387 lines
18 KiB
Text
387 lines
18 KiB
Text
============================================================================
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User visible changes for btcwallet
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A wallet daemon for btcd, written in Go
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============================================================================
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Changes in 0.5.0 (Tue Mar 03 2015)
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- New features:
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- Add a new address manager package (waddrmgr) to replace the previous
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wallet/keystore package:
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- BIP0032 hierarchical deterministic keys
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- BIP0043/BIP0044 multi-account hierarchy
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- Strong focus on security:
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- Wallet master encryption keys protected by scrypt PBKDF
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- NaCl-based secretbox cryptography (XSalsa20 and Poly1305)
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- Mandatory encryption of private keys and P2SH redeeming scripts
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- Optional encryption of public data, including extended public keys
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and addresses
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- Different crypto keys for redeeming scripts to mitigate cryptanalysis
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- Hardened against memory scraping through the use of actively clearing
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private material from memory when locked
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- Different crypto keys used for public, private, and script data
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- Ability for different passphrases for public and private data
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- Multi-tier scalable key design to allow instant password changes
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regardless of the number of addresses stored
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- Import WIF keys
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- Import pay-to-script-hash scripts for things such as multi-signature
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transactions
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- Ability to export a watching-only version which does not contain any
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private key material
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- Programmatically detectable errors, including encapsulation of errors
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from packages it relies on
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- Address synchronization capabilities
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- Add a new namespaced database package (walletdb):
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- Key/value store
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- Namespace support
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- Allows multiple packages to have their own area in the database without
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worrying about conflicts
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- Read-only and read-write transactions with both manual and managed modes
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- Nested buckets
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- Supports registration of backend databases
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- Comprehensive test coverage
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- Replace the createencryptedwallet RPC with a wizard-style prompt
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(--create) to create a new walletdb-backed wallet file and import keys
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from the old Armory wallet file (if any)
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- Transaction creation changes:
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- Drop default transaction fee to 0.00001 BTC per kB
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- Use standard script flags provided by the txscript package for
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transaction creation and sanity checking
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- Randomize change output index
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- Includes amounts (total spendable, total needed, and fee) in all
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insufficient funds errors
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- Add support for simnet, the private simulation test network
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- Implement the following Bitcoin Core RPCs:
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- listreceivedbyaddress (#53)
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- lockunspent, listlockunspent (#50, #55)
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- getreceivedbyaddress
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- listreceivedbyaccount
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- Reimplement btcd RPCs which return the best block to use the block most
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recently processed by wallet to avoid confirmation races:
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- getbestblockhash
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- getblockcount
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- Perform clean shutdown on interrupt or when a stop RPC is received (#69)
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- Throttle the number of connected HTTP POST and websocket client
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connections (tunable using the rpcmaxclients and rpcmaxwebsockets config
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options)
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- Provide the ability to disable TLS when connecting to a localhost btcd or
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serving localhost clients
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- Rescan improvements:
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- Add a rescan notification for when the rescan has completed and no more
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rescan notifications are expected (#99)
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- Use the most recent partial sync height from a rescan progress
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notification when a rescan is restarted after the btcd connection is lost
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- Force a rescan if the transaction store cannot be opened (due to a
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missing file or if the deserialization failed)
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- RPC compatibility improvements:
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- Allow the use of the `*` account name to refer to all accounts
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- Make the account parameter optional for the getbalance and
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listalltransactions requests
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- Add iswatchonly field to the validateaddress response result
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- Check address equivalence in verifymessage by comparing pubkeys and pubkey
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hashes rather than requiring the address being verified to be one
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controlled by the wallet and using its private key for verification
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- Bug fixes:
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- Prevent an out-of-bounds panic when handling a gettransaction RPC.
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- Prevent a panic on client disconnect (#110).
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- Prevent double spending coins when creating multiple transactions at once
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by serializing access to the transaction creation logic (#120)
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- Mark unconfirmed transaction credits as spent when another unconfirmed
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transaction spends one (#91)
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- Exclude immature coinbase outputs from listunspent results (#103)
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- Fix several data and logic races during sync with btcd (#101)
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- Avoid a memory issue from incorrect slice usage which caused both
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duplicate and missing blocks in the transaction store when middle
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inserting transactions from a new block
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- Only spend P2PKH outputs when creating sendfrom/sendmany/sendtoaddress
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transactions (#89)
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- Return the correct UTXO set when fetching all wallet UTXOs by fixing an
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incorrect slice append
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- Remove a deadlock caused by filling the btcd notification channel (#100)
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- Avoid a confirmation race by using the most recently processed block in
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RPC handlers, rather than using the most recently notified block by btcd
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- Marshal empty JSON arrays as `[]` instead of the JSON `null` by using
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empty, non-nil Go slices
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- Flush logs and run all deferred functions before main returns and the
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process exits
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- Sync temporary transaction store flat file before closing and renaming
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- Accept hex strings with an odd number of characters
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- Notable developer-related changes:
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- Switch from the go.net websocket package to gorilla websockets
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- Refactor the RPC server:
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- Move several global variables to the rpcServer struct
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- Dynamically look up appropriate handlers for the current btcd connection
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status and wallet sync state
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- Begin creating websocket notifications by sending to one of many
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notification channels in the rpcServer struct, which are in turn
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marshalled and broadcast to each websocket client
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- Separate the RPC client code into the chain package:
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- Uses btcrpcclient for a btcd websocket RPC client
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- Converts all notification callbacks to typed messages sent over channels
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- Uses an unbounded queue for waiting notifications
