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CC-Tweaked/doc/events/rednet_message.md
Jonathan Coates 52b78f92cd
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module: [kind=event] rednet_message see: modem_message For raw modem messages sent outside of Rednet. see: rednet.receive To wait for a Rednet message with an optional timeout and protocol filter.

The [rednet_message] event is fired when a message is sent over Rednet.

This event is usually handled by [rednet.receive], but it can also be pulled manually.

[rednet_message] events are sent by [rednet.run] in the top-level coroutine in response to [modem_message] events. A [rednet_message] event is always preceded by a [modem_message] event. They are generated inside CraftOS rather than being sent by the ComputerCraft machine.

Return Values

  1. [string]: The event name.
  2. [number]: The ID of the sending computer.
  3. [any]: The message sent.
  4. [string]|[nil]: The protocol of the message, if provided.

Example

Prints a message when one is sent:

while true do
  local event, sender, message, protocol = os.pullEvent("rednet_message")
  if protocol ~= nil then
    print("Received message from " .. sender .. " with protocol " .. protocol .. " and message " .. tostring(message))
  else
    print("Received message from " .. sender .. " with message " .. tostring(message))
  end
end