Dev network show mistake sync status

[yanguoyu]

When starting a dev blockchain with Neuron, the sync status always shows not start sync yet. This reason is caused by https://github.com/nervosnetwork/ckb/tree/develop/rpc#net-sync_state always returns

{
  "jsonrpc":"2.0",
  "result":{"best_known_block_number":"0x0","best_known_block_timestamp":"0x0","fast_time":"0x3e8","ibd":false,"inflight_blocks_count":"0x0","low_time":"0x5dc","normal_time":"0x4e2","orphan_blocks_count":"0x0"},
  "id":42
}

Because the calculated sync status needs best_known_block_number which always keeps 0x0, the sync status always shows not start yet

[Danie0918]

@devchenyan Any update?

[devchenyan]

ckb issue： nervosnetwork/ckb#4472

[devchenyan]

nervosnetwork/neuron#3183