Say I have 12 connections (8 in, 4 out) and I have to reboot my PC due to a kernel update or whatever.
If I close down my node at the exact time someone is using it for a 255kb BTC transaction then will their Tx just be rerouted through another node? Is their Tx interrupted or lost?
Does bitcoin-QT or bitcoind temporarily halt system shutdown while it clears any current TX's?
Just curious, really.
The node initialing the tx should be connecting to 8+ other nodes, and so it shouldn't be a problem even if a few of them shut down at the "worst timing".
Yeah, it's basically like a huge expanding net, all connected to each other. If one fails, no problem, others have your tx, since your tx has already spread through the network.