public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", ConnectionToken.AuthorizationToken);
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
oauthParameters.Add("oauth_verifier", ConnectionToken.OauthVerifier);
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, ConnectionToken.TokenSecret);
oauthParameters.Add("oauth_signature", signature);
//2. Notify Consumer (if applicable)
BeforeRequestingAccessToken(oauthParameters); // hook called
//3.Connect and obtain Token
string targetUrl = provider.AccessTokenEndpoint + "?" +
oauthHelper.GetAuthorizationUrlParameters(oauthParameters);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(targetUrl);
request.Method = provider.TransportName.ToString();
//request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParameters));
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at " + provider.AccessTokenEndpoint);
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
var responseCollection = Utility.GetQuerystringParameters(response);
HandleAccessTokenResponse(responseCollection);
AfterGettingAccessToken(responseCollection, ConnectionToken);
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
}
}
public override System.Net.WebResponse ExecuteFeed(string feedURL, IProvider provider, BusinessObjects.Token connectionToken, BusinessObjects.TRANSPORT_METHOD transportMethod)
{
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
QueryParameters oauthParams = new QueryParameters();
oauthParams.Add("oauth_consumer_key", provider.Consumerkey);
oauthParams.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParams.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParams.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParams.Add("oauth_token", connectionToken.AccessToken);
oauthParams.Add("oauth_version", "1.0");
////1. Generate Signature
signature = oauthHelper.GenerateSignature(new Uri(feedURL), oauthParams, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, TRANSPORT_METHOD.GET, connectionToken.TokenSecret);
oauthParams.Add("oauth_signature", signature);
//3.Connect and Execute Feed
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(feedURL);
request.Method = transportMethod.ToString();
request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParams));
//request.ContentType = "application/atom+xml";
request.ContentLength = 0;
WebResponse wr;
try
{
logger.Debug("Executing " + feedURL + " using " + transportMethod.ToString() + Environment.NewLine + "Request Parameters: " + oauthParams.ToString());
wr = (WebResponse)request.GetResponse();
logger.Info("Successfully executed " + feedURL + " using " + transportMethod.ToString());
}
catch (Exception ex)
{
logger.Error(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
throw new OAuthException(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
}
return(wr);
}
public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", Utility.UrlEncode(ConnectionToken.RequestToken));
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
BeforeRequestingAccessToken(oauthParameters); // hook called
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, string.Empty);
oauthParameters.Add("oauth_signature", Utility.UrlEncode(signature));
//2. Notify Consumer (if applicable)
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(provider.AccessTokenEndpoint + "?" + oauthParameters.ToString().Replace("HMACSHA1", "HMAC-SHA1"));
request.Method = "GET";// always get irrespective of provider.TransportName.ToString();
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at: " + request.RequestUri + Environment.NewLine + "Request Parameters: " + oauthParameters.ToString());
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
HandleAccessTokenResponse(Utility.GetQuerystringParameters(response));
}
}
catch (Exception ex)
{
logger.Debug(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
}
}
public override System.Net.WebResponse ExecuteFeed(string feedURL, IProvider provider, BusinessObjects.Token connectionToken, BusinessObjects.TRANSPORT_METHOD transportMethod, byte[] content = null, Dictionary<string, string> headers = null)
{
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
string timestamp = oauthHelper.GenerateTimeStamp();
QueryParameters oauthParams = new QueryParameters();
oauthParams.Add("oauth_consumer_key", provider.Consumerkey);
oauthParams.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParams.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParams.Add("oauth_timestamp", timestamp);
