The KVPoll states of one transfer
Four states in a row: Bootstrapping 1, WaitingForInput 2, Transferring 3, and Success 4. Each moves to the next. Below them, Failed 0 can be reached from bootstrapping, waiting, and transferring.
ONE REQUEST, ONE TRANSFER
Bootstrapping
KVPoll 1
WaitingForInput
KVPoll 2
Transferring
KVPoll 3
Success
KVPoll 4
Failed
KVPoll 0