It works when you search a single word, fails when you search multiple words.
Error:
The remote server returned an error: (401) Unauthorized.-2146233079 at System.Net.HttpWebRequest.GetResponse() at Twitter.d__0.MoveNext()
OAuth Code for Search API:
try
{
string searchTerm = searchTermTextBox.Text + “-filter:retweets” + “&result_type=recent”;
string url = ConfigurationManager.AppSettings[“TwitterUrl”] + “?q=” + searchTerm;
string oauth_token = ConfigurationManager.AppSettings["AccessToken"];
string oauth_consumer_key = ConfigurationManager.AppSettings["ConsumerKey"];
string oauth_version = "1.0";
string oauth_signature_method = "HMAC-SHA1";
var timeSpan = DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
string oauth_timestamp = Convert.ToInt64(timeSpan.TotalSeconds).ToString();
string oauth_nonce = Convert.ToBase64String(new ASCIIEncoding().GetBytes(DateTime.Now.Ticks.ToString()));
SortedDictionary<string, string> sd = new SortedDictionary<string, string>();
sd.Add("q", searchTerm);
sd.Add("oauth_version", oauth_version);
sd.Add("oauth_consumer_key", oauth_consumer_key);
sd.Add("oauth_nonce", oauth_nonce);
sd.Add("oauth_signature_method", oauth_signature_method);
sd.Add("oauth_timestamp", oauth_timestamp);
sd.Add("oauth_token", oauth_token);
//Build the signature string
string baseString = String.Empty;
baseString += "GET" + "&";
baseString += Uri.EscapeDataString(ConfigurationManager.AppSettings["TwitterUrl"]) + "&";
foreach (KeyValuePair<string, string> entry in sd)
{
baseString += Uri.EscapeDataString(entry.Key +
"=" + entry.Value + "&");
}
baseString = baseString.Substring(0, baseString.Length - 3);
//Build the signing key
string oauth_token_secret = ConfigurationManager.AppSettings["AccessTokenSecret"];
string oauth_consumer_secret = ConfigurationManager.AppSettings["ConsumerSecret"];
string signingKey = Uri.EscapeDataString(oauth_consumer_secret) + "&" + Uri.EscapeDataString(oauth_token_secret);
//Sign the request
HMACSHA1 hasher = new HMACSHA1(new ASCIIEncoding().GetBytes(signingKey));
string signatureString = Convert.ToBase64String(hasher.ComputeHash(new ASCIIEncoding().GetBytes(baseString)));
ServicePointManager.Expect100Continue = false;
string authorizationHeaderParams = String.Empty;
authorizationHeaderParams += "OAuth ";
authorizationHeaderParams += "oauth_nonce=" + "\"" + Uri.EscapeDataString(oauth_nonce) + "\",";
authorizationHeaderParams += "oauth_signature_method=" + "\"" + Uri.EscapeDataString(oauth_signature_method) + "\",";
authorizationHeaderParams += "oauth_timestamp=" + "\"" + Uri.EscapeDataString(oauth_timestamp) + "\",";
authorizationHeaderParams += "oauth_consumer_key=" + "\"" + Uri.EscapeDataString(oauth_consumer_key) + "\",";
authorizationHeaderParams += "oauth_token=" + "\"" + Uri.EscapeDataString(oauth_token) + "\",";
authorizationHeaderParams += "oauth_signature=" + "\"" + Uri.EscapeDataString(signatureString) + "\",";
authorizationHeaderParams += "oauth_version=" + "\"" + Uri.EscapeDataString(oauth_version) + "\"";
WebRequest request = WebRequest.Create(url);
request.Method = "GET";
request.ContentType = "application/x-www-form-urlencoded";
request.Headers.Add("Authorization", authorizationHeaderParams);
WebResponse response;
using (response = request.GetResponse())
{
using (Stream stream = response.GetResponseStream())
{
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
//do something
}
}
}
}
catch (Exception ex)
{
//log exception
}