oauthParams.Add("oauth_token", connectionToken.AccessToken);
oauthParams.Add("oauth_version", "1.0");
signature = oauthHelper.GenerateSignature(new Uri(feedURL), oauthParams, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, TRANSPORT_METHOD.POST, connectionToken.TokenSecret);
oauthParams.Add("oauth_signature", signature);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(feedURL);
request.Method = transportMethod.ToString();
if (headers != null)
{
foreach (var header in headers)
{
switch (header.Key)
{
case "ContentLength":
{
request.ContentLength = long.Parse(header.Value);
break;
}
case "ContentType":
{
request.ContentType = header.Value;
break;
}
default:
{
request.Headers[header.Key] = header.Value;
break;
}
}
}
}
request.ContentLength = (content == null) ? 0 : content.Length;
request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParams));
request.GetRequestStream().Write(content, 0, content.Length);
WebResponse wr = null;
try
{
logger.Debug("Executing " + feedURL + " using " + transportMethod.ToString() + Environment.NewLine + "Request Parameters: " + oauthParams.ToString());
wr = (WebResponse)request.GetResponse();
logger.Info("Successfully executed " + feedURL + " using " + transportMethod.ToString());
}
catch (Exception ex)
{
logger.Error(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
throw new OAuthException(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
}
return wr;
}
public override System.Net.WebResponse ExecuteFeed(string feedURL, IProvider provider, BusinessObjects.Token connectionToken, BusinessObjects.TRANSPORT_METHOD transportMethod)
{
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
QueryParameters oauthParams = new QueryParameters();
oauthParams.Add("oauth_consumer_key", provider.Consumerkey);
oauthParams.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParams.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParams.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParams.Add("oauth_token", connectionToken.AccessToken);
oauthParams.Add("oauth_version", "1.0");
////1. Generate Signature
signature = oauthHelper.GenerateSignature(new Uri(feedURL), oauthParams, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, TRANSPORT_METHOD.GET, connectionToken.TokenSecret);
oauthParams.Add("oauth_signature", signature);
//3.Connect and Execute Feed
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(feedURL);
request.Method = transportMethod.ToString();
request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParams));
//request.ContentType = "application/atom+xml";
request.ContentLength = 0;
WebResponse wr;
try
{
logger.Debug("Executing " + feedURL + " using " + transportMethod.ToString() + Environment.NewLine + "Request Parameters: " + oauthParams.ToString());
wr = (WebResponse)request.GetResponse();
logger.Info("Successfully executed " + feedURL + " using " + transportMethod.ToString());
}
catch (Exception ex)
{
logger.Error(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
throw new OAuthException(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
}
return wr;
}
public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", Utility.UrlEncode(ConnectionToken.RequestToken));
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
BeforeRequestingAccessToken(oauthParameters); // hook called
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, string.Empty);
oauthParameters.Add("oauth_signature", Utility.UrlEncode(signature));
//2. Notify Consumer (if applicable)
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(provider.AccessTokenEndpoint + "?" + oauthParameters.ToString().Replace("HMACSHA1", "HMAC-SHA1"));
request.Method = "GET";// always get irrespective of provider.TransportName.ToString();
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at: " + request.RequestUri + Environment.NewLine + "Request Parameters: " + oauthParameters.ToString());
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
HandleAccessTokenResponse(Utility.GetQuerystringParameters(response));
}
}
catch (Exception ex)
{
logger.Debug(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(request.RequestUri.ToString(), oauthParameters), ex);
}
}
public override System.Net.WebResponse ExecuteFeed(string feedURL, IProvider provider, BusinessObjects.Token connectionToken, BusinessObjects.TRANSPORT_METHOD transportMethod, byte[] content = null, Dictionary <string, string> headers = null)
{
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
