public static AuthResponse Exchange(string authCode, string clientid, string secret, string redirectURI)
{
var request = (HttpWebRequest)WebRequest.Create("https://www.googleapis.com/oauth2/v3/token");
string postData = string.Format("code={0}&client_id={1}&client_secret={2}&redirect_uri={3}&grant_type=authorization_code&scope={4}", HttpUtility.UrlEncode(authCode), HttpUtility.UrlEncode(clientid), HttpUtility.UrlEncode(secret), HttpUtility.UrlEncode(redirectURI), "");
var data = Encoding.ASCII.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded; charset=utf-8";
request.ContentLength = data.Length;
using (var stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
var x = AuthResponse.get(responseString);
x.clientId = clientid;
x.secret = secret;
return(x);
}
public void refresh()
{
var request = (HttpWebRequest)WebRequest.Create("https://accounts.google.com/o/oauth2/token");
string postData = string.Format("client_id={0}&client_secret={1}&refresh_token={2}&grant_type=refresh_token", this.clientId, this.secret, this.refresh_token);
var data = Encoding.ASCII.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;
using (var stream = request.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
var refreshResponse = AuthResponse.get(responseString);
this.access_token = refreshResponse.access_token;
this.created = DateTime.Now;
}
