receive()

Receives a datagram from the UDP socket. If the UDP socket is connected, only datagrams coming from the peer are accepted. Otherwise, the returned datagram can come from any host. If there are more than size bytes available in the datagram, the excess bytes are discarded. If there are less then size bytes available in the current datagram, the available bytes are returned.

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Parameter	Type	Required	Description
handle	int	+	Connection handle
size	int	–	Maximum size of the datagram to be retrieved. If omitted, the maximum datagram size is used (which is currently limited by the implementation to 8192 bytes).

Edit

Type	Description
string	Received datagram

Edit

				
					local params = ...

local network = require("network")
if params.event == "network" and params.data.event_type == "io_activity" then
    if params.data.event.io_activity_type == "IN" then
        print("Message: " .. network.receive(params.data.event.handle))
    end
    return
end