fix: swap to isConnected(..) since we want to read and write data
fix: swap to isConnected(..) since we want to read and write data

- we used isConnectedOrConnecting(..) but the docs recommends to use isConnected(..):
  "...This is good for applications that need to do anything related to the network other
  than read or write data. For the latter, call isConnected() instead, which guarantees that
  the network is fully usable."

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