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CHANGELOG

Unreleased (I think)

  • #128 feat(p2p): render HasChannel(chID) is a public p2p.Peer method (#3510)
  • #126 Remove p2p allocations for wrapping outbound packets
  • #125 Fix marshalling and concurrency overhead within broadcast routines
  • perf(p2p): Only update send monitor once per batch packet msg send (#3382)
  • #124 Secret connection read buffer
  • #123 perf(p2p/conn): Remove unneeded global pool buffers in secret connection #3403
  • perf(p2p): Delete expensive debug log already slated for deletion #3412
  • perf(p2p): Reduce the p2p metrics overhead. #3411
  • commit f663bd35153b0b366c1e1e6b41e7f2dcff7963fd : one more debug log deletion
  • #120 perf(consensus): Use TrySend for hasVote/HasBlockPart messages #3407

v0.37.4-v25-osmo-11

  • #117 fix(mempool)!: stop accepting TXs in the mempool if we can't keep up
  • #118 perf: bring back stop recheck

v0.37.4-v25-osmo-10

  • #115 perf(p2p/secretconn): Buffer secret connection writes (#3346)
  • #116 perf(blockstore)!: Cache more in blockstore, which speedsup the gossip routines (#3342)

v0.37.4-v25-osmo-9

  • #112 perf(mempool): Remove expensive debug logs + repeated hashing in mempool. Fix some v0.37.x line hard-to-reach race bugs. (Not in upstream)

v0.37.4-v25-osmo-8

  • #108 perf(consensus): Make some consensus reactor messages take RLock's not WLock's (#3211)
  • #108 perf(consensus): Make late votes outside of last block commits not get to peerMsgQueue (#3157)
  • #108 perf(consensus): Make reactor check for duplicate/old block parts (#3161)
  • #109 perf(p2p,mempool): Make mempool reactor receive not block. (Fixed by either #3209, #3230)

v0.37.4-v25-osmo-7

  • #83 perf(types): 3x speedup MakePartSet (#3117)
  • #85 perf(flowrate): Speedup flowrate.Clock (#3016)
  • #86 Comment out expensive debug logs
  • #91 perf(consensus): Minor improvement by making add vote only do one peer set mutex call, not 3 (#3156)
  • #93 perf(consensus): Make some consensus reactor messages take RLock's not WLock's (#3159)
  • #95 perf(types) Make a new method GetByAddressMut for ValSet, which does not copy the returned validator. (#3129)
  • #97 perf(p2p/connection): Lower wasted re-allocations in sendRoutine (#2986)
  • #99 perf(consensus): Reuse an internal buffer for block building (#3162)
  • #101 perf(consensus): Run broadcast routines out of process (speeds up consensus mutex) #3180
  • #102 perf(p2p): Remove broadcast return channel #3182
  • #105 perf(p2p)!: Remove PeerSendBytesTotal metric #3184

v0.37.4-v25-osmo-5

  • #73 perf(consensus/blockexec): Add simplistic block validation cache
  • #74 perf(consensus): Minor speedup to mark late vote metrics
  • #75 perf(p2p): 4% speedup to readMsg by removing one allocation
  • #76 perf(consensus): Add LRU caches for blockstore operations used in gossip
  • #77 perf(consensus): Make every gossip thread use its own randomness instance, reducing mutex contention

v0.37.4-v25-osmo-4

  • #69 perf: Make mempool update async from block.Commit (#3008)
  • #67 fix: TimeoutTicker returns wrong value/timeout pair when timeouts are…

v0.37.4-v25-osmo-3

  • #61 refactor(p2p/connection): Slight refactor to sendManyPackets that helps highlight performance improvements (backport #2953) (#2978)
  • #62 perf(consensus/blockstore): Remove validate basic call from LoadBlock
  • #71 perf(consensus): Make mempool update async from Commit

v0.37.4-v25-osmo-2 & v0.37.4-v24-osmo-5

  • #35 Handle last element in PickRandom
  • #38 Remove expensive Logger debug call in PublishEventTx
  • #39 Change finalizeCommit to use applyVerifiedBlock
  • #40 Speedup NewDelimitedWriter
  • #41 Remove unnecessary atomic read
  • #42 Remove a minint call that was appearing in write packet delays
  • #43 Speedup extended commit.BitArray()

v0.37.4-v24-osmo-4

  • #27 Lower allocation overhead of txIndex matchRange
  • #28 Significantly speedup bitArray.PickRandom
  • #29 Lower heap overhead of JSON encoding
  • #30 Cache the block hash

v0.37.4-v24-osmo-3

  • #21 Move websocket logs to Debug
  • #22 Fix txSearch pagination performance issues
  • #25 Optimize merkle tree hashing

v0.37.4-v24-osmo-2

  • #20 Fix the rollback command

v0.37.4-v24-osmo-1

  • #5 Batch verification
  • #11 Skip verification of commit sigs
  • #13 Avoid double-saving ABCI responses

v0.37.4-v23-osmo-3

  • #17 Set the max number of (concurrently) downloaded blocks to {peersCount * 20}
  • #18 Sort peers by download rate & multiple requests for closer blocks

v0.37.4-v23-osmo-2

  • #3 Avoid double-calling types.BlockFromProto
  • #4 Do not validatorBlock twice

v0.37.4-v23-osmo-1

v0.37.4

November 27, 2023

This release provides the nop mempool for applications that want to build their own mempool. Using this mempool effectively disables all mempool functionality in CometBFT, including transaction dissemination and the broadcast_tx_* endpoints.

