Microsoft.Identity.Client.AuthenticationParameters.CreateFromResponseAuthenticateHeader C# (CSharp) Method

        public static AuthenticationParameters CreateFromResponseAuthenticateHeader(string authenticateHeader)
        {
            if (string.IsNullOrWhiteSpace(authenticateHeader))
            {
                throw new ArgumentNullException("authenticateHeader");
            }

            authenticateHeader = authenticateHeader.Trim();

            // This also checks for cases like "BearerXXXX authorization_uri=...." and "Bearer" and "Bearer "
            if (!authenticateHeader.StartsWith(Bearer, StringComparison.OrdinalIgnoreCase)
                || authenticateHeader.Length < Bearer.Length + 2
                || !char.IsWhiteSpace(authenticateHeader[Bearer.Length]))
            {
                var ex = new ArgumentException(MsalErrorMessage.InvalidAuthenticateHeaderFormat, "authenticateHeader");
                PlatformPlugin.Logger.Error(null, ex);
                throw ex;
            }

            authenticateHeader = authenticateHeader.Substring(Bearer.Length).Trim();

            Dictionary<string, string> authenticateHeaderItems = EncodingHelper.ParseKeyValueList(authenticateHeader, ',', false, null);

            var authParams = new AuthenticationParameters();
            string param;
            authenticateHeaderItems.TryGetValue(AuthorityKey, out param);
            authParams.Authority = param;
            authenticateHeaderItems.TryGetValue(ResourceKey, out param);
            authParams.Resource = param;

            return authParams;
        }