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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

2.45.0

Fixed

  • A bug where optional fields for NodeUpdateTransaction were being set as default values.

Added

  • New api for creating client with mirror network - forMirrorNetwork

2.44.0

Fixed

  • Do not shut down externally provided executor
  • Fix IllegalStateException when specific node id is not present in address book

2.43.0

Changed

  • Update protobufs from hedera-services
  • client.setNetworkFromAddressBook updates the address book by default

2.42.0

Added

  • addBytes4 and addBytes4Array methods for ContractFunctionParameters
  • Support ports that are not well known for use with port forwarding

Fixed

  • setFileId resets contractId, and similarly, when setContractId resets fileId

2.41.0

Fixed

  • Android runtime errors for API levels 26-33.

2.40.0

Added

  • The ability to create multiple Clients using shared ExecutorService
  • closeChannels method to Client to close the channels without closing the executor
  • New method to update security parameters when updating the addressbook

Fixed

  • handling of BUSY status code

2.39.0

Added

  • TokenAirdropTransaction,TokenClaimAirdropTransaction,TokenCancelAirdropTransaction (HIP-904)

Fixed

  • handling of FEE_SCHEDULE_FILE_PART_UPLOADED status code

2.38.0

Added

  • NodeCreateTransaction,NodeUpdateTransaction,NodeDeleteTransaction (part of HIP-869)

Changed

  • updated examples

2.37.0

Changed

  • updated bouncycastle dependency
  • updated protoc dependency
  • other various codebase chores

2.36.0

Added

  • Token Reject functionality (part of HIP-904)

2.36.0-beta.1

Added

  • Token Reject functionality (part of HIP-904)

2.35.1

Added

  • toStandardECDSAsecp256k1PrivateKeyCustomDerivationPath function to Mnemonic
  • fromBytes function to Key

Changed

  • build scripts rework

Fixed

  • handling of PLATFORM_NOT_ACTIVE status code when calling getReceipt() or getRecord()
  • build scripts fix
  • paths in examples/README.md

2.35.0

Added

  • toStandardECDSAsecp256k1PrivateKeyCustomDerivationPath function to Mnemonic
  • fromBytes function to Key

Changed

  • build scripts rework

Fixed

  • handling of PLATFORM_NOT_ACTIVE status code when calling getReceipt() or getRecord()

2.34.0

Added

  • possibility to change or remove existing keys from a token (HIP-540)

2.33.1

Changed

  • AccountBalanceQuery, AccountInfoQuery, and ContractInfoQuery get all the data from consensus nodes again

2.33.0

Added

  • add decimal field to TokenRelationship class

Changed

  • AccountBalanceQuery, AccountInfoQuery, and ContractInfoQuery get part of the data from the Mirror Node REST API (HIP-367)
  • improved documentation in repository
  • updated protobufs

Fixed

  • undeprecate AccountBalance.tokens, AccountBalance.tokenDecimals, AccountInfo.tokenRelationships, ContractInfo.tokenRelationships

Deprecated

  • TokenRelationship.symbol, use TokenInfo.symbol instead
  • AccountId.populateAccountNumAsync, use AccountId.populateAccountNum instead
  • AccountId.populateAccountEvmAddressAsync, use AccountId.populateAccountEvmAddress instead
  • ContractId.populateContractNumAsync, use ContractId.populateContractNum instead

2.32.0

Added

  • METADATA key and possibility to update NFT metadata (HIP-657)
  • Fungible Token Metadata Field (HIP-646)
  • NFT Collection Token Metadata Field (HIP-765)
  • a method to calculate the recoveryId for ECDSA signatures

Changed

  • improved documentation in repository
  • updated protobufs

2.32.0-beta.1

Added

  • METADATA key and possibility to update NFT metadata (HIP-657)
  • Fungible Token Metadata Field (HIP-646)
  • NFT Collection Token Metadata Field (HIP-765)

Changed

  • improved documentation in repository
  • updated protobufs

2.31.0

Added

  • possibility to optionally send transaction data without required transaction fields (HIP-745)

2.30.0

Added

  • signerNonce field to ContractFunctionResult (HIP-844)

2.29.2

Fixed

  • removed streamsupport dependency

2.29.1

Fixed

  • Transaction.fromBytes() and Transaction.getSignatures() throw an exception for transactions signed using an ECDSA key
  • spurious INVALID_TRANSACTION_START in TransactionId.generate()

2.29.0

Added

  • populateAccountEvmAddress and populateAccountEvmAddressAsync to AccountId

Fixed

  • duplicate transaction IDs at high TPS (>25K)
  • android compatibility issues

Changed

  • GRPC configurations

2.28.0

Added

  • addBoolArray function to ContractFunctionParameters

Fixed

  • java.lang.VerifyError exception in examples

Changed

  • updated addressbooks
  • improved timeout handling

2.27.0

Fixed

  • Timeout for TransactionResponse.getReceipt not working well

2.26.0

Added

  • contractNonces to ContractFunctionResult
  • Support for ECDSA keys generated by OpenSSL

2.25.0

Added

  • Custom logger used in Client and Executable

Removed

  • ThreeTen dependency
  • Jabel dependency
  • future-converter-java8-guava dependency
  • sdk-jdk7 artifact

Changed

  • Minimum Java version to 17
  • Minimum supported Android version to 8

2.24.1

Fixed

  • The transactionId nanoseconds are now left padded with 0s for 9 chars
  • Importing and exporting ECDSA keys to DER format is now compatible with OpenSSL

2.24.0

Added

  • Alias support in AccountCreateTransaction
  • CreateAccountWithAliasExample
  • CreateAccountWithAliasAndReceiverSignatureRequiredExample

2.22.0

Added

  • Remove the insecure port of mirror nodes
  • Documentation for all API classes, methods and fields
  • Delegate spender functionality to AccountAllowanceApproveTransaction

Fixed

  • Some failing integration tests

2.21.0

Added

  • TransactionRecord.evmAddress
  • PublicKeyECDSA.toEvmAddress()
  • AccountId.fromEvmAddress()
  • AccountId.fromString() now supports EVM address
  • TransferTransaction.addHbarTransfer() now supports EVM address
  • AutoCreateAccountTransferTransactionExample
  • TransferUsingEvmAddressExample
  • AccountCreationWaysExample

