The user=<gonenow>, etc etc case can probably be got around with a couple of minor changes to the code. The user=gonenow sent=34 recv=34 is more of a problem as it fails the premise on which the split approach was based. I'd probably wrap the original code in an if condition and deal with the non-comma-separated lines in an else clause.
It just so happens that I am about to go on holiday so I will not be able to provide further help for a week or so. I suggest you create another question in SoPW, linking to this thread, and post some example data lines illustrating your problem so that others can perhaps help you build on the solution you have so far.
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