Hi
Please Help.
I keep getting 401 un authorized error. It worked once yesterday and when i executed the code for second time, it stopped working! Once it stopped, i have removed the application and created a new application and updated the keys and secret.but still i keep getting the same error. please suggest.
var oauth_token = "xxxxxx-xxxxxxxxxx";
var oauth_token_secret = "xxxxxxxxxxx";
var oauth_consumer_key = "xxxxxxxxxxx";
var oauth_consumer_secret = "xxxxxxxxx";
var oauth_version = "1.0";
var oauth_signature_method = "HMAC-SHA1";
var oauth_nonce = Convert.ToBase64String(
new ASCIIEncoding().GetBytes(
DateTime.Now.Ticks.ToString()));
var timeSpan = DateTime.Now
- new DateTime(1960, 1, 1, 0, 0, 0, 0,
DateTimeKind.Local);
var oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();
var resource_url = "http://api.twitter.com/1.1/statuses/update.json";
var status = "Updating status via REST API if this works again!!!!";
var baseFormat = "oauth_consumer_key={0}&oauth_nonce={1}&oauth_signature_method={2}" +
"&oauth_timestamp={3}&oauth_token={4}&oauth_version={5}&status={6}";
var baseString = string.Format(baseFormat,
oauth_consumer_key,
oauth_nonce,
oauth_signature_method,
oauth_timestamp,
oauth_token,
oauth_version,
Uri.EscapeDataString(status)
);
baseString = string.Concat("POST&", Uri.EscapeDataString(resource_url),
"&", Uri.EscapeDataString(baseString));
var compositeKey = string.Concat(Uri.EscapeDataString(oauth_consumer_secret),
"&", Uri.EscapeDataString(oauth_token_secret));
string oauth_signature;
using (HMACSHA1 hasher = new HMACSHA1(ASCIIEncoding.ASCII.GetBytes(compositeKey)))
{
oauth_signature = Convert.ToBase64String(
hasher.ComputeHash(ASCIIEncoding.ASCII.GetBytes(baseString)));
}
var headerFormat = "OAuth oauth_consumer_key=\"{0}\", oauth_nonce=\"{1}\", oauth_signature=\"{2}\", oauth_signature_method=\"{3}\", oauth_timestamp=\"{4}\", oauth_token=\"{5}\", oauth_version=\"{6}\"";
var authHeader = string.Format(headerFormat,
Uri.EscapeDataString(oauth_consumer_key),
Uri.EscapeDataString(oauth_nonce),
Uri.EscapeDataString(oauth_signature),
Uri.EscapeDataString(oauth_signature_method),
Uri.EscapeDataString(oauth_timestamp),
Uri.EscapeDataString(oauth_token),
Uri.EscapeDataString(oauth_version)
);
var postBody = "status=" + Uri.EscapeDataString(status);
ServicePointManager.Expect100Continue = false;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(resource_url);
request.Headers.Add("Authorization", authHeader);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
using (Stream stream = request.GetRequestStream())
{
byte[] content = ASCIIEncoding.ASCII.GetBytes(postBody);
stream.Write(content, 0, content.Length);
}
WebResponse response = null; ;
try
{
response = request.GetResponse();
}
catch (Exception exp)
{
Response.Write(exp.Message);
//Response.Write(response.ToString());
}
Response.Write("Done!");
}
