[Native][C++] How to log WebRTC related stuff in file.

[rudresh pandey]

Hi,

While going through the Peerconnection_client sample on windows, I see that log are being displayed in debugger console that are generated by WebRTC Libs.

Also in some member function they are putting it explicitly like LOG(INFO) << __FUNCTION__;

I want these thing to be written on a file. What I need to do?

Please suggest.

Thanks

R.

[Francois Temasys]

Great question. I'm also interested by the answer.

[Jozsef Vass]

Try including talk/base/logging.h and use LogMessage::ConfigureLogging() method.

Jozsef

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[grgk...@gmail.com]

Hi Rudresh,

I normally add the following to the main.cc in the beginning of the function wWinMain:

bool debug = true;

   std::string log = "verbose";

   if (debug) {

       talk_base::LogMessage::LogToDebug(talk_base::LS_VERBOSE);

   }

   if (!log.empty()) {

       talk_base::FileStream *fs = new talk_base::FileStream();

       if (!fs->Open("peerconnectionclient.log", "w", NULL)) {

           LOG(INFO) << "Could not open file";

       } else {

           talk_base::LogMessage::LogToStream(fs, talk_base::LS_VERBOSE);

       }

   }

The logs will end up in trunk/talk. It is not perfect, but it works for me.

Thanks.

George

[Francois Temasys]

Thanks for the sharing George!

[Francois Temasys]

In your case, if you are building with gyp/ninja it may be more interesting to use:

#ifdef _DEBUG

talk_base::LogMessage::LogToDebug(talk_base::LS_VERBOSE);

talk_base::FileStream *fs = new talk_base::FileStream();

if (!fs->Open("peerconnectionclient.log", "w", NULL))

  LOG(INFO) << "Could not open file";

else

  talk_base::LogMessage::LogToStream(fs, talk_base::LS_VERBOSE);

#endif

As _DEBUG is defined in the gyp configuration.

Cheers

[devel...@gmail.com]

Hi,

I'm trying to disable logs, and it doesn't seem to work:

rtc::LogMessage::LogToDebug(rtc::LS_NONE);
rtc::LogMessage::SetLogToStderr(false);

So, probably, something hase changed in the logging system.