Collector Debug - TCP/Telnet command

Since we're posting !groovy workarounds---here is one I'm using for telnet: 

hostname = 'internal.server.local'
port = 22
try {
    s = new Socket(hostname, port)
    println "Connected to $hostname on port $port"
    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)
}