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CC-Tweaked/doc/events/rednet_message.md
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License CC:T according to the REUSE specification (#1351) 
This adds SPDX license headers to all source code files, following the
REUSE[1] specification. This does not include any asset files (such as
generated JSON files, or textures). While REUSE does support doing so
with ".license" files, for now we define these licences using the
.reuse/dep5 file.

[1]: https://reuse.software/
2023-03-15 21:52:13 +00:00

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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