ASPC.Marvel.CrimeAPI.TokenHelper.GetAppOnlyAccessToken C# (CSharp) Метод

        public static OAuth2AccessTokenResponse GetAppOnlyAccessToken(
            string targetPrincipalName,
            string targetHost,
            string targetRealm)
        {
            if (targetRealm == null)
            {
                targetRealm = Realm;
            }

            string resource = GetFormattedPrincipal(targetPrincipalName, targetHost, targetRealm);
            string clientId = GetFormattedPrincipal(ClientId, HostedAppHostName, targetRealm);

            OAuth2AccessTokenRequest oauth2Request = OAuth2MessageFactory.CreateAccessTokenRequestWithClientCredentials(clientId, ClientSecret, resource);
            oauth2Request.Resource = resource;

            // Get token
            OAuth2S2SClient client = new OAuth2S2SClient();

            OAuth2AccessTokenResponse oauth2Response;
            try
            {
                oauth2Response =
                    client.Issue(AcsMetadataParser.GetStsUrl(targetRealm), oauth2Request) as OAuth2AccessTokenResponse;
            }
            catch (WebException wex)
            {
                using (StreamReader sr = new StreamReader(wex.Response.GetResponseStream()))
                {
                    string responseText = sr.ReadToEnd();
                    throw new WebException(wex.Message + " - " + responseText, wex);
                }
            }

            return oauth2Response;
        }