2.20.0

Added

  • TRANSACTION_HAS_UNKNOWN_FIELDS and ACCOUNT_IS_IMMUTABLE in Status
  • toStandard[Ed25519|ECDSAsecp256k1]PrivateKey() to Mnemonic
  • fromSeed[ED25519|ECDSAsecp256k1]() to PrivateKey
  • [PrivateKeyED25519|PrivateKeyECDSA].fromSeed()
  • Bip32Utils class

Fixed

  • Misleading logging when an unhealthy node is hit
  • Default mirror node for mainnet is now mainnet-public.mirrornode.hedera.com:443 instead of mainnet-public.mirrornode.hedera.com:5600
  • Default mirror node for testnet is now testnet.mirrornode.hedera.com:443 instead of hcs.testnet.mirrornode.hedera.com:5600
  • Default mirror node for previewnet is now previewnet.mirrornode.hedera.com:443 instead of hcs.previewnet.mirrornode.hedera.com:5600
  • ECDSA secp256k1 keys now support derivation

Deprecated

  • Mnemonic.toPrivateKey() use Mnemonic.toStandard[Ed25519|ECDSAsecp256k1]PrivateKey instead
  • PrivateKey.fromMnemonic() use Mnemonic.toStandard[Ed25519|ECDSAsecp256k1]PrivateKey instead

2.19.0

Added

  • freezeWith() and sign() to ContractCreateFlow

Fixed

  • Executable.execute(Client client, Duration timeout) now sets gRPC deadline to the underlying gRPC request
  • Transaction sometimes being reported as duplicate when submitting large number of transactions
  • RejectedExecutionException under heavy load
  • nodes not clearing when reusing transaction
  • BIP-39 - unicode mnemonic passphrases are normalized to NFKD
  • Renamed allowanceSpenderAccountId to spenderId in TokenNftInfo

2.18.2

Fixed

  • Client.close() now tracks and automatically unsubscribes from Mirror Node Topic Queries

2.18.1

Added

  • ContractHelper now supports bytecode property in compiled contract JSON.
  • ZeroTokenOperationsExample
  • TransactionResponse.[get|set]ValidateStatus()
  • TransactionReceipt.validateStatus()
  • TransactionRecord.validateReceiptStatus()
  • TransactionReceipt.transactionId
  • TopicUpdateTransaction.[get|set]ExpirationTime()
  • CustomFee.[set|get]AllCollectorsAreExempt()
  • ExemptCustomFeesExample
  • AccountCreateWithHtsExample

Fixed

  • Execute with a timeout can ignore timeout and block indefinitely in CI tests
  • The Android example can now be run with the local SDK version

2.17.4

Added

  • AccountCreateTransaction.[set|get]alias[Key|EvmAddress]()
  • ContractCreateFlow.[set|get]MaxChunks()
  • Status.[to|from]ResponseCode()
  • ContractCreateFlow.[set|get]AutoRenewAccountId()
  • Client now automatically updates the network via a mirror node query at regular intervals. You can set/get the interval with Client.[set|get]NetworkUpdatePeriod()
  • Client can now be set from a NodeAddressBook with Client.setNetworkFromAddressBook()
  • Client.setMirrorTransportSecurity()
  • Client.mirrorIsTransportSecurity()
  • SolidityPrecompileExample
  • Improved PEM file support via PrivateKey.fromPem()

Fixed

  • AccountIds with aliasEvmAddress now serialize/deserialize correctly.
  • TokenCreateTransaction's default fee is now 40 Hbar.
  • validateChecksum(), toStringWithChecksum(), hashCode(), equals(), and compareTo() now function correctly for AccountIds with aliasEvmAddresses.
  • Changed the default transaction fee for AccountCreateTransaction to 5 Hbar.
  • PrivateKey.is[ED25519|ECDSA]() is now correct for ED25519 private keys.
  • Default mirror node for mainnet is now mainnet-public.mirrornode.hedera.com:443 instead of hcs.mainnet.mirrornode.hedera.com:5600

v2.17.3

Fixed

  • Thread leak in Client
  • Client.setTransportSecurity() now updates mirror network

v2.17.2

Added

  • ContractUpdateTransaction.clearStaked[Account|Node]Id()

Deprecated

  • [Contract|Account]CreateTransaction.[set|get]ProxyAccountId() with no replacement
  • ContractCreateFlow.[set|get]ProxyAccountId() with no replacement

Fixed

  • ContractCreateFlow.setMaxAutomaticTokenAssociations()
  • ContractFunctionResult.senderAccountId now serializes correctly
  • CustomRoyaltyFee now clones and toString()s correctly
  • ScheduleCreateTransaction.expirationTime now deserializes correctly
  • ScheduleInfo now deserializes correctly
  • Made StakingInfo.[to|from]Bytes() public
  • TransactionReceipt.topicRunningHash now toString()s correctly
  • TransactionRecord.[prngBytes|prngNumber|tokenNftTransfers] now serializes/deserializes correctly
  • [Account|Contract]UpdateTransaction.getDeclineStakingReward() now returns @Nullable Boolean instead of boolean, and no longer throws a NullPointerException
  • Client.setNodeMaxBackoff()
  • Undeprecate *ContractId.fromSolidityAddress()

v2.17.1

Added

  • TokenNftInfo.allowanceSpenderAccountId

Deprecated

  • AccountBalance.[tokens|tokenDecimals] use a mirror node query instead
  • AccountInfo.tokenRelationships use a mirror node query instead
  • ContractInfo.tokenRelationships use a mirror node query instead

Fixed

  • TokenNftInfo.[to|from]Bytes()

v2.17.0

Added

  • PrngThansaction
  • TransactionRecord.prngBytes
  • TransactionRecord.prngNumber

Deprecated

  • ContractFunctionResult.stateChanges - Use mirror node for contract traceability instead
  • ContractStateChanges
  • StorageChange

v2.16.3

Added

  • ContractCreateTransaction.autoRenewAccountId
  • ContractUpdateTransaction.autoRenewAccountId

v2.16.2

Added

  • HbarUnit.getSymbol()
  • SemanticVersion.toString()
  • Executable.setRequestListener()
  • Executable.setResponseListener()

