Monitor arbitrary TCP port

I had DIY'd a scripted Groovy datasource ages. Not sure if this was exactly what PortMulti- did, but the results should be similar. 

(host, port) = "##WILDVALUE##".split(':')
try {
    s = new Socket(host, port.toInteger())
    s.close()
    return 0
} catch (ConnectException ce) {
    println ce.toString()
    return 1
} catch (BindException be) {
    println be.toString()
    return 4
} catch (NoRouteToHostException re) {
    println re.toString()
    return 2
} catch (PortUnreachableException pe) {
    println pe.toString()
    return 3
} catch (Exception e) {
    println e.toString()
    return 5
}

You would just then setup a datapoint to capture the exitCode and alert if it was > 0.