This sends out an LAN broadcast request for Blue servers on the specified port.

It takes two parameters:

  1. The port to search on (1-65535). This must match the server hosting main port (not WebSocket).
  2. The timeout, in milliseconds. A timeout of 5 seconds (5000) is recommended.


LAN servers are Blue Servers hosting on the same LAN; read more under Guides > Hosting a server. Broadcasts are usually unblocked for personal computers and basic LAN configuration. However, it can be blocked by firewalls, router configuration, etc.

Currently only IPv4 broadcasts are done, as IPv6 scans require a lot more code, including loops on network interfaces, and one port per interface.


If a Blue server replies, a Network scan > On LAN server scan reply condition will be triggered, with the LAN expressions set as related.

After the timeout given, the client will no longer be listening for replies, and will trigger Network scan > On LAN server scan end, whether it has found any LAN servers or not. If you abort the scan mid-way, e.g. by Connect action, the end event may or may not trigger.


You cannot start a server scan while connected or connecting to a server. Attempting will result in an error and the scan not starting.

Similarly, you cannot start a scan while one is already in progress, whether the port is the same or different to on-going scan.

Only one broadcast message is sent from this action; you can run the action more than once (after each scan timeout ends), but it is unlikely to reach any servers it hasn't already.