Fixed

  • PrivateKey.fromString() should support 0x prefix
  • ManagedNodeAddress.equals() should compare ports

v2.16.1

Added

  • ScheduleInfo.waitForExpiry
  • ScheduleInfo.ledgerId "

v2.16.0

Added

  • StakingInfo
  • AccountCreateTransaction.stakedAccountId
  • AccountCreateTransaction.stakedNodeId
  • AccountCreateTransaction.declineStakingReward
  • ContractCreateTransaction.stakedAccountId
  • ContractCreateTransaction.stakedNodeId
  • ContractCreateTransaction.declineStakingReward
  • AccountUpdateTransaction.stakedAccountId
  • AccountUpdateTransaction.stakedNodeId
  • AccountUpdateTransaction.declineStakingReward
  • ContractUpdateTransaction.stakedAccountId
  • ContractUpdateTransaction.stakedNodeId
  • ContractUpdateTransaction.declineStakingReward
  • TransactionRecord.paidStakingRewards
  • ScheduleCreateTransaction.expirationTime
  • ScheduleCreateTransaction.waitForExpiry
  • Protobuf requests and responses will be logged in hex
  • There should be three artifacts now, sdk-jdk7, sdk, and sdk-full

v2.16.0-beta.1

Added

  • StakingInfo
  • AccountCreateTransaction.stakedAccountId
  • AccountCreateTransaction.stakedNodeId
  • AccountCreateTransaction.declineStakingReward
  • ContractCreateTransaction.stakedAccountId
  • ContractCreateTransaction.stakedNodeId
  • ContractCreateTransaction.declineStakingReward
  • AccountUpdateTransaction.stakedAccountId
  • AccountUpdateTransaction.stakedNodeId
  • AccountUpdateTransaction.declineStakingReward
  • ContractUpdateTransaction.stakedAccountId
  • ContractUpdateTransaction.stakedNodeId
  • ContractUpdateTransaction.declineStakingReward
  • TransactionRecord.paidStakingRewards
  • ScheduleCreateTransaction.expirationTime
  • ScheduleCreateTransaction.waitForExpiry

v2.15.0

Added

  • EthereumFlow
  • EthereumTransactionData
  • EthereumTransactionDataLegacy
  • EthereumTransactionDataEip1559

v2.14.0

v2.14.0-beta.3

  • add missing javadoc to the sdk files

Deprecated

  • TransactionResponse.scheduledTransactionId with no replacement.

Added

  • AccountId.aliasEvmAddress
  • ContractCreateTransaction.[get|set]MaxAutomaticTokenAssociations()
  • ContractCreateTransaction.[get|set]Bytecode()
  • ContractUpdateTransaction.[get|set]MaxAutomaticTokenAssociations()
  • ContractCreateFlow.[get|set]MaxAutomaticTokenAssociations()
  • AccountInfo.ethereumNonce
  • ContractCallResult.senderAccountId
  • ContractCallQuery.[get|set]SenderAccountId()
  • TransactionRecord.ethereumHash
  • EthereumTransaction
  • CustomRoyaltyFee.getFallbackFee()
  • TransactionResponse.get[Receipt|Record]Query()

v2.13.0 - Where did it go?!

v2.12.0

Added

  • AccountAllowanceAdjustTransaction with no replacement.
  • AccountAllowanceDeleteTransaction
  • ContractFunctionResult.[gas|hbarAmount|contractFunctionParametersBytes]
  • TransactionRecord.[hbar|token|tokenNft]AllowanceAdjustments.
  • AccountInfo.[hbar|token|tokenNft]Allowances.
  • AccountAllowanceExample
  • License Headers

v2.12.0-beta.1

Added

  • AccountAllowanceDeleteTransaction
  • ContractFunctionResult.[gas|hbarAmount|contractFunctionParametersBytes]
  • AccountAllowanceExample
  • License Headers

Deprecated

  • AccountAllowanceAdjustTransaction.revokeTokenNftAllowance() with no replacement.

v2.11.0

Added

  • AccountInfoFlow
  • Client.[set|get]NodeMinReadmitPeriod()
  • Support for using any node from the entire network upon execution if node account IDs have no been locked for the request.
  • Support for ContractFunctionParameters integers with different bit widths.

Fixed

  • Transaction.fromBytes() now verifies that transaction bodies in transaction list match.

v2.11.0-beta.1

Added

  • AccountInfoFlow
  • Client.[set|get]NodeMinReadmitPeriod()
  • Support for using any node from the entire network upon execution if node account IDs have no been locked for the request.
  • Support for ContractFunctionParameters integers with different bit widths.
  • CreateTopicExample
  • GetAccountInfoExample
  • MultiSigOfflineExample
  • ScheduledTransactionMultiSigThresholdExample
  • ScheduleIdenticalTransactionExample
  • SignTransactionExample

Fixed

  • Transaction.fromBytes() now verifies that transaction bodies in transaction list match.
  • ConstructClientExample
  • CreateSimpleContractExample
  • CreateStatefulContractExample
  • DeleteAccountExample

v2.10.1

Added

  • AccountAllowanceApproveTransaction.approve[Hbar|Token|TokenNft]Allowance()
  • AccountAllowanceApproveTransaction.get[Hbar|Token|TokenNft]Approvals()
  • AccountAllowanceAdjustTransaction.[grant|revoke][Hbar|Token|TokenNft]Allowance()
  • AccountAllowanceAdjustTransaction.[grant|revoke]TokenNftAllowanceAllSerials()
  • TransactionRecord.[hbar|token|tokenNft]AllowanceAdjustments
  • TransferTransaction.addApproved[Hbar|Token|Nft]Transfer()

Deprecated

  • AccountAllowanceApproveTransaction.get[Hbar|Token|TokenNft]Allowances(), use get*Approvals() instead.
  • AccountAllowanceApproveTransaction.add[Hbar|Token|TokenNft]Allowance[WithOwner](), use approve*Allowance() instead.
  • AccountAllowanceAdjustTransaction.add[Hbar|Token|TokenNft]Allowance[WithOwner](), use [grant|revoke]*Allowance() instead.
  • TransferTransaction.set[Hbar|Token|Nft]TransferApproval(), use addApproved*Transfer() instead.

v2.10.0

Added

  • ContractCreateFlow to simplify contract creation.
  • PrivateKey.isED25519()
  • PrivateKey.isECDSA()
  • PrivateKeyED25519.isED25519()
  • PrivateKeyED25519.isECDSA()
  • PrivateKeyECDSA.isED25519()
  • PrivateKeyECDSA.isECDSA()
  • PublicKey.isED25519()
  • PublicKey.isECDSA()
  • PublicKeyED25519.isED25519()
  • PublicKeyED25519.isECDSA()
  • PublicKeyECDSA.isED25519()
  • PublicKeyECDSA.isECDSA()

Fixed

  • Regenerated AccountIDTest.snap
  • AddressBookQuery
  • Checksums. As a consequence, all previously generated checksums for testnet or previewnet will now be regarded as incorrect. Please generate new checksums for testnet and previewnet where necessary.

