Go

Yahoo Mail Refresh OAuth2 Access Token

See more Yahoo Mail Examples

Demonstrates how to refresh an OAuth2 Yahoo Mail access token. Go

    success := false

    // 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 Yahoo Mail OAuth2 Access Token

    jsonToken := chilkat.NewJsonObject()
    success = jsonToken.LoadFile("qa_data/tokens/yahooMail.json")
    if success != true {
        fmt.Println("Failed to load googleSheets.json")
        jsonToken.DisposeJsonObject()
        return
    }

    // The access token JSON looks like this:

    // {
    //   "access_token": "kCVQdnOdul...LHucA--",
    //   "refresh_token": "AIenVWETSo0jklFBVkPS8vVm8E.Dj9ToRG.xDbDYmZ55WIs5t6CZhDkD",
    //   "expires_in": 3600,
    //   "token_type": "bearer",
    //   "xoauth_yahoo_guid": "HGDQCVF6JB4YDOWHITPJFBHCWA"
    // }

    oauth2 := chilkat.NewOAuth2()

    // See Step 5 at https://developer.yahoo.com/oauth2/guide/flows_authcode/
    oauth2.SetTokenEndpoint("https://api.login.yahoo.com/oauth2/get_token")

    // Replace these with actual values.
    oauth2.SetClientId("CLIENT_ID")
    oauth2.SetClientSecret("CLIENT_SECRET")

    // Get the "refresh_token"
    oauth2.SetRefreshToken(jsonToken.StringOf("refresh_token"))

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken()
    if success != true {
        fmt.Println(oauth2.LastErrorText())
        jsonToken.DisposeJsonObject()
        oauth2.DisposeOAuth2()
        return
    }

    // The response contains a new access token, but we must keep
    // our existing refresh token for when we need to refresh again in the future.
    jsonToken.UpdateString("access_token",oauth2.AccessToken())

    // Save the new JSON access token response to a file.
    sbJson := chilkat.NewStringBuilder()
    jsonToken.SetEmitCompact(false)
    jsonToken.EmitSb(sbJson)
    sbJson.WriteFile("qa_data/tokens/yahooMail.json","utf-8",false)

    fmt.Println("OAuth2 authorization granted!")
    fmt.Println("New Access Token = ", oauth2.AccessToken())

    jsonToken.DisposeJsonObject()
    oauth2.DisposeOAuth2()
    sbJson.DisposeStringBuilder()