string timestamp = oauthHelper.GenerateTimeStamp();
QueryParameters oauthParams = new QueryParameters();
oauthParams.Add("oauth_consumer_key", provider.Consumerkey);
oauthParams.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParams.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParams.Add("oauth_timestamp", timestamp);
oauthParams.Add("oauth_token", connectionToken.AccessToken);
oauthParams.Add("oauth_version", "1.0");
signature = oauthHelper.GenerateSignature(new Uri(feedURL), oauthParams, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, TRANSPORT_METHOD.POST, connectionToken.TokenSecret);
oauthParams.Add("oauth_signature", signature);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(feedURL);
request.Method = transportMethod.ToString();
if (headers != null)
{
foreach (var header in headers)
{
switch (header.Key)
{
case "ContentLength":
{
request.ContentLength = long.Parse(header.Value);
break;
}
case "ContentType":
{
request.ContentType = header.Value;
break;
}
default:
{
request.Headers[header.Key] = header.Value;
break;
}
}
}
}
request.ContentLength = (content == null) ? 0 : content.Length;
request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParams));
request.GetRequestStream().Write(content, 0, content.Length);
WebResponse wr = null;
try
{
logger.Debug("Executing " + feedURL + " using " + transportMethod.ToString() + Environment.NewLine + "Request Parameters: " + oauthParams.ToString());
wr = (WebResponse)request.GetResponse();
logger.Info("Successfully executed " + feedURL + " using " + transportMethod.ToString());
}
catch (Exception ex)
{
logger.Error(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
throw new OAuthException(ErrorMessages.CustomFeedExecutionError(feedURL, oauthParams), ex);
}
return(wr);
}
public void RequestForRequestToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
//Twitter Test @ https://dev.twitter.com/docs/auth/oauth
//oauthParameters.Add("oauth_callback", "http://localhost:3005/the_dance/process_callback?service_provider_id=11");
//oauthParameters.Add("oauth_consumer_key", "GDdmIQH6jhtmLUypg82g");
//oauthParameters.Add("oauth_nonce", "QP70eNmVz8jvdPevU3oJD2AfF7R7odC2XJcn4XlZJqk");
//oauthParameters.Add("oauth_signature_method", "HMAC-SHA1");
//oauthParameters.Add("oauth_timestamp", "1272323042");
//oauthParameters.Add("oauth_version", "1.0");
//signature = oauthHelper.GenerateSignature(new Uri(provider.RequestTokenEndpoint), oauthParameters, "GDdmIQH6jhtmLUypg82g", "MCD8BKwGdgPHvAuvgvz4EQpqDAtx89grbuNMRd7Eh98", provider.SignatureMethod, provider.TransportName, string.Empty);
////1. Setup request parameters
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
oauthParameters.Add("oauth_callback", ConnectionToken.Domain + "");
//2. Notify Consumer (optionally user may wish to add extra parameters)
BeforeRequestingRequestToken(oauthParameters); // hook called
oauthParameters.ToList().ForEach(x => x.Value = Utility.UrlEncode(x.Value));
//3. Generate Signature
signature = oauthHelper.GenerateSignature(new Uri(provider.RequestTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, string.Empty);
oauthParameters.Add("oauth_signature", signature);
//4.Connect and obtain Token
logger.Debug("Requesting Request Token at: " + provider.RequestTokenEndpoint);
string requestUrl = provider.RequestTokenEndpoint + "?" + oauthHelper.GetAuthorizationUrlParameters(oauthParameters);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUrl);
request.Method = provider.TransportName.ToString();
//request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParameters));
request.ContentLength = 0;
//request.ContentType = "application/x-www-form-urlencoded";
//TODO: Check issue with Authorization Header
string response = "";
try
{
logger.Debug("Requesting Request Token at: " + provider.RequestTokenEndpoint);
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
if (response.Contains("oauth_token_secret"))
{
logger.Debug("Request Token response: " + response.ToString());
var responseCollection = Utility.GetQuerystringParameters(response);
HandleRequestTokenGrant(responseCollection);
}
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.RequestTokenRequestError(provider.RequestTokenEndpoint, oauthParameters), ex);
throw new OAuthException(ErrorMessages.RequestTokenRequestError(provider.RequestTokenEndpoint, oauthParameters), ex);
}
}
public void RequestForRequestToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
//Twitter Test @ https://dev.twitter.com/docs/auth/oauth
