Changes to sync protocol. The RPC27 spits out a bunch of silly status
goo whenever it goes inactive for more than a couple of minutes. Also, require that we sync up so that we know for sure that the power control failed. Previously, I was blindly spitting out the command without being sure we had a command prompt. Note, that we still have a problem with an active tip session messing up power control since only one connection can be active at a time. At present, there is no positive way to know that the connection was refused since capture accepts the connection and then closes it if there is an active tip session. I need to change the little handshake so that there is a response Yes/Know response to the secret key exchange.
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