public async Task <OauthToken> GetAccessToken(OauthToken token)
{
AuthorizationParameters = new Dictionary <string, string>()
{
{ OauthParameter.OauthConsumerKey, _keys.Value.ConsumerKey },
{ OauthParameter.OauthNonce, GetNonce() },
{ OauthParameter.OauthSignatureMethod, OAuthSignatureMethod },
{ OauthParameter.OauthTimestamp, GetTimeStamp() },
{ OauthParameter.OauthToken, token.Token },
{ OauthParameter.OauthVerifier, token.Verifier },
{ OauthParameter.OauthVersion, OAuthVersion }
};
Sign(AccessTokenUrl, _keys.Value.ConsumerSecret, token.Secret, "POST", "");
var response = await PostRequest(AccessTokenUrl);
return(ParseReponse(response));
}
protected OauthToken ParseReponse(string response)
{
var token = new OauthToken();
if (string.IsNullOrEmpty(response))
{
return(token);
}
// "oauth_token=qWnfRDBG47T57ud3peQeYtWHjoGSlbYtAwboQZuD&oauth_token_secret=iZJG3SKMA8BJexk4iEtQTwZmbstfR1TqoY1yKBo6&oauth_callback_confirmed=true" string
var keyValPairs = response.Split('&');
foreach (var splits in keyValPairs.Select(t => t.Split('=')))
{
switch (splits[0])
{
case "oauth_token":
token.Token = splits[1];
break;
case "oauth_token_secret":
token.Secret = splits[1];
break;
case "oauth_expires_in":
int seconds;
if (int.TryParse(splits[1], out seconds))
{
token.Expires = DateTime.Now.AddSeconds(seconds);
}
break;
case "oauth_session_handle":
token.SessionHandle = splits[1];
break;
}
}
return(token);
}
/// <summary>
/// A callback is needed to get back oauth_token and oauth_verifier
/// </summary>
/// <param name="token"></param>
/// <returns></returns>
public string GetAuthorizationUrl(OauthToken token)
{
return(AuthorizeUrl + "?oauth_token=" + token.Token);
}