public AuthResponse Authenticate(AuthenticateSettings authenticateSettings)
{
AuthResponse twitAuthResponse = null;
// Do the Authenticate
var authHeaderFormat = "Basic {0}";
var authHeader = string.Format(
authHeaderFormat,
Convert.ToBase64String(
Encoding.UTF8.GetBytes(
Uri.EscapeDataString(authenticateSettings.OAuthConsumerKey) +
":" +
Uri.EscapeDataString(authenticateSettings.OAuthConsumerSecret)
)
)
);
var postBody = "grant_type=client_credentials";
HttpWebRequest authRequest = (HttpWebRequest)WebRequest.Create(authenticateSettings.OAuthUrl);
authRequest.Headers.Add("Authorization", authHeader);
authRequest.Method = "POST";
authRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
authRequest.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
using (Stream stream = authRequest.GetRequestStream()) {
byte[] content = ASCIIEncoding.ASCII.GetBytes(postBody);
stream.Write(content, 0, content.Length);
}
authRequest.Headers.Add("Accept-Encoding", "gzip");
WebResponse authResponse = authRequest.GetResponse();
// deserialize into an object
using (authResponse) {
using (var reader = new StreamReader(authResponse.GetResponseStream())) {
JavaScriptSerializer js = new JavaScriptSerializer();
var objectText = reader.ReadToEnd();
twitAuthResponse = JsonConvert.DeserializeObject<AuthResponse>(objectText);
}
}
return twitAuthResponse;
}
public static OAuthTwitterHelper GetTwitterHelper()
{
if (_twitterHelper == null) {
string consumerKey = ConfigurationManager.AppSettings["twitterConsumerKey"];
string consumerSecret = ConfigurationManager.AppSettings["twitterConsumerSecret"];
string oAuth2TokenUrl = ConfigurationManager.AppSettings["twitterOAuth2TokenUrl"];
var authSettings = new AuthenticateSettings {
OAuthConsumerKey = consumerKey,
OAuthConsumerSecret = consumerSecret,
OAuthUrl = oAuth2TokenUrl
};
_twitterHelper = new OAuthTwitterHelper(authSettings);
}
return _twitterHelper;
}
public OAuthTwitterHelper(AuthenticateSettings authSettings)
{
_authSettings = authSettings;
}
