connect method

@override Future<void> connect(TransportConfig config)

Opens the socket and transitions through TransportConnectionStates.

Implementations MUST:

• Be safe to call multiple times (re-invocation after a disconnect should re-open; re-invocation on an open transport is a no-op).
• Start emitting TransportConnectionState updates via connectionState immediately.
• NOT throw; errors flow through the connectionState stream as TransportDisconnected with an informative reason.

Implementation

@override
Future<void> connect(TransportConfig config) async {
  recorded.socketParams.add(Map.of(config.params));
  _stateController.add(const TransportConnecting());
  await Future<void>.delayed(Duration.zero);
  _stateController.add(const TransportConnected());
}