Deprecated

  • AccountUpdateTransaction.[set|get]AliasKey() with no replacement.
  • AccountAllowance[Adjust|Approve]Transaction.add*AllowanceWithOwner()

Fixed

  • Checksums. As a consequence, all previously generated checksums for testnet or previewnet will now be regarded as incorrect. Please generate new checksums for testnet and previewnet where necessary.

Deprecated

  • AccountUpdateTransaction.[set|get]AliasKey() with no replacement.

v2.10.0-beta.1

Added

  • ContractCreateFlow to simplify contract creation.
  • PrivateKey.isED25519()
  • PrivateKey.isECDSA()
  • PrivateKeyED25519.isED25519()
  • PrivateKeyED25519.isECDSA()
  • PrivateKeyECDSA.isED25519()
  • PrivateKeyECDSA.isECDSA()
  • PublicKey.isED25519()
  • PublicKey.isECDSA()
  • PublicKeyED25519.isED25519()
  • PublicKeyED25519.isECDSA()
  • PublicKeyECDSA.isED25519()
  • PublicKeyECDSA.isECDSA()

Fixed

  • Regenerated AccountIDTest.snap
  • AccountAllowance[Adjust|Approve]Transaction.add*AllowanceWithOwner()
  • AddressBookQuery

Deprecated

  • AccountUpdateTransaction.[set|get]AliasKey() with no replacement.

v2.9.0

Added

  • owner field to *Allowance classes.
  • Executable.[set|get]GrpcDeadline()

Fixed

  • AccountAllowanceAdjustTransaction now deserializes correctly with Transaction.fromBytes()

v2.9.0-beta.1

Added

  • owner field to *Allowance classes.
  • Executable.[set|get]GrpcDeadline()

Fixed

  • AccountAllowanceAdjustTransaction now deserializes correctly with Transaction.fromBytes()

v2.8.0

Added

  • CREATE2 Solidity addresses can now be represented by a ContractId with evmAddress set.
  • ContractId.fromEvmAddress()
  • ContractFunctionResult.stateChanges
  • ContractFunctionResult.evmAddress
  • ContractStateChange
  • StorageChange
  • New response codes.
  • ChunkedTransaction.[set|get]ChunkSize(), and changed default chunk size for FileAppendTransaction to 2048.

Fixed

  • TransactionId.setRegenerateTransactionId()
  • Transaction.execute(client, timeout)

Deprecated

  • ContractId.fromSolidityAddress(), use ContractId.fromEvmAddress() instead.

v2.8.0-beta.1

Added

  • CREATE2 Solidity addresses can now be represented by a ContractId with evmAddress set.
  • ContractId.fromEvmAddress()
  • ContractFunctionResult.stateChanges
  • ContractFunctionResult.evmAddress
  • ContractStateChange
  • StorageChange
  • New response codes.
  • ChunkedTransaction.[set|get]ChunkSize(), and changed default chunk size for FileAppendTransaction to 2048.
  • AccountAllowance[Adjust|Approve]Transaction
  • AccountInfo.[hbar|token|tokenNft]Allowances
  • [Hbar|Token|TokenNft]Allowance
  • [Hbar|Token|TokenNft]Allowance
  • TransferTransaction.set[Hbar|Token|TokenNft]TransferApproval()

Fixed

  • TransactionId.setRegenerateTransactionId()
  • Transaction.execute(client, timeout)

Deprecated

  • ContractId.fromSolidityAddress(), use ContractId.fromEvmAddress() instead.

v2.7.0

Added

  • Support for regenerating transaction IDs on demand if a request responsed with TRANSACITON_EXPIRED

v2.7.0-beta.1

Added

  • Support for regenerating transaction IDs on demand if a request responds with TRANSACTION_EXPIRED

v2.6.0

Added

  • LedgerId
  • Client.[set|get]LedgerId()
  • TransferTransaction.addTokenTransferWithDecimals(), TransferTransaction.getTokenIdDecimals().
  • ledgerId fields in AccountInfo, ContractInfo, FileInfo, ScheduleInfo, TokenInfo, TokenNftInfo, and TopicInfo
  • UNEXPECTED_TOKEN_DECIMALS response code.
  • PublicKey.verifyTransaction() should use the correct protobuf field per key type
  • AccountId.aliasKey, including AccountId.[to|from]String() support.
  • [PublicKey|PrivateKey].toAccountId().
  • aliasKey fields in TransactionRecord and AccountInfo.
  • nonce field in TransactionId, including TransactionId.[set|get]Nonce()
  • children fields in TransactionRecord and TransactionReceipt
  • duplicates field in TransactionReceipt
  • [TransactionReceiptQuery|TransactionRecordQuery].[set|get]IncludeChildren()
  • TransactionReceiptQuery.[set|get]IncludeDuplicates()
  • New response codes.
  • Support for ECDSA SecP256K1 keys.
  • PrivateKey.generate[ED25519|ECDSA]()
  • [Private|Public]Key.from[Bytes|String][DER|ED25519|ECDSA]()
  • [Private|Public]Key.to[Bytes|String][Raw|DER]()
  • DelegateContractId to easily distingish between having a ContractId and DelegateContractId for a key

Deprecated

  • NetworkName, Client.[set|get]NetworkName(), user LedgerId and Client.[set|get]LedgerId() instead.
  • PrivateKey.generate(), use PrivateKey.generate[ED25519|ECDSA]() instead.

v2.6.0-beta.3

Added

  • LedgerId
  • Client.[set|get]LedgerId()
  • TransferTransaction.addTokenTransferWithDecimals(), TransferTransaction.getTokenIdDecimals().
  • ledgerId fields in AccountInfo, ContractInfo, FileInfo, ScheduleInfo, TokenInfo, TokenNftInfo, and TopicInfo
  • UNEXPECTED_TOKEN_DECIMALS response code.

