BonCodeAJP13.BonCodeAJP13ServerConnection.CheckMutex C# (CSharp) Method

        private void CheckMutex()
        {
            if (BonCodeAJP13Settings.BONCODEAJP13_LOG_LEVEL > BonCodeAJP13LogLevels.BONCODEAJP13_NO_LOG)
            {
                bool initLogger = true;
                string errMsg = "";
                //if we have a log filter we need to satisfy it first, in that case only log when we have a match pattern
                if (BonCodeAJP13Settings.BONCODEAJP13_LOG_IPFILTER.Length > 0 && p_ClientIp.Length > 0)
                {
                    try
                    {
                        //test whether part or parts of clientIp match the filter condition. If we have no match, we need to skip logging.
                        MatchCollection matches = Regex.Matches(p_ClientIp, BonCodeAJP13Settings.BONCODEAJP13_LOG_IPFILTER, RegexOptions.IgnorePatternWhitespace);
                        if (matches.Count == 0)
                        {
                            initLogger = false;
                        }
                    }
                    catch (Exception e)
                    {
                        //for any exception we will initialize logging anyway because of the initLogger flag
                        errMsg = "Your regular expression provided in setting LogIPFilter raised exception:" + e.Message;
                    }
                }

                if (initLogger)
                {
                    //default log file name is BonCodeAJP13ConnectionLog.txt in directory of DLL or Windows
                    p_Logger = new BonCodeAJP13Logger(BonCodeAJP13Settings.BONCODEAJP13_LOG_FILE + p_LogFilePostFix + DateTime.Now.ToString("yyyyMMdd") + ".log", p_ConnectionMutex);
                    //if RegEx contained error message we will also write an error msg
                    if (errMsg.Length > 0)
                    {
                        p_Logger.LogMessage(errMsg);
                    }
                }
            }
        }