Amazon.Runtime.RetryPolicy.TryParseExceptionMessage C# (CSharp) Method

        private static bool TryParseExceptionMessage(AmazonServiceException ase, out DateTime serverTime)
        {
            if (ase != null && !string.IsNullOrEmpty(ase.Message))
            {
                var message = ase.Message;

                // parse server time from exception message, if possible
                var parenIndex = message.IndexOf(clockSkewMessageParen, StringComparison.Ordinal);
                if (parenIndex >= 0)
                {
                    parenIndex++;

                    // Locate " + " or " - " separator that follows the server time string
                    var separatorIndex = message.IndexOf(clockSkewMessagePlusSeparator, parenIndex, StringComparison.Ordinal);
                    if (separatorIndex < 0)
                        separatorIndex = message.IndexOf(clockSkewMessageMinusSeparator, parenIndex, StringComparison.Ordinal);

                    // Get the server time string and parse it
                    if (separatorIndex > parenIndex)
                    {
                        var timestamp = message.Substring(parenIndex, separatorIndex - parenIndex);
                        if (DateTime.TryParseExact(
                                timestamp,
                                AWSSDKUtils.ISO8601BasicDateTimeFormat,
                                CultureInfo.InvariantCulture,
                                DateTimeStyles.AssumeUniversal,
                                out serverTime))
                        {
                            return true;
                        }
                    }
                }
            }

            serverTime = DateTime.MinValue;
            return false;
        }
        private static IWebResponseData GetWebData(AmazonServiceException ase)