How to get Expiration Date of access token in Facebook SDK for Unity

Question

I am using parse sdk for backend management for my game. For user signup/login parse api ask for parameter tokenExpiration. I have no idea how to get it from facebook unity sdk. https://www.parse.com/docs/unity_guide#fbusers-signup

Task<ParseUser> logInTask = ParseFacebookUtils.LogInAsync(accessToken, userId, tokenExpiration);

Answer 1

Got this problem solved by myself using debug_token. Here is the right code on how to do it.

FB.API("/debug_token?input_token="+FB.AccessToken+"&access_token="+FB.AccessToken,Facebook.HttpMethod.GET, AccessTokenCallback);
function AccessTokenCallback(response:String){
Debug.Log(response);
var access = JSON.Parse(response);
Debug.Log("Token Expiration is: "+access["data"]["expires_at"].Value);
}

If you will print the response it will give you a JSON with all information about the access token and you can take whatever info you need about an access token.