System.Net.BasicClient.Lookup C# (CSharp) Метод

        private Authorization Lookup(HttpWebRequest httpWebRequest, ICredentials credentials) {
            GlobalLog.Print("BasicClient::Lookup(): ChallengedUri:" + httpWebRequest.ChallengedUri.ToString());

            NetworkCredential NC = credentials.GetCredential(httpWebRequest.ChallengedUri, Signature);
            GlobalLog.Print("BasicClient::Lookup() GetCredential() returns:" + ValidationHelper.ToString(NC));

            if (NC==null) {
                return null;
            }

            ICredentialPolicy policy = AuthenticationManager.CredentialPolicy;
            if (policy != null && !policy.ShouldSendCredential(httpWebRequest.ChallengedUri, httpWebRequest, NC, this))
                return null;


            string username = NC.InternalGetUserName();
            string domain = NC.InternalGetDomain();

            if (ValidationHelper.IsBlankString(username)) {
                return null;
            }

            string rawString = ((!ValidationHelper.IsBlankString(domain)) ? (domain + "\\") : "") + username + ":" + NC.InternalGetPassword();

            // The response is an "Authorization:" header where the value is
            // the text "Basic" followed by BASE64 encoded (as defined by RFC1341) value

            byte[] bytes = EncodingRightGetBytes(rawString);
            string responseHeader = BasicClient.AuthType + " " + Convert.ToBase64String(bytes);

            return new Authorization(responseHeader, true);
        }