Set Telnet Server nonblocking = false

Hey all,
I'm writing a telnet server. I think it should be obvious what it does. But, my clients keep getting disconnected whenever I use IO.getc because it is nonblocking and it's throwing an error.

How can I set my telnet server to have nonblocking=false?

my code is here: http://pastie.caboo.se/82613

Thanks
aRi
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There are errors galore, and I would greatly appreciate it if you ever wanted to criticize me to death.