Discarding Data

Data can be thrown away by not making a call to mem.write:

function discarddata(rec, chnl, tag)
-- do nothing
end

x.chnl[2].src.onrecord = discarddata

Here, data arriving at channel 2’s source will just be thrown away.

Of course, you could selectively throw the data away depending on the content of the record.
In that case you can use the Lua string functions to determine which action to take – do nothing or make a call to mem.write.