//oauthParameters.Add("oauth_callback", "http://localhost:3005/the_dance/process_callback?service_provider_id=11");
//oauthParameters.Add("oauth_consumer_key", "GDdmIQH6jhtmLUypg82g");
//oauthParameters.Add("oauth_nonce", "QP70eNmVz8jvdPevU3oJD2AfF7R7odC2XJcn4XlZJqk");
//oauthParameters.Add("oauth_signature_method", "HMAC-SHA1");
//oauthParameters.Add("oauth_timestamp", "1272323042");
//oauthParameters.Add("oauth_version", "1.0");
//signature = oauthHelper.GenerateSignature(new Uri(provider.RequestTokenEndpoint), oauthParameters, "GDdmIQH6jhtmLUypg82g", "MCD8BKwGdgPHvAuvgvz4EQpqDAtx89grbuNMRd7Eh98", provider.SignatureMethod, provider.TransportName, string.Empty);
////1. Setup request parameters
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
oauthParameters.Add("oauth_callback", connectionToken.Domain + "SocialAuth/validate.sauth");
//2. Notify Consumer (optionally user may wish to add extra parameters)
BeforeRequestingRequestToken(oauthParameters); // hook called
//3. Generate Signature
signature = oauthHelper.GenerateSignature(new Uri(provider.RequestTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, string.Empty);
oauthParameters.Add("oauth_signature", signature);
//4.Connect and obtain Token
logger.Debug("Requesting Request Token at: " + provider.RequestTokenEndpoint);
string requestUrl = provider.RequestTokenEndpoint + "?" + oauthHelper.GetAuthorizationUrlParameters(oauthParameters);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(requestUrl);
request.Method = provider.TransportName.ToString();
//request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParameters));
request.ContentLength = 0;
//request.ContentType = "application/x-www-form-urlencoded";
//TODO: Check issue with Authorization Header
string response = "";
try
{
logger.Debug("Requesting Request Token at: " + provider.RequestTokenEndpoint);
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
if (response.Contains("oauth_token_secret"))
{
logger.Debug("Request Token response: " + response.ToString());
var responseCollection = Utility.GetQuerystringParameters(response);
HandleRequestTokenGrant(responseCollection);
}
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.RequestTokenRequestError(provider.RequestTokenEndpoint, oauthParameters), ex);
throw new OAuthException(ErrorMessages.RequestTokenRequestError(provider.RequestTokenEndpoint, oauthParameters), ex);
}
}
public void RequestForAccessToken()
{
QueryParameters oauthParameters = new QueryParameters();
string signature = "";
OAuthHelper oauthHelper = new OAuthHelper();
////1. Generate Signature
oauthParameters.Add("oauth_consumer_key", provider.Consumerkey);
oauthParameters.Add("oauth_token", connectionToken.AuthorizationToken);
oauthParameters.Add("oauth_signature_method", provider.SignatureMethod.ToString());
oauthParameters.Add("oauth_timestamp", oauthHelper.GenerateTimeStamp());
oauthParameters.Add("oauth_nonce", oauthHelper.GenerateNonce());
oauthParameters.Add("oauth_version", "1.0");
oauthParameters.Add("oauth_verifier", connectionToken.OauthVerifier);
signature = oauthHelper.GenerateSignature(new Uri(provider.AccessTokenEndpoint), oauthParameters, provider.Consumerkey, provider.Consumersecret, provider.SignatureMethod, provider.TransportName, connectionToken.TokenSecret);
oauthParameters.Add("oauth_signature", signature);
//2. Notify Consumer (if applicable)
BeforeRequestingAccessToken(oauthParameters); // hook called
//3.Connect and obtain Token
string targetUrl = provider.AccessTokenEndpoint + "?" +
oauthHelper.GetAuthorizationUrlParameters(oauthParameters);
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(targetUrl);
request.Method = provider.TransportName.ToString();
//request.Headers.Add("Authorization", oauthHelper.GetAuthorizationHeader(oauthParameters));
request.ContentLength = 0;
string response = "";
try
{
logger.Debug("Requesting Access Token at " + provider.AccessTokenEndpoint);
using (HttpWebResponse webResponse = (HttpWebResponse)request.GetResponse())
using (Stream responseStream = webResponse.GetResponseStream())
using (StreamReader reader = new StreamReader(responseStream))
{
response = reader.ReadToEnd();
var responseCollection = Utility.GetQuerystringParameters(response);
HandleAccessTokenResponse(responseCollection);
}
}
catch (Exception ex)
{
logger.Error(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
throw new OAuthException(ErrorMessages.AccessTokenRequestError(provider.AccessTokenEndpoint, oauthParameters), ex);
}
}