Deprecated

  • NetworkName, Client.[set|get]NetworkName(), user LedgerId and Client.[set|get]LedgerId() instead.

v2.6.0-beta.2

Fixed

  • PublicKey.verifyTransaction() should use the correct protobuf field per key type

v2.6.0-beta.1

Added

  • AccountId.aliasKey, including AccountId.[to|from]String() support.
  • [PublicKey|PrivateKey].toAccountId().
  • aliasKey fields in TransactionRecord and AccountInfo.
  • nonce field in TransactionId, including TransactionId.[set|get]Nonce()
  • children fields in TransactionRecord and TransactionReceipt
  • duplicates field in TransactionReceipt
  • [TransactionReceiptQuery|TransactionRecordQuery].[set|get]IncludeChildren()
  • TransactionReceiptQuery.[set|get]IncludeDuplicates()
  • New response codes.
  • Support for ECDSA SecP256K1 keys.
  • PrivateKey.generate[ED25519|ECDSA]()
  • [Private|Public]Key.from[Bytes|String][DER|ED25519|ECDSA]()
  • [Private|Public]Key.to[Bytes|String][Raw|DER]()

Deprecated

  • PrivateKey.generate(), use PrivateKey.generate[ED25519|ECDSA]() instead.

v2.5.0

Added

  • Support for adding multiple addresses for the same node to the network.
  • *Id objects are now comparable.
  • Adds createdContractIds to ContractFunctionResult
  • Makes AccountBalance.[to|from]Bytes() public.
  • New smart contract response codes

v2.5.0-beta.1

Added

  • New smart contract response codes

v2.4.0

Fixed

  • Implement gRPC connecting timeouts to prevent TRANSACTION_EXPIRED from occurring due to nodes not responding
  • ManagedNodeAddress will no longer used named regex groups

Deprecated

  • Deprecated ContractCallQuery.[set|get]MaxResultSize() with no replacement.
  • Deprecated ContractUpdateTransaction.[set|get]BytecodeFileId() with no replacement.

v2.4.0-beta.1

Deprecated

  • Deprecated ContractCallQuery.[set|get]MaxResultSize() with no replacement.
  • Deprecated ContractUpdateTransaction.[set|get]BytecodeFileId() with no replacement.

v2.3.0

Added

  • Support for toggling TLS for both mirror network and services network

v2.2.0

Added

  • FreezeType
  • FreezeTransaction.[get|set]FreezeType()
  • FreezeTransaction.[get|set]FileId()
  • FreezeTransaction.[get|set]FileHash()

Deprecated

  • FreezeTransaction.[get|set]UpdateFileId(), use .[get|set]FileId() instead.
  • FreezeTransaction.[get|set]UpdateFileHash(), use .[get|set]FileHash() instead.

v2.2.0-beta.2

Fixed

  • Make TokenPauseTransaction and TokenUnpauseTransaction constructors public

v2.2.0-beta.1

Added

  • TokenPauseTransaction
  • TokenUnpauseTransaction
  • TokenPauseStatus
  • pauseKey field in TokenUpdateTransaction and TokenCreateTransaction
  • pauseKey and pauseStatus fields in TokenInfo (TokenInfoQuery)

Fixed

  • Added keep alive timeout of 10 seconds to all gRPC connections

Added

  • Client.setTransportSecurity() - Enable/Disable TLS for any node

Changed

  • Updated *.[execute|getReceipt|getRecord]() methods to not use the asynchronous version underneath

Fixed

  • Transaction[Receipt|Record]Query will no longer error when TransactionReceipt.status is not SUCCESS. Only *.get[Receipt|Record]() should error when TransactionReceipt.status is not SUCCESS.

v2.1.0

Added

  • NftId.[to|from]string() now uses format 1.2.3/4 instead of 1.2.3@4
  • TokenNftInfoQuery.setNftId()
  • Support for automatic token associations
    • TransactionRecord.automaticTokenAssociations
    • AccountInfo.maxAutomaticTokenAssociations
    • AccountCreateTransaction.maxAutomaticTokenAssociations
    • AccountUpdateTransaction.maxAutomaticTokenAssociations
    • TokenRelationship.automaticAssociation
    • TokenAssociation
  • networkName as a supported config file options

v2.1.0-beta.1

Added

  • NftId.[to|from]string() now uses format 1.2.3/4 instead of 1.2.3@4
  • TokenNftInfoQuery.setNftId()
  • Support for automatic token associations
    • TransactionRecord.automaticTokenAssociations
    • AccountInfo.maxAutomaticTokenAssociations
    • AccountCreateTransaction.maxAutomaticTokenAssociations
    • AccountUpdateTransaction.maxAutomaticTokenAssociations
    • TokenRelationship.automaticAssociation
    • TokenAssociation

v2.0.14

Deprecated

  • TokenNftInfoQuery.byNftId() - Use TokenNftInfoQuery.setNftId() instead
  • TokenNftInfoQuery.byAccountId() with no replacement
  • TokenNftInfoQuery.byTokenId() with no replacement
  • TokenNftInfoQuery.[set|get]Start() with no replacement
  • TokenNftInfoQuery.[set|get]End() with no replacement
  • Client.networkName can now be specified via config file

v2.0.13

Added

  • Account[Create|Update]Transaction.[get|set]MaxAutomaticTokenAssociations
  • TokenAssociation and TransactionRecord.automaticTokenAssociations
  • AccountInfo.maxAutomaticTokenAssociations
  • TokenRelationship.automaticAssociation
  • TokenNftInfoQuery.setNftId()
  • New status codes

Deprecated

  • TokenNftInfoQuery.[by|get]AccountId() with no replacement
  • TokenNftInfoQuery.[by|get]TokenId() with no replacement
  • TokenNftInfoQuery.[set|get]Start() with no replacement
  • TokenNftInfoQuery.[set|get]End() with no replacement
  • TokenNftInfoQuery.byNftId() use .setNftId() instead

Fixed

  • TLS connector failing when the networks address book did not have cert hashes

v2.0.12

Added

  • Support for TLS connections with Hedera Services nodes when network addresses end in 50212 or 443
  • Added FeeAssessmentMethod.
  • Added [get|set]AssessmentMethod() to CustomFractionalFee
  • Added CustomRoyaltyFee
  • Added payerAccountIdList to AssessedCustomFee
  • Added fields to FreezeTransaction
  • Added [min|max]Backoff to Client and Executable

Fixed

  • Bugs in [to|from]Bytes() in TopicUpdateTransaction and TokenUpdateTransaction

Deprecated

  • Deprecated Client.setMax[TransactionFee|QueryPayment](), added Client.setDefaultMax[TransactionFee|QueryPayment]() and Client.getDefaultMax[TransactionFee|QueryPayment]()

v2.0.11

Added

  • ChunkedTransaction.getAllSignatures()

Fixed

  • Transaction.getSignatures() incorrectly building signature list
  • TopicMessageQuery pending messages being discarded on retry
  • ChunkedTransaction.getAllTransactionHashesPerNode() incorrectly building signature map
  • ScheduleInfo.getScheduledTransaction() still not setting max fee appropriately