Also fixes a small bug in the mempool for an experimental feature, and reverts the change from v0.37.3 that bumped the minimum Go version to v1.21.

BUG FIXES

  • [mempool] Avoid infinite wait in transaction sending routine when using experimental parameters to limiting transaction gossiping to peers (#1654)

FEATURES

  • [mempool] Add nop mempool (#1643)

    If you want to use it, change mempool's type to nop:

    [mempool]

# The type of mempool for this node to use.
#
# Possible types:
# - "flood" : concurrent linked list mempool with flooding gossip protocol
# (default)
# - "nop"   : nop-mempool (short for no operation; the ABCI app is responsible
# for storing, disseminating and proposing txs). "create_empty_blocks=false"
# is not supported.
type = "nop"

v0.37.3

November 17, 2023

This release contains, among other things, an opt-in, experimental feature to help reduce the bandwidth consumption associated with the mempool's transaction gossip.

BREAKING CHANGES

  • [p2p] Remove unused UPnP functionality (#1113)

BUG FIXES

  • [state/indexer] Respect both height params while querying for events (#1529)

FEATURES

  • [node/state] Add Go API to bootstrap block store and state store to a height (#1057) (@yihuang)
  • [metrics] Add metric for mempool size in bytes SizeBytes. (#1512)

IMPROVEMENTS

  • [crypto/sr25519] Upgrade to go-schnorrkel@v1.0.0 (#475)
  • [node] Make handshake cancelable (cometbft/cometbft#857)
  • [node] Close evidence.db OnStop (cometbft/cometbft#1210: @chillyvee)
  • [mempool] Add experimental feature to limit the number of persistent peers and non-persistent peers to which the node gossip transactions (only for "v0" mempool). (#1558) (#1584)
  • [config] Add mempool parameters experimental_max_gossip_connections_to_persistent_peers and experimental_max_gossip_connections_to_non_persistent_peers for limiting the number of peers to which the node gossip transactions. (#1558) (#1584)

v0.37.2

June 14, 2023

Provides several minor bug fixes, as well as fixes for several low-severity security issues.

BUG FIXES

  • [pubsub] Pubsub queries are now able to parse big integers (larger than int64). Very big floats are also properly parsed into very big integers instead of being truncated to int64. (#771)
  • [state/kvindex] Querying event attributes that are bigger than int64 is now enabled. We are not supporting reading floats from the db into the indexer nor parsing them into BigFloats to not introduce breaking changes in minor releases. (#771)

IMPROVEMENTS

  • [rpc] Remove response data from response failure logs in order to prevent large quantities of log data from being produced (#654)

SECURITY FIXES

  • [rpc/jsonrpc/client] Low severity - Prevent RPC client credentials from being inadvertently dumped to logs (#787)
  • [cmd/cometbft/commands/debug/kill] Low severity - Fix unsafe int cast in debug kill command (#793)
  • [consensus] Low severity - Avoid recursive call after rename to (*PeerState).MarshalJSON (#863)
  • [mempool/clist_mempool] Low severity - Prevent a transaction from appearing twice in the mempool (#890: @otrack)

v0.37.1

April 26, 2023

This release fixes several bugs, and has had to introduce one small Go API-breaking change in the crypto/merkle package in order to address what could be a security issue for some users who directly and explicitly make use of that code.

BREAKING CHANGES

  • [crypto/merkle] Do not allow verification of Merkle Proofs against empty trees (nil root). Proof.ComputeRootHash now panics when it encounters an error, but Proof.Verify does not panic (#558)

BUG FIXES

  • [consensus] Unexpected error conditions in ApplyBlock are non-recoverable, so ignoring the error and carrying on is a bug. We replaced a return that disregarded the error by a panic. (#496)
  • [consensus] Rename (*PeerState).ToJSON to MarshalJSON to fix a logging data race (#524)
  • [light] Fixed an edge case where a light client would panic when attempting to query a node that (1) has started from a non-zero height and (2) does not yet have any data. The light client will now, correctly, not panic and keep the node in its list of providers in the same way it would if it queried a node starting from height zero that does not yet have data (#575)

IMPROVEMENTS

  • [jsonrpc/client] Improve the error message for client errors stemming from bad HTTP responses. (cometbft/cometbft#638)

v0.37.0

March 6, 2023

This is the first CometBFT release with ABCI 1.0, which introduces the PrepareProposal and ProcessProposal methods, with the aim of expanding the range of use cases that application developers can address. This is the first change to ABCI towards ABCI++, and the full range of ABCI++ functionality will only become available in the next major release with ABCI 2.0. See the specification for more details.

In the v0.34.27 release, the CometBFT Go module is still github.com/tendermint/tendermint to facilitate ease of upgrading for users, but in this release we have changed this to github.com/cometbft/cometbft.

Please also see our upgrading guidelines for more details on upgrading from the v0.34 release series.

Also see our QA results for the v0.37 release.

We'd love your feedback on this release! Please reach out to us via one of our communication channels, such as GitHub Discussions, with any of your questions, comments and/or concerns.

See below for more details.

BREAKING CHANGES

  • The TMHOME environment variable was renamed to CMTHOME, and all environment variables starting with TM_ are instead prefixed with CMT_ (#211)
  • [p2p] Reactor Send, TrySend and Receive renamed to SendEnvelope, TrySendEnvelope and ReceiveEnvelope to allow metrics to be appended to messages and measure bytes sent/received. (#230)
  • Bump minimum Go version to 1.20 (#385)
  • [abci] Make length delimiter encoding consistent (uint64) between ABCI and P2P wire-level protocols (#5783)
  • [abci] Change the key and value fields from []byte to string in the EventAttribute type. (#6403)
  • [abci/counter] Delete counter example app (#6684)
  • [abci] Renamed EvidenceType to MisbehaviorType and Evidence to Misbehavior as a more accurate label of their contents. (#8216)
  • [abci] Added cli commands for PrepareProposal and ProcessProposal. (#8656)
  • [abci] Added cli commands for PrepareProposal and ProcessProposal. (#8901)
  • [abci] Renamed LastCommitInfo to CommitInfo in preparation for vote extensions. (#9122)
  • Change spelling from British English to American. Rename Subscription.Cancelled() to Subscription.Canceled() in libs/pubsub (#9144)
  • [abci] Removes unused Response/Request SetOption from ABCI (#9145)
  • [config] Rename the fastsync section and the fast_sync key blocksync and block_sync respectively (#9259)
  • [types] Reduce the use of protobuf types in core logic. ConsensusParams, BlockParams, ValidatorParams, EvidenceParams, VersionParams have become native types. They still utilize protobuf when being sent over the wire or written to disk. Moved ValidateConsensusParams inside (now native type) ConsensusParams, and renamed it to ValidateBasic. (#9287)
  • [abci/params] Deduplicate ConsensusParams and BlockParams so only types proto definitions are use. Remove TimeIotaMs and use a hard-coded 1 millisecond value to ensure monotonically increasing block times. Rename AppVersion to App so as to not stutter. (#9287)
  • [abci] New ABCI methods PrepareProposal and ProcessProposal which give the app control over transactions proposed and allows for verification of proposed blocks. (#9301)

BUG FIXES

  • [consensus] Fixed a busy loop that happened when sending of a block part failed by sleeping in case of error. (#4)
  • [state/kvindexer] Fixed the default behaviour of the kvindexer to index and query attributes by events in which they occur. In 0.34.25 this was mitigated by a separated RPC flag. @jmalicevic (#77)
  • [state/kvindexer] Resolved crashes when event values contained slashes, introduced after adding event sequences in #77. @jmalicevic (#382)
  • [consensus] (#386) Short-term fix for the case when needProofBlock cannot find previous block meta by defaulting to the creation of a new proof block. (@adizere)
    • Special thanks to the Vega.xyz team, and in particular to Zohar (@ze97286), for reporting the problem and working with us to get to a fix.
  • [docker] enable cross platform build using docker buildx (#9073)
  • [consensus] fix round number of enterPropose when handling RoundStepNewRound timeout. (#9229)
  • [docker] ensure Docker image uses consistent version of Go (#9462)
  • [p2p] prevent peers who have errored from being added to peer_set (#9500)
  • [blocksync] handle the case when the sending queue is full: retry block request after a timeout (#9518)

FEATURES

  • [abci] New ABCI methods PrepareProposal and ProcessProposal which give the app control over transactions proposed and allows for verification of proposed blocks. (#9301)

IMPROVEMENTS

  • [e2e] Add functionality for uncoordinated (minor) upgrades (#56)
  • [tools/tm-signer-harness] Remove the folder as it is unused (#136)
  • [p2p] Reactor Send, TrySend and Receive renamed to SendEnvelope, TrySendEnvelope and ReceiveEnvelope to allow metrics to be appended to messages and measure bytes sent/received. (#230)
  • [abci] Added AbciVersion to RequestInfo allowing applications to check ABCI version when connecting to CometBFT. (#5706)
  • [cli] add --hard flag to rollback command (and a boolean to the RollbackState method). This will rollback state and remove the last block. This command can be triggered multiple times. The application must also rollback state to the same height. (#9171)
  • [crypto] Update to use btcec v2 and the latest btcutil. (#9250)
  • [rpc] Added header and header_by_hash queries to the RPC client (#9276)
  • [proto] Migrate from gogo/protobuf to cosmos/gogoproto (#9356)
  • [rpc] Enable caching of RPC responses (#9650)
  • [consensus] Save peer LastCommit correctly to achieve 50% reduction in gossiped precommits. (#9760)

CometBFT is a fork of Tendermint Core as of late December 2022.

Bug bounty

Friendly reminder, we have a bug bounty program.

Previous changes

For changes released before the creation of CometBFT, please refer to the Tendermint Core CHANGELOG.md.