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release-notes.md

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2.2.0

  • Improved banning mechanism for deprecated nodes (nodes not updated after an hardfork will start to ban updated nodes because receiving newer blocks without a known parent - this will prevent unnecessary network traffic)

2.1.0

  • Added support for forger's connections prioritization
  • Node synchronization improvements:
    • Optimization of lookup strategy in modifiersCache
    • Preserve the order of block during synchronization
  • Added option to force only connecting to known peers
  • Fixes/Improvements on the way the SyncTracker handles the internal statuses maps

2.0.3

  • Fix in the handshake process - start connecting to nodes only after the Synchronizer is initialized

2.0.2

  • P2p rate limitng feature - added tx rebroadcast when rate limiting is reenabled
  • Seeder nodes support

2.0.1

  • P2p rate limitng feature

2.0.0-RC11

  • Changed library for the Bcrypt hashing algorithm and added additional unit tests

2.0.0-RC10

  • UPnP module removed
  • DisconnectPenalty: new penalty that causes the node to close the connection with the peer
  • CustomPenaltyDuration(duration: Long): a class for a custom penalty duration time
  • added new endpoints:
    • GET /peers/peer/{address} -> get peer by address
    • DELETE /peers/peer -> delete a peer from the internal database
    • DELETE /peers/blacklist -> remove a peer from the blacklist
  • existing endpoints changes:
    • POST /peers/blacklist -> body {"address": String, "durationInMinutes": Int} (the durationInMinutes default value is 60)
    • POST /peers/connect -> body {"address": String}
  • messages renaming:
    • RandomPeerExcluding → RandomPeerForConnectionExcluding
    • Blacklisted [NetworkController.message] → DisconnectFromAddress
  • configuration changes:
    • maxIncomingConnections & maxOutgoingConnections in place of maxConnections
    • penalizeNonDelivery: penalize remote peers not answering our requests during deliveryTimeout
    • messageLengthBytesLimit: max message size
    • maxRequestedPerPeer: limit for the number of modifiers to request and process at once
    • maxModifiersSpecMessageSize in place of maxPacketSize: maximum modifier spec message size
    • storageBackupInterval: interval to backup peers' storages
    • storageBackupDelay: delay to start peers' backup

2.0.0-RC9

  • Hotfix - mistakenly penalizing peers during synchronization

2.0.0-RC8

  • Application execution context name fixed.
  • Peers penalization flow fix: do not increment safe interval in case of repeated penalties.

2.0.0-RC7

  • CI/CD implementation
  • Delivery Tracker - limit requests map per peer
  • add request tracker actor
  • add upper bound limit for peers database
  • rename Scorex -> Sparkz
  • update lib versions to latest, check and fix vulnerabilities
  • KnownPeers should never be discarded
  • exclude unconfirmedConnections and already active connections when selecting a new candidate peer to connect to
  • akka, akkaHttp and circe updated to latest version.
  • add SessionIdPeerFeature
  • updating last seen & dropping inactive connections
  • maven https support
  • pass details message by name into ValidationState.validate
  • message parse in Synchronizer trait
  • Simplified check for transaction delivery
  • externalizing MessageSerializer
  • Fixed "too many open files" error
  • moved peerSynchronizer creation to app
  • Keep-Alive flag removed
  • Banning peers for sending adversarially constructed messages

2.0.0-RC6

  • api_key header added to CORS
  • Terminate node if port is in use
  • akka versions 2.5.24 and 10.1.9

2.0.0-RC4

  • modifierCompanions renamed to modifierSerializers in NodeViewHolder

2.0.0-RC3

  • MinimalState interface simplification: validate() puled away from the basic trait
  • maxRollback field added to MinimalState
  • No transactions field with an optional value in PersistentNodeViewModifier, use TransactionsCarryingPersistentNodeViewModifier descendant for modifiers with transactions.
  • Non-exhaustive pattern-matching fix in NodeViewholder.pmodModify()
  • Simplification of type parameters in many classes around the whole codebase
  • FastCryptographicHash removed
  • Some obsolete code removed, such as temp/mining folder, ScoreObserver class
  • Scrypto 2.0.0
  • Using tagged types instead of Array[Byte], suppertagged microframework is used for that

2.0.0-RC2

  • MinimalState interface made minimal
  • protocolVersion in P2P Handshake
  • Scrypto 1.2.3
  • BoxMinimalState moved to scorex.mid.state

2.0.0-RC1

  • Transaction interface simplified (fee & timestamp fields removed)
  • Scala 2.12
  • IODB 0.3.1
  • reportInvalid() in History
  • Issue #19 fixed
  • MapDB dependency removed
  • StateChanges reworked
  • TwinsCoin example improved

2.0.0-M4

  • IODB dependency upgraded to 0.2.+
  • TwinsChain example massively improved, README on it has been added (see "examples" folder)
  • akka-http dependency removed, Swagger updated

2.0.0-M3

Serialization have been reworked throughout the core to be consistent (see the new Serializer interface).

Handshake timeout implemented: (p2p/handshakeTimeout in settings.json) Agent name and version have been moved to settings.json ("agent" and "version" settings)

Hybrid chain example got bugfixing and new tests.

2.0.0-M2

  • Wallet interface added
  • MvStore dependency removed
  • StoredBlockchain trait removed
  • ViewSynchronizer trait removed
  • Miner and MiningController are removed from the core
  • Maven artefact has been renamed from "scorex-basics" to "scorex-core"
  • blockFields method of a Block has been removed