Changed

  • *.setSerials() will now clone list passed in to prevent changes

v2.0.10

Added

  • Client.getRequestTimeout()
  • Client.pingAsync() and Client.pingAllAsync() useful for validating all nodes within the network before executing any real request
  • Client.[set|get]MaxAttempts() default max attempts for all transactions
  • Client.[set|get]MaxNodeAttempts() set max attempts to retry a node which returns bad gRPC status such as UNAVAILBLE
  • Client.[set|get]NodeWaitTime() change the default delay before attempting a node again which has returned a bad gRPC status
  • Client.setAutoValidateChecksums() set whether checksums on ids will be automatically validated upon attempting to execute a transaction or query. Disabled by default. Check status with Client.isAutoValidateChecksumsEnabled()
  • *Id.toString() no longer stringifies with checksums. Use *Id.getChecksum() to get the checksum that was parsed, or use *Id.toStringWithChecksum(client) to stringify with the correct checksum for that ID on the client's network.
  • *Id.validateChecksum() to validate a checksum. Throws new BadEntityIdException
  • Client.[set|get]NetworkName() declare which network this client is connected to, for purposes of checksum validation.
  • CustomFixedFee.[set|get]HbarAmount() makes this fixed fee an Hbar fee of the specified amount
  • CustomFixedFee.setDenominatingTokenToSameToken() this fixed fee will be charged in the same token.

Deprecated

  • *Id.validate() use *Id.validateChecksum() instead

Fixed

  • ScheduleInfo.getTransaction() incorrectly setting max transaction fee to 2 Hbars

v2.0.9

Fixed

  • PrivateKey.legacyDerive() should behave the same as other SDKs

Removed

  • *.addCustomFee() use *.setCustomFees() instead

v2.0.9-beta.2

Fixed

  • TokenUpdateTransaction.clearAutoRenewAccountId()
  • Scheduled TransferTransaction

v2.0.9-beta.1

Added

  • Support for NFTS
    • Creating NFT tokens
    • Minting NFTs
    • Burning NFTs
    • Transfering NFTs
    • Wiping NFTs
    • Query NFT information
  • Support for Custom Fees on tokens:
    • Setting custom fees on a token
    • Updating custom fees on an existing token

v2.0.8

Added

  • Sign on demand functionality which should improve performance slightly

Fixed

  • AccountBalance.tokenDecimals incorrectly using Long as the key in the map instead of TokenId. Since this was a major bug making tokenDecimals completely unusable, the change has been made directly on tokenDecimals instead of deprecating and adding another field.

v2.0.7

Added

  • Support for entity ID checksums which are validated whenever a request begins execution. This includes the IDs within the request, the account ID within the transaction ID, and query responses will contain entity IDs with a checksum for the network the query was executed on.
  • Node validation before execution
  • Null checks for most parameters to catch stray NullPointerException's

Fixed

  • RequestType missing UNCHECKED_SUBMIT for toString() and valueOf() methods.
  • FeeSchedules incorrectly serializing nulls causing NullPointerException

v2.0.6

Added

  • Add FeeSchedule type to allow a structured parse of file 0.0.111

  • Support for setting maxBackoff, maxAttempts, retryHandler, and completionHandler in TopicMessageQuery

  • Default logging behavior to TopicMessageQuery if an error handler or completion handler was not set

  • (Internal) CI is run significantly more often, and against previewnet and the master branch of hedera-services.

  • Expose tokenDecimals from AccountBalance

Fixed

  • TopicMessageQuery retry handling; this should retry on more gRPC errors

  • TopicMessageQuery max retry timeout; before this would could wait up to 4m with no feedback

  • Client should be more thread safe

v2.0.5

Added

  • Support memo for Tokens, Accounts, and Files.

Fixed

  • Scheduled transaction support: ScheduleCreateTransaction, ScheduleDeleteTransaction, and ScheduleSignTransaction
  • HMAC Calculation Does Not Include IV [NCC-E001154-010]
  • Non-Constant Time Lookup of Mnemonic Words [NCC-E001154-009]
  • Decreased CHUNK_SIZE 4096->1024 and increased default max chunks 10->20
  • Remove use of computeIfAbsent and putIfAbsent from JDK7 builds

Deprecated

  • new TransactionId(AccountId, Instant) - Use TransactionId.withValidStart() instead.

v2.0.5-beta.9

Fixed

  • TransferTransaction.addTokenTransfer() was correctly adding tokens
  • HMAC Calculation Does Not Include IV [NCC-E001154-010]
  • Non-Constant Time Lookup of Mnemonic Words [NCC-E001154-009]
  • Decreased CHUNK_SIZE 4096->1024 and increased default max chunks 10->20
  • Renamed ScheduleInfo.getTransaction() -> ScheduleInfo.getScheduledTransaction()

v2.0.5-beta.8

Fixed

  • Remove use of computeIfAbsent and putIfAbsent from JDK7 builds

v2.0.5-beta.7

Fixed

  • Scheduled transactions should use new HAPI protobufs
  • ReceiptPrecheckException should be thrown when the erroring status was in the TransactionReceipt
  • Removed nonce from TransactionId
  • Transaction[Receipt|Record]Query should not error for status IDENTICAL_SCHEDULE_ALREADY_CREATED because the other fields on the receipt are present with that status.
  • ScheduleMultiSigExample should use updated scheduled transaction API

Removed

  • ScheduleCreateTransaction.addScheduledSignature()
  • ScheduleCreateTransaction.getScheduledSignatures()
  • ScheduleSignTransaction.addScheduledSignature()
  • ScheduleSignTransaction.getScheduledSignatures()

v2.0.5-beta.6

Added

  • Support for old proto.Transaction raw bytes in Transaction.fromBytes()

v2.0.5-beta.5

Added

  • TransactionRecord.scheduleRef - Reference to the scheduled transaction
  • TransactionReceipt.scheduledTransactionId
  • ScheduleInfo.scheduledTransactionId
  • Feature to copy TransactionId of a transaction being scheduled to the parent ScheduleCreateTransaction if one is set.

Fixed

  • TransactionId.toBytes() should support nonce if set
  • TransactionId.fromBytes() should support nonce if set

v2.0.5-beta.4

Added

  • Support memo for Tokens, Accounts, and Files.
  • TransactionId.fromString() should support nonce and scheduled.

v2.0.5-beta.3

Changed

  • TransactionId.toString() will append ?scheduled for scheduled transaction IDs, and transaction IDs created from nonce will print in hex.

