in fastpay/src/network.rs [291:300]
fn handle_transfer_order(
&mut self,
order: TransferOrder,
) -> AsyncResult<AccountInfoResponse, FastPayError> {
Box::pin(async move {
let shard = AuthorityState::get_shard(self.num_shards, &order.transfer.sender);
self.send_recv_bytes(shard, serialize_transfer_order(&order))
.await
})
}