private string generateAuthorizationHeader(string url, string method, Dictionary<string, string> otherparams)
{
var parameters = new Dictionary<string, string>();
parameters.Add("oauth_version", "1.0");
parameters.Add("oauth_consumer_key", _consumerkey);
parameters.Add("oauth_nonce", Utils.uniqueAlphanumericString());
parameters.Add("oauth_signature_method", "HMAC-SHA1");
parameters.Add("oauth_timestamp", Utils.unix_timestamp().ToString());
parameters.Add("oauth_token", _accesstoken);
foreach (var item in otherparams)
{
parameters[item.Key] = item.Value;
}
parameters = parameters.OrderBy(x => x.Key).ToDictionary(v => v.Key, v => v.Value);
string outputString = method + "&" + Utils.UrlEncodeRelaxed(url) + "&";
foreach (var parameter in parameters)
{
outputString += Utils.UrlEncodeRelaxed(parameter.Key + "=" + parameter.Value + "&");
}
outputString = outputString.Substring(0, outputString.Length - 3);
string signingKey = Utils.UrlEncodeRelaxed(_consumersecret) + "&" + Utils.UrlEncodeRelaxed(_accesssecret);
byte[] hmacsha1 = Utils.hmacsha1ify(outputString, signingKey);
string signature = Convert.ToBase64String(hmacsha1);
string header = "OAuth ";
header += "oauth_consumer_key=\"" + Utils.UrlEncodeRelaxed(parameters["oauth_consumer_key"]) + "\", ";
header += "oauth_nonce=\"" + Utils.UrlEncodeRelaxed(parameters["oauth_nonce"]) + "\", ";
header += "oauth_signature=\"" + Utils.UrlEncodeRelaxed(signature) + "\", ";
header += "oauth_signature_method=\"HMAC-SHA1\", ";
header += "oauth_timestamp=\"" + Utils.UrlEncodeRelaxed(parameters["oauth_timestamp"]) + "\", ";
header += "oauth_token=\"" + Utils.UrlEncodeRelaxed(parameters["oauth_token"]) + "\", ";
header += "oauth_version=\"1.0\"";
return header;
}