Added

  • Support for scheduled and nonce in TransactionId
    • TransactionId.withNonce() - Supports creating transaction ID with random bytes.
    • TransactionId.[set|get]Scheduled() - Supports scheduled transaction IDs.
  • TransactionId.withValidStart()

Fixed

  • ScheduleCreateTransaction.setTransaction() and Transaction.schedule() not correctly setting existing signatures.

Deprecated

  • new TransactionId(AccountId, Instant) - Use TransactionId.withValidStart() instead.

v2.0.5-beta.2

Fixed

  • Schedule[Create|Sign]Transaction.addScheduleSignature() didn't save added signatures correctly.

v2.0.5-beta.1

Added

  • Support for scheduled transactions.
    • ScheduleCreateTransaction - Create a new scheduled transaction
    • ScheduleSignTransaction - Sign an existing scheduled transaction on the network
    • ScheduleDeleteTransaction - Delete a scheduled transaction
    • ScheduleInfoQuery - Query the info including bodyBytes of a scheduled transaction
    • ScheduleId

v2.0.2

Changes

  • Implement Client.forName() to support construction of client from network name.
  • Implement PrivateKey.verifyTransaction() to allow a user to verify a transaction was signed with a partiular key.
  • Rename HederaPreCheckStatusException to PrecheckStatusException and deprecate HederaPreCheckStatusException
  • Rename HederaReceipStatusException to ReceipStatusException and deprecate HederaReceipStatusException

v2.0.1

Bug Fixes

TokenCreateTransaction

  • long getAutoRenewPeriod() -> Duration getAutoRenewPeriod()
  • setAutoRenewPeriod(long) -> setAutoRenewPeriod(Duration)
  • long getExpirationTime() -> Instant getExpirationTime()
  • setExpirationTime(long) -> setExpirationTime(Instant)

TokenUpdateTransaction

  • long getAutoRenewPeriod() -> Duration getAutoRenewPeriod()
  • setAutoRenewPeriod(long) -> setAutoRenewPeriod(Duration)
  • long getExpirationTime() -> Instant getExpirationTime()
  • setExpirationTime(long) -> setExpirationTime(Instant)

TokenInfo

  • AccountId treasury() -> AccountId treasuryAccountId()
  • long autoRenewPeriod() -> Duration autoRenewPeriod()
  • long expirationTime() -> Instant expirationTime()

v2.0.0

General changes

  • No longer support the use of long for Hbar parameters. Meaning you can no longer do AccountCreateTransaction().setInitialBalance(5) and instead must AccountCreateTransaction().setInitialBalance(new Hbar(5)). This of course applies to more than just setInitialBalance().
  • Any method that used to require a PublicKey will now require Key.
    • AccountCreateTransaction.setKey(PublicKey) is now AccountCreateTransaction.setKey(Key) as an example.
  • All Id types (Account, File, Contract, Topic, and TransactionId)
    • Support fromBytes() and toBytes()
    • No longer have the toProto() method.
  • The use of Duration in the SDK will be either java.time.Duration or org.threeten.bp.Duration depending on which JDK and platform you're developing on.
  • The use of Instant in the SDK will be either java.time.Instant or org.threeten.bp.Instant depending on which JDK and platform you're developing on.
  • All transactions and queries will now attempt to execute on more than one node.
  • More getCostAsync and executeAsync variants
    • void executeAsync(Client)
    • Future executeAsync(Client, BiConsumer<O, T>)
    • void executeAsync(Client, Duration timeout, BiConsumer<O, T>)
    • void getCostAsync(Client)
    • Future getCostAsync(Client, BiConsumer<O, T>)
    • void getCostAsync(Client, Duration timeout, BiConsumer<O, T>)
  • Building different types from a protobuf type is no longer supported. Use fromBytes instead.
  • getSignatureCase() is no longer accessible
  • Field which were byte[] are now ByteString to prevent extra copy operation. This includes the response type of FileContentsQuery

Renamed Classes

  • ConsensusSubmitMessageTransaction -> MessageSubmitTransaction
  • ConsensusTopicCreateTransaction -> TopicCreateTransaction
  • ConsensusTopicDeleteTransaction -> TopicDeleteTransaction
  • ConsensusTopicUpdateTransaction -> TopicUpdateTransaction
  • ConsensusTopicId -> TopicId
  • Ed25519PublicKey -> PublicKey
  • Ed25519PrivateKey -> PrivateKey

Removed Classes

  • HederaNetworkException
  • MnemonicValidationResult
  • HederaConstants
  • ThresholdKey use KeyList.withThreshold() instead.

New Classes

  • LiveHash: Support for Hedera LiveHashes
  • Key: A common base for the signing authority or key entities in Hedera may have.

Client

Renamed

  • Client() -> Client.forNetwork()
  • Client.fromFile() -> Client.fromJsonFile()
  • Client.replaceNodes() -> Client.setNetwork()

PrivateKey

Changes

  • sign() no longer requires offset or length parameters

Removed

  • writePem()

PublicKey

Added

  • verify() verifies the message was signed by public key

Hbar

Renamed

  • as() -> to()
  • asTinybar() -> toTinybars()
  • fromTinybar() -> fromTinybars()

Added

  • negated()
  • getValue()

Removed

  • Hbar(BigDecimal, HbarUnit)
  • Hbar.from(long)
  • Hbar.from(BigDecimal)
  • Hbar.of()

KeyList

Added

  • KeyList.withThreshold()
  • size()
  • isEmpty()
  • contains()
  • containsAll()
  • iterator()
  • toArray()
  • remove()
  • removeAll()
  • retainAll()
  • clear()
  • toString()

Mnemonic

Renamed

  • Mnemonic(List<? extends CharSequence>) -> Mnemonic.fromWords() throws BadMnemonicException

ContractId

Added

  • ContractId(long)

Removed

  • toKeyProto()
  • implements PublicKey meaning it can no longer be used in place of a Key

FileId

Added

  • FileId(long)

Removed

  • fromSolidityAddress()
  • toSolidityAddress()

TransactionId

Added

  • TransactionId.withValidStart()
  • TransactionId.generate()

Transaction

Added

  • Transaction.hash()
  • Transaction.signWithOperator()

Removed

  • getReceipt()
  • getRecord()

QueryBuilder

Removed

  • toProto()
  • setPaymentTransaction()

TransactionBuilder

AccountInfo

Added

  • List<LiveHash> liveHashes

AccountDeleteTransaction

Renamed

  • setDeleteAccountId() -> setAccountId()
  • Removed addKey(), use setKeys(Key...) instead.

FileUpdateTransaction

  • Removed addKey(), use setKeys(Key...) instead.

v1.1.4

Added

  • Support for loading Ed25519 keys from encrypted PEM files (generated from OpenSSL).

  • Add a method to validate a mnemonic word list for accurate entry.

Fixed

  • Fixed TransactionReceiptQuery not waiting for consensus some times.

v1.1.3

Added

  • Add additional error classes to allow more introspection on errors:
    • HederaPrecheckStatusException - Thrown when the transaction fails at the node (the precheck)
    • HederaReceiptStatusException - Thrown when the receipt is checked and has a failing status. The error object contains the full receipt.
    • HederaRecordStatusException - Thrown when the record is checked and it has a failing status. The error object contains the full record.

Fixed

  • Add missing setTransferAccountId and setTransferContractId methods to ContractDeleteTransaction

  • Override executeAsync to sign by the operator (if not already)

Deprecated

  • Deprecate toSolidityAddress and fromSolidityAddress on FileId

v1.1.2

Fixed

v1.1.1

Fixed

v1.1.0

Added

Add support for Hedera Consensus Service (HCS).

  • Add ConsensusTopicCreateTransaction, ConsensusTopicUpdateTransaction, ConsensusTopicDeleteTransaction, and ConsensusMessageSubmitTransaction transactions

  • Add ConsensusTopicInfoQuery query (returns ConsensusTopicInfo)

  • Add MirrorClient and MirrorConsensusTopicQuery which can be used to listen for HCS messages from a mirror node

v1.0.0

Removed all deprecated APIs from v1.0.0.

Changed

  • Instead of returning ResponseCodeEnum from the generated protos, return a new Status type that wraps that and provides some Java conveniences.

  • Rename HederaException to HederaStatusException

  • Rename QueryBuilder.MaxPaymentExceededException to MaxQueryPaymentExceededException

  • Change AccountBalanceQuery to return Hbar (instead of Long)

  • Change ContractGetBytecodeQuery to return byte[] (instead of the internal proto type)

  • Remove GetBySolidityIdQuery. Instead, you should use AccountId.toSolidityAddress.

  • Change ContractRecordsQuery to return TransactionRecord[]

v0.9.0

Changed

All changes are not immediately breaking as the previous method still should exist and be working. The previous methods are flagged as deprecated and will be removed upon v1.0.

  • Transactions and queries do not take Client in the constructor; instead, Client is passed to execute.

  • Removed Transaction.executeForReceipt and Transaction.executeForRecord

    These methods have been identified as harmful as they hide too much. If one fails, you do not know if the transaction failed to execute; or, the receipt/record could not be retrieved. In a mission-critical application, that is, of course, an important distinction.

    Now there is only Transaction.execute which returns a TransactionId. If you don't care about waiting for consensus or retrieving a receipt/record in your application, you're done. Otherwise you can now use any TransactionId and ask for the receipt/record (with a stepped retry interval until consensus) with TransactionId.getReceipt and TransactionId.getRecord.

    v0.8.x and below

    AccountId newAccountId = new AccountCreateTransaction(hederaClient)
    .setKey(newKey.getPublicKey())
    .setInitialBalance(1000)
    .executeForReceipt() // TransactionReceipt
    .getAccountId();

    v0.9.x

    AccountId newAccountId = new AccountCreateTransaction()
    .setKey(newKey.getPublicKey())
    .setInitialBalance(1000)
    .execute(hederaClient) // TranactionId
    .getReceipt(hederaClient) // TransactionReceipt
    .getAccountId();

  • TransactionReceipt, AccountInfo, TransactionRecord, etc. now expose public final fields instead of getters (where possible and it makes sense).

  • Rename getCallResult and getCreateResult to getContractExecuteResult and getContractCreateResult for consistency

  • TransactionBuilder.setMemo is renamed to TransactionBuilder.setTransactionMemo to avoid confusion as there are 2 other kinds of memos on transactions

  • CallParams is removed in favor of ContractFunctionParams and closely mirrors type names from solidity

    • addInt32
    • addInt256Array
    • addString
    • etc.

  • ContractFunctionResult now closely mirrors the solidity type names

    • getInt32
    • etc.

  • setFunctionParams(params) on ContractCallQuery and ContractExecuteTransaction is now setFunction(name, params)

Added

  • TransactionId.getReceipt

  • TransactionId.getRecord

  • FileId.ADDRESS_BOOK, FileId.FEE_SCHEDULE, FileId.EXCHANGE_RATES

  • Experimental support for the Hedera Consensus Service (HCS). HCS is not yet generally available but if you have access the SDK can work with the current iteration of it. Due to its experimental nature, a system property must be set before use.

    System.setPropery("com.hedera.hashgraph.sdk.experimental", "true")

  • Client.forTestnet makes a new client configured to talk to TestNet (use .setOperator to set an operater)

  • Client.forMainnet makes a new client configured to talk to Mainnet (use .setOperator to set an operater)

Fixes

  • FileCreateTransaction sets a default expiration time; fixes AUTORENEW_DURATION_NOT_IN_RANGE.

  • BUSY is now internally retried in all cases.

  • The maximum query payment is now defaulted to 1 Hbar. By default, just before a query is executed we ask Hedera how much the query will cost and if it costs under the defined maximum, an exact payment is sent.

Removed

  • Transaction and Query types related to claims

v0.8.0

Fixes compatibility with Android.

Breaking Changes

  • The Key interface has been renamed to PublicKey
  • You are now required to depend on the gRPC transport dependency for your specific environment

Maven

<!-- SELECT ONE: -->
<!-- netty transport (for server or desktop applications) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-netty-shaded</artifactId>
  <version>1.24.0</version>
</dependency>
<!-- netty transport, unshaded (if you have a matching Netty dependency already) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-netty</artifactId>
  <version>1.24.0</version>
</dependency>
<!-- okhttp transport (for lighter-weight applications or Android) -->
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-okhttp</artifactId>
  <version>1.24.0</version>
</dependency>

Gradle

// SELECT ONE:
// netty transport (for high throughput applications)
implementation 'io.grpc:grpc-netty-shaded:1.24.0'
// netty transport, unshaded (if you have a matching Netty dependency already)
implementation 'io.grpc:grpc-netty:1.24.0'
// okhttp transport (for lighter-weight applications or Android)
implementation 'io.grpc:grpc-okhttp:1.24.0'