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- Import a new voting pool package (votingpool):
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- Create and fetch voting pools and series from a walletdb namespace
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- Generate deposit addresses utilizing m-of-n multisig P2SH scripts
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- Improve transaction creation readability by splitting a monolithic
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function into several smaller ones
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- Check and handle all errors in some way, or explicitly comment why a
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particular error was left unchecked
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- Simplify RPC error handling by wrapping specific errors in unique types to
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create an appropriate btcjson error before the response is marshalled
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- Add a map of unspent outputs (keyed by outpoint) to the transaction store
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for quick lookup of any UTXO and access to the full wallet UTXO set
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without iterating over many transactions looking for unspent credits
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- Modify several data structures and function signatures have been modified
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to reduce the number of needed allocations and be more cache friendly
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- Miscellaneous:
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- Rewrite paths relative to the data directory when an alternate data
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directory is provided on the command line
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- Switch the websocket endpoint to `ws` to match btcd
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- Remove the getaddressbalance extension RPC to discourage address reuse and
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encourage watching for expected payments by using listunspent
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- Increase transaction creation performance by moving the sorting of
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transaction outputs by their amount out of an inner loop
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- Add additional logging to the transaction store:
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- Log each transaction added to the store
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- Log each previously unconfirmed transaction that is mined
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- [debug] Log which previous outputs are marked spent by a newly inserted
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debiting transaction
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- [debug] Log each transaction that is removed in a rollback
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- Only log rollbacks if transactions are reorged out of the old chain
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- Save logs to network-specific directories
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(e.g. ~/.btcwallet/logs/testnet3) to match btcd behavior (#114)
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Changes in 0.4.0 (Sun May 25 2014)
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- Implement the following standard bitcoin server RPC requests:
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- signmessage (https://github.com/conformal/btcwallet/issues/58)
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- verifymessage (https://github.com/conformal/btcwallet/issues/61)
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- listunspent (https://github.com/conformal/btcwallet/issues/54)
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- validateaddress (https://github.com/conformal/btcwallet/issues/60)
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- addressmultisig (https://github.com/conformal/btcwallet/issues/37)
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- createmultisig (https://github.com/conformal/btcwallet/issues/37)
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- signrawtransaction (https://github.com/conformal/btcwallet/issues/59)
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- Add authenticate extension RPC request to authenticate a websocket
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session without requiring the use of the HTTP Authorization header
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- Add btcdusername and btcdpassword options to allow separate
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authentication credentials from wallet clients when authenticating to a
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btcd websocket RPC server
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- Fix RPC response passthrough: JSON unmarshaling and marshaling is now
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delayed until necessary and JSON result objects from btcd are sent to
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clients directly without an extra decode+encode that may change the
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representation of large integer values
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- Fix several websocket client connection issues:
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- Disconnect clients are cleanly removed without hanging on any final
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sends
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- Set deadline for websocket client sends to prevent hanging on
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misbehaving clients or clients with a bad connection
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- Fix return result for dumprivkey by always padding the private key bytes
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to a length of 32
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- Fix rescan for transaction history for imported addresses
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(https://github.com/conformal/btcwallet/issues/74)
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- Fix listsinceblock request handler to consider the minimum confirmation
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parameter (https://github.com/conformal/btcwallet/issues/80)
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- Fix several RPC handlers which require an unlocked wallet to check
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for an unlocked wallet before continuing
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(https://github.com/conformal/btcwallet/issues/65)
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- Fix handling for block rewards (coinbase transactions):
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- Update listtransactions results to use "generate" category for
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coinbase outputs
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- Prevent inclusion of immature coinbase outputs for newly created
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transactions
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- Rewrite the transaction store to handle several issues regarding
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transation malleability and performance issues
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- The new transaction store is written to disk in a different format
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then before, and upgrades will require a rescan to rebuild the
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transaction history
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- Improve rescan:
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- Begin rescan with known UTXO set at start height
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- Serialize executation of all rescan requests
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- Merge waiting rescan jobs so all jobs can be handled with a single
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rescan
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- Support parially synced addresses in the keystore and incrementally
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mark rescan progress. If a rescan is unable to continue (wallet
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closes, btcd disconnects, etc.) a new rescan can start at the last
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synced chain height
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- Notify (with an unsolicited notification) websocket clients of btcd
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connection state
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- Improve logging:
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- Log reason for disconnecting a websocket client
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- Updates for btcd websocket API changes
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- Stability fixes, internal API changes, general code cleanup, and comment
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corrections
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Changes in 0.3.0 (Mon Feb 10 2014)
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- Use correct hash algorithm for chained addresses (fixes a bug where
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address chaining was still deterministic, but forked from Armory and
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previous btcwallet implementations)
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- Change websocket endpoint to connect to btcd 0.6.0-alpha
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- Redo server implementation to serialize handling of client requests
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- Redo account locking to greatly reduce btcwallet lockups caused by
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incorrect mutex usage
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- Open all accounts, rather than just the default account, at startup
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- Generate new addresses using pubkey chaining if keypool is depleted and
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wallet is locked
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- Make maximum keypool size a configuration option (keypoolsize)
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- Add disallowfree configuration option (default false) to force adding
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the minimum fee to all outbound transactions
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- Implement the following standard bitcoin server RPC requests:
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- getinfo (https://github.com/conformal/btcwallet/issues/63)
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- getrawchangeaddress (https://github.com/conformal/btcwallet/issues/41)
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- getreceivedbyaccount (https://github.com/conformal/btcwallet/issues/42)
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- gettransaction (https://github.com/conformal/btcwallet/issues/44)
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- keypoolrefill (https://github.com/conformal/btcwallet/issues/48)
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- listsinceblock (https://github.com/conformal/btcwallet/issues/52)
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- sendtoaddress (https://github.com/conformal/btcwallet/issues/56)
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- Add empty (unimplemented) handlers for the following RPC requests so
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requests are not passed down to btcd:
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- getblocktemplate
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- getