Conflux v2.0.1-testnet

Improvements

RPC Deprecation Announcement

• cfx_getLogs and eth_getLogs will no longer support the parameters limit and offset starting from v2.0.3. They are not efficient and can be replaced by setting the block/epoch range instead.

RPC Improvements

• Report error in cfx_getLogs and eth_getLogs if get_logs_filter_max_limit is configured but the query would return more logs. The previous behavior of cfx_getLogs was to silently truncate the result. The previous behavior of eth_getLogs was to raise an error when filter.limit is too low, regardless of how many logs the query would result in.
• eth_gasPrice now estimate gas prices accurately instead of returning a fixed value.
• Support phantom transactions and return correct fields in eSpace trace RPCs.
• Add fields valid and createType for eSpace trace RPCs.
• Add RPC rpc_methods to return all available methods and rpc_modules to return all RPC modules.
• Add totalEspaceTokens in the response of cfx_getSupplyInfo.
• Add local RPCs pos_start_voting, pos_stop_voting, and pos_voting_status. Check #2438 for details.
• Accept requests with zero as sender in eth_call.
• Accept unknown fields in eth_call.

Configuration Improvements

• Allow PoS voting nodes to have running backups. #2438 includes an introduction.
• Add config parameter get_logs_filter_max_block_number_range for limiting the maximum gap between from_block and to_block during Core space log filtering (cfx_getLogs). Note: eSpace blocks correspond to epochs in Core space, so the range in eth_getLogs can be limited using get_logs_filter_max_epoch_range.
• Add config parameter min_phase_change_normal_peer_count to set the number of normal-phase peers needed for phase change. The default value is set to 3 to make it more robust.
• Add environment variable CFX_POS_KEY_ENCRYPTION_PASSWORD to configure pos key encryption password.
• Set a proper max open files with ulimit in the default Linux/macOS start bash script.

Transaction Pool Improvements

• Allow pending transactions to be replaced unconditionally after 200000 epochs.

Bug Fixes

• Fix an issue that phantom transactions may have the same hash. Now all phantom transactions have different hashes after this fix.
• Create PoS log file directory if it does not exist.
• Fix a panic issue when the node is started with stdout unavailable.
• Fix an issue that an old transaction is not replaced according to a higher epoch_height.

Conflux v2.0.0-fix

This release fixes the issues during the hardfork by discarding the deprecated forks generated by not upgraded miners.
The PoS register end block number is delayed to 92751800 and the PoS chain launching epoch number is delayed to 37400000.

Conflux v2.0.0 (Hydra)

To node operators and miners:

Please upgrade your node before Epoch Number reaches 36935000 or Block Number reaches 92060600 (around 12:00 Feb.23rd, 2022(GMT+8)).

Please add pos_config (will be updated here after Feb.25th at 12:00) before Epoch Number reaches 37230000 (around Feb.28th 12:00).

If the binary cannot start, you can choose to compile the binary on your own platform or use the compatible version. Note that the compatible version has poorer performance and requires better hardware to run stably(possibly >4 cores).

The first time a v2.0 node starts, it will generate a PoS private key (stored in pos_config/key) and a password is required to encrypt it. The password is needed each time the node restarts. If the node will be registered as a PoS voter, please make sure the key file and the password are not leaked or deleted/forgotten.

Spec Incompatible Changes

• CIP-43：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-43.md
• CIP-64：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-64.md
• CIP-71：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-71.md
• CIP-76：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-76.md
• CIP-78：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-78.md
• CIP-86：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-86.md
• CIP-90：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-90.md
• CIP-92：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-92.md

RPC Improvements

Check this hardfork document for details: https://developer.confluxnetwork.org/v2-hardfork/hydra_overview/#rpc-changes

PoS RPC

Added a new group of PoS-related methods with a prefix of pos. Current information about the PoS chain can be acquired using these methods.

PoW RPC

Hardfork PoW RPC Changes

• Added a new field in the block structure and pubsub header structure:
  • posReference： the hash of the PoS latest block at the time when the PoW block is mined
• cfx_getStatus response have two more fields: latestFinalized and ethereumSpaceChainId

Incompatible Trace Changes

• Refactor the design and implementation of transaction traces. trace RPCs will be affected. RPC server runnings need to resync all trace data to support trace RPCs correctly. Check Conflux-Chain/CIPs#88 for details.

New Tag

• Added a new epochNumber tag:
  • latestFinalized：the latest finalized block

New RPCs

• Added three new RPC methods:
  • cfx_openedMethodGroups
  • cfx_getPoSRewardByEpoch
  • cfx_posEconomics:
    • view the current overall economics information of PoS
• txpool-related RPC
  • Added a new group of txpool-related RPC methods with a prefix of txpool which can be used to view various kinds of information regarding the current transaction pool.

eth RPC

Introduce Ethereum-comptible eth RPCs after CIP-90. Refer to this link for a list of implemented methods: https://developer.confluxnetwork.org/conflux-doc/docs/EVM-Space/evm_space_rpc_compatibility

Configuration Improvements

• Remove default dev mode ports. The users should configure open ports if they want to access RPCs.
• Add configuration jsonrpc_http_eth_port and jsonrpc_ws_eth_port to set eth-space RPC endpoint ports.

