseHeader
    Write-Debug ls_ResponseBody
    destroy loo_JsonToken
    destroy loo_Rest
    return
end if

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")

loo_Json.EmitCompact = 0
loo_Json.Load(ls_ResponseBody)

// Show the full JSON response.  It should contain the new access token...
Write-Debug loo_Json.Emit()


destroy loo_JsonToken
destroy loo_Rest
destroy loo_Json