Publishing (of simple string) stops after ~30seconds of frequent publishing about rosintegration HOT 3 OPEN

Assuming the time is random like you said this sounds like a garbage collector issue. It's on the UE4 side of things, I believe what happens is that UE4 thinks you are no longer using the pointer so it tries to delete it. For a quick test to see if that is the problem adjust the time like in the image attached.
(To get there, go to edit->project settings then engine->garbage collection change the piece that's circled to something way less and see what that does. Then change it to something way longer and see what that does.

If that solves the problem what you need to do is something like this:

  // These need to be property'd so that they don't get garbage collected
  // https://github.com/code-iai/ROSIntegration/issues/32
  UPROPERTY()
  UTopic* topic_;

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I found this issue after experiencing the same symptoms. Somewhere between 10-30s of time running Unreal, I would get an access violation in Topic.h. Adding UPROPERTY() to my member declaration of UTopic seemed to fix it.

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@p-buddy Any news? Would be great to close this if that was the problem.

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