Transaction Pool Improvements

• Implement transaction pool garbage collection based on strict priorities (including transaction readiness, gas price, e.t.c.).
• Sample a subset of transactions with higher gas prices for packing. This reduces the packing time for high-price transactions.
• Reject invalid recipient in tx pool.

Bug Fixes

• Fixed a bug that may slow down the syncing process for archive nodes.
• Fix an issue that if the node is serving multiple state-related RPCs concurrently, some states may fail to be opened.
• Fix a possible OOM issue during node restarting.
• Fix blocked catching up issues of a heavy fork subtree.

Conflux v2.0.0-4-testnet

Improvements

• Support "phantom" eSpace transactions. (https://developer.confluxnetwork.org/conflux-doc/docs/EVM-Space/evm_space_vm_compatibility/#phantom-transactions)
• Support more eth space RPCs.

Bug Fixes

• Fix eth space RPC issues.
• Fix cfx space RPCs affected by introducing eSpace transactions.

Conflux v2.0.0-3-testnet

Incompatible Changes

• Introduce a new space that is fully EVM compatible. (CIP-90：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-90.md)
• Enable Blake2F builtin function. (CIP-92: Conflux-Chain/CIPs#92)
  • CIP-90 and CIP-92 will be enabled on Conflux Testnet at epoch number 61465000 and block number 77340000.

Configuration Changes

• Add configuration jsonrpc_http_eth_port and jsonrpc_ws_eth_port to set eth-space RPC endpoint ports.

Conflux v2.0.0-2-testnet

Incompatible Changes

• RPC Changes

  • Refactor the design and implementation of transaction trace. trace RPCs will be affected. Check Conflux-Chain/CIPs#88 for details. (#2286, #2292)

• Configuration Changes

  • Remove default dev mode ports. The users should configure open ports if they want to access RPCs. (#2328)

Improvements

• Implement transaction pool garbage collection based on strict priorities (including transaction readiness, gas price, e.t.c.). (#2287, #2291)
• Sample a subset of transactions with higher gas prices for packing. This reduces the packing time for high-price transactions. (#2312)
• Reject invalid receipient in txpool. (#2289)

Bug fixes

• Fix an issue that may cause the transaction pool to stop garbage collecting and always remains full. (#2357)
• Fix an issue that if the node is serving multiple state-related RPCs concurrently, some states may fail to be opened. (#2293)
• Fix a possible OOM issue during node restarting. (#2267)
• Fix blocked catching up issues of a heavy fork subtree. (#2280)

Conflux v2.0.0-testnet

To node operators and miners:

Please upgrade your node before Epoch Number reaches 55095000 or Block Number reaches 68845000 (around 10:00 Dec.9th, 2021(GMT+8)).

Please add pos_config (will be updated here after Dec.11 at 18:00) before Epoch Number reaches 55665000 (around Dec.13th 15:00).

If the binary cannot start, you can choose to compile the binary on your own platform or use the compatible version. Note that the compatible version has poorer performance and requires better hardware to run stably(>4 cores).

Incompatible Changes

• CIP-43：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-43.md
• CIP-64：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-64.md
• CIP-71：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-71.md
• CIP-72：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-72.md
• CIP-76：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-76.md
• CIP-78：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-78.md
• CIP-86：https://github.com/Conflux-Chain/CIPs/blob/master/CIPs/cip-86.md

RPC Improvements

PoS RPC

Added a new group of PoS-related methods with a prefix of pos. Current information about the PoS chain can be acquired using these methods.

PoW RPC

Hardfork PoW RPC Changes

• Added a new field in the block structure:
  • posBlockHash： the hash of the PoS latest block at the time when the PoW block is mined

New Tag

• Added a new epochNumber tag:
  • latestFinalized：the latest finalized block

New RPC

• Added a new RPC method to view the current overall economics information of PoS:
  • cfx_posEconomics
• txpool-related RPC
  • Added a new group of txpool-related RPC methods with a prefix of txpool which can be used to view various kinds of information regarding the current transaction pool.

Bug Fixes

Fixed a bug that may slow down the syncing process for archive nodes.

Conflux v1.1.7

Improvements

• Optimize the transaction pool to avoid rejecting high gas price transactions.
• Change cfx_getStorageAt's second parameter type from H256 to U256.
• Add a RPC cfx_openedMethodGroups to return opened RPC groups.
• Optimize cfx_gasPrice logic.
• Optimize transaction execution performance by avoiding unnecessary data copy.

Bug Fixes

• Fix missing log issue when doing log filtering with block ranges.

Conflux v1.1.6-fix2

Bug Fix

• Fix an issue that unpacked_transaction_count in the transaction pool may underflow after the node rejects a new transaction because of a low gas price.

Conflux v1.1.6-testnet

Improvements

• Optimize transaction pool to avoid replacing a transaction with a lower gas-price one after garbage collection.
• Improve transaction execution performance when a non-existent account is accessed.
• Improve txpool garbage collection behavior.
• Add txpool RPC group for querying transaction-pool-related information.
• Enable block number index by default.

Bug fixes

• Fix an issue that may cause the node to stop receiving network messages.
• Fix an issue that may prevent archive nodes to sync (#2249).
• Fix an issue that an archive may crash after several quick restarts (#2244).
• Fix duplicate log result for duplicate blockhash parameter (#2238).
• Fix an issue that block number index may be incorrect after pivot switch (#2236).