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DebugInstructions.md

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Debugging the native libraries in Android Studio with LLDB

  1. Make sure the native libraries have been built with debug symbols. If using the build-apk.sh script, run SKIP_STRIPPING=yes ../build-apk.sh --dev-build.
  2. In Android Studio, go to Run -> Edit configurations...
  3. Make sure the app configuration is selected.
  4. In the Debugger tab, select Dual (Java + Native)
  5. Start debugging the app as usual from Android Studio. The app should now stop on a SIGURG signal.
  6. Select the LLDB tab in the debugger. Now you can set breakpoints etc, e.g. breakpoint set -n open_tun
  7. Before continuing run pro hand -p true -s false SIGURG
  8. Click Resume Program and the app will resume until the breakpoint is hit.

NOTE: When running LLDB, Android Studio can sometimes get into a state where it will try to connect to the debugger when running the app normally, which blocks the app from starting. To fix this run adb shell am clear-debug-app.