Nguyen,

It is working for me, can your provide the request/response including headers? Also, you can use the C# open social sdk to make this a bit easier: http://developer.yahoo.com/social/sdk/#opensocial

Hi Dustin,


Sorry for the late response.
I am currently get an other issue which i mentioned here: http://developer.yahoo.net/forum/index.php...&#entry9916


If you have any suggestion, please let me know. Thank you very much.

I am also having a problem with 401 error when trying to get a request token from yahoo contact api. I am using the latest OAuthBase.cs
This is very frustrating I don't know why it has to be so complicated to get this working. PLEASE HELP!!!!

Here is the code being used:

Uri YahooAuthRequestToken = new Uri("https://api.login.yahoo.com/oauth/v2/get_request_token");

OAuth.OAuthBase oAuth = new OAuth.OAuthBase();
string nonce = oAuth.GenerateNonce();
string timeStamp = oAuth.GenerateTimeStamp();
string sig = oAuth.GenerateSignature(YahooAuthRequestToken,
consumerKey, consumerSecret,
string.Empty, string.Empty,
"GET", timeStamp, nonce,
OAuth.OAuthBase.SignatureTypes.HMACSHA1,out normaluri , out normaluriparam);

sig = HttpUtility.UrlEncode(sig);

StringBuilder sb = new StringBuilder(YahooAuthRequestToken.ToString());
sb.AppendFormat("?oauth_callback={0}&", "oob");
sb.AppendFormat("oauth_consumer_key={0}&", consumerKey);
sb.AppendFormat("oauth_nonce={0}&", nonce);
sb.AppendFormat("oauth_timestamp={0}&", timeStamp);
sb.AppendFormat("oauth_signature_method={0}&", "HMAC-SHA1");
sb.AppendFormat("oauth_version={0}&", "1.0");
sb.AppendFormat("oauth_signature={0}", sig.ToString());

try
{

request = WebRequest.Create(sb.ToString()) as HttpWebRequest;


using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader GetAuthToken = new StreamReader(response.GetResponseStream());
YahooAuthToken = GetAuthToken.ReadToEnd();
MessageBox.Show(YahooAuthToken);
}
}
catch (Exception ex)
{
MessageBox.Show( "ERROR: " + ex.Message);
}


HERE IS THE VALUE OF sb.ToString() in the WebRequest.Create(sb.ToString()

https://api.login.yahoo.com/oauth/v2/get_re...llback=oob&
oauth_consumer_key=dj0yJmk0bd...(REMOVED FOR MY APP SECURTIY)...meD1kMw--
&oauth_nonce=4228703&oauth_timestamp=126890185&oauth_signature
_method=HMAC-SHA1&oauth_version=1.0&oauth_signature=kSUT6rXzpTgnDwdmbHMAjNQjOZU%3d

i'm using C# . for twitter api using oauth no problem but yahoo api i have 401 error when i send request get_request_token

Can you show me an example in c# please.
thanks

Hi All,

I'm having the same problem. The same code that I use to connect using oAuth is working for LinkedIn, Twitter, PhotoBucket and Smugmug...

I need to make it work for Yahoo asap.

I don't know what is happening because I'm generating the query string as in the Yahoo API documentation.

It throws me an exception when get_request_token (a 401 one) and when looking at the details it says OAuth oauth_problem=signature_invalid

The strange thing is that I'm using oAuthBase that is a C# class that is a generic one. In the other Social Networks is working but not in Yahoo.

I added the parameter oauth_callback because perhaps it was the reason of the error because it was missing but it wasn't.

Any ideas of whas is happening?

Thanks!

 I catched the same thing

Same problem for me. :(

I found a much simpler solution. :) See it posted at: http://developer.yahoo.com/forum/OAuth-General-Discussion-YDN-SDKs/401-Unauthorized-access-with-get-request-token/1365023216190-47426b75-954d-43da-9213-a5a10d31b1f3