Log4net outputting random method names after applciation is obfuscated via .net -reactor

Question

I have obfuscated my application using .net reactor. Application is working fine other then on some places method names in log file created through log4net is coming as random string. Strange thing is within same method different logs are coming with different behavior. Some coming with actual method name while other with random method name. e.g,

My log4net appender is

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender" >
    <file value="..\\Logs\\MyApp_N1" />
    <encoding value="utf-8" />
    <appendToFile value="true" />
    <datePattern value="_yyyyMMdd'.log'" />
    <staticLogFileName value="false" />
    <rollingStyle value="Composite"/>
    <maxSizeRollBackups value="-1"/>
    <maximumFileSize value="10MB"/>
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <filter type="log4net.Filter.LevelRangeFilter">
      <acceptOnMatch value="true" />
      <levelMin value="DEBUG" />
      <levelMax value="FATAL" />
    </filter>
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%d{yyyy-MM-dd HH:mm:ss.fff}&#9;%p&#9;MyApp&#9;N1&#9;%t&#9;%c{1}.%M&#9;%property{SessionId}&#9;%m%n" />
    </layout>
  </appender>

log4net version 2.0.8 .net reactor version 5.0

Sample Log Messages are

2017-12-08 15:17:33.722 DEBUG TWS N1 13 MyclassName.SendMessage My method start

2017-12-08 15:17:33.840 DEBUG TWS N1 13 MyclassName.urT1VHsGarQ1gTcc8O Message request add in db id =166364

2017-12-08 15:17:33.852 DEBUG TWS N1 13 MyclassName.SendMessage Message Services - Send End

Seems as expected. All non-public method names were obfuscated, all public method names are not touched. — Evk, Dec 08 '17 at 11:09
@Evk Within same method there are 3 lines of logs. Two are coming with actual method name while one is coming with random method name. Isn't this looks like a inconsistent behavior. — Kamran Shahid, Dec 08 '17 at 13:54
See Blair comments on this answer in https://stackoverflow.com/questions/71195/should-you-obfuscate-a-commercial-net-application — rodrigogq, Dec 08 '17 at 14:38
Is method in question uses async await or yield return statement? Is it public? — Evk, Dec 08 '17 at 15:19

score 0 · Answer 1 · answered Nov 12 '20 at 16:20

0

If the method 'urT1VHsGarQ1gTcc8O' is not a public one then this is the expected output.

To obfuscate all public classes and methods as well you need to set "2. Protection Settings"->"Obfuscation"->"Obfuscate Public Types" to "True".

answered Nov 12 '20 at 16:20

Eziriz

331
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Log4net outputting random method names after applciation is obfuscated via .net -reactor

1 Answers1