What do you mean by "router in between"? Do you mean they are both connected to the same router, or each connected to its own router?
Like this?
Arduino -- router -- PC
Or this?
Arduino -- router -- internet -- router -- PC
What do you mean by "router in between"? Do you mean they are both connected to the same router, or each connected to its own router?
Like this?
Arduino -- router -- PC
Or this?
Arduino -- router -- internet -- router -- PC