Connecting to backup source multithreading

[Alessandro Carioni]

What does the method switchToAlternateConnection do exactly?
Does it call a blocking operation such as wait() or similar commands?

Indeed you don’t need to block a thread in order to wait for the connected status. You can simply create a new client (or reuse the old one) and register a ClientListener.

For example:

void onStatusChange(String status) {
  switch (status) {
  case "DISCONNECTED":
    var newClient = new LightstreamerClient(...)
    newClient.addListener(
      void onStatusChange(status) {
        switch (status) {
        case "CONNECTED:WS-STREAMING":
          // complete the configuration
        }
      })
    newClient.connect()
  }
}

Since the methods of LightstreamerClient are asynchronous and reentrant, they work as expected.