ournode's People
ournode's Issues
Keep blockchain updater from starving
One fiber downloads the list of blocks with getblocks
- inv
messages.
Sometimes it stops for some reason. Maybe the peer stops responding.
As a consequence, the fibers downloading the missing blocks stop.
Answer getaddr, getheaders, getblocks, getdata
Behave like a decent full node and provide the data.
Check tx input vs output amounts
Verify that total output amounts <= total input amounts
Keep better list of peers
Discarding unresponsive peers
Prioritize most responsive ones
Check TX script
Ok this is a big one, let's break this down into:
- Being able to identify and check a P2PK script
- Being able to identify and check a P2PKH script
- Being able to identify and check a P2PSH script
- Being able to identify and check a P2WPKH script
- Being able to identify and check a P2WSH script
- Being able to check any signature type
Check coinbase tx reward
Check total fees and reward against halvings
Organize a log scheme
At least have
- timestamps
- severity (debug/info/warning/error/fatal/config)
Check block hash agains difficulty
Verify block hash is below difficulty
Write blockchain to disk
- Separate folders for mainnet/testnet3/etc
- Keep files below 4GiB
- Keep full blocks, can be serialized network-like
- Index blocks by hashes
- Index blocks by height
Reorder chains to prioritize longest chain
In case of fork, make the "most work" chain the root chain.
Reflect changes onto persistent memory.
Network traffic statistics
Keep and show, per peer and total:
- total bytes sent and rcvd
- current bytes/bits per second
Check difficulty changes
Verify changes in difficulty match the consensus algorithm
Conf/cmd line options
Some restrictions seem arbitrary and could be disabled while still having a compatible full node:
- Enable minimum fee
- Restrict TX's output to standard forms
Command line option to choose network
Choose config file according to the folder chosen
Select genesis TX accordingly
Choose algorithms specific to the chain (notably difficulty)
Add an rpc interface
Let the node manager request data locally like blocks, TXs, UTXOs, mempool...
Check TX's nLockTime
Support SPV filtering
Answer filterload, filteradd, filterclear, merkleblock messages.
Calculate the UTXO set
Keep it in persistent memory and index it by TXID.
mempool
Keep and index unconfirmed TXs received from peers.
Check TXs
In blocks and mempool:
- minimum fee
- inputs are unspent
Enable pruning
- Blocks
- spend TXOs
- UTXO set
- mempool (not keeping one)
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