Xbase++

Vonage UC Extend Refresh Access Token

See more OAuth2 Examples

Refreshes the access token for Vonage UC Extend apps. Xbase++

LOCAL nSuccess
LOCAL oJsonToken
LOCAL oOauth2
LOCAL oDtExpire
LOCAL oSbJson

nSuccess := 0

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

//  See Get Vonage UC Access Token 
//  for sample code showing how to obtain a Vonage access token for desktop apps.

oJsonToken := CreateObject("Chilkat.JsonObject")
nSuccess := oJsonToken:LoadFile("qa_data/tokens/vonage_uc_extend.json")
IF (nSuccess != 1)
    ? "Failed to load vonage_uc_extend.json"
    oJsonToken:destroy()
    RETURN
ENDIF

oOauth2 := CreateObject("Chilkat.OAuth2")

oOauth2:TokenEndpoint := "https://api.vonage.com/token"

//  Replace these with actual values.
oOauth2:ClientId := "CLIENT_ID"
oOauth2:ClientSecret := "CLIENT_SECRET"

//  Get the "refresh_token"
oOauth2:RefreshToken := oJsonToken:StringOf("refresh_token")

//  Send the HTTP POST to refresh the access token..
oOauth2:VerboseLogging := 1
nSuccess := oOauth2:RefreshAccessToken()
IF (nSuccess != 1)
    ? oOauth2:LastErrorText
    oJsonToken:destroy()
    oOauth2:destroy()
    RETURN
ENDIF

//  Load the access token response into the json object 
oJsonToken:Load(oOauth2:AccessTokenResponse)

//  If an "expires_on" member does not exist, then add the JSON member by
//  getting the current system date/time and adding the "expires_in" seconds.
//  This way we'll know when the token expires.
IF (oJsonToken:HasMember("expires_on") == 0)
    oDtExpire := CreateObject("Chilkat.CkDateTime")
    oDtExpire:SetFromCurrentSystemTime()
    oDtExpire:AddSeconds(oJsonToken:IntOf("expires_in"))
    oJsonToken:AppendString("expires_on", oDtExpire:GetAsUnixTimeStr(0))
ENDIF

//  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.
oSbJson := CreateObject("Chilkat.StringBuilder")
oJsonToken:EmitCompact := 0
oJsonToken:EmitSb(oSbJson)
oSbJson:WriteFile("qa_data/tokens/vonage_uc_extend.json", "utf-8", 0)

? "OAuth2 authorization granted!"
? "New Access Token = " + oOauth2:AccessToken

oJsonToken:destroy()
oOauth2:destroy()
oDtExpire:destroy()
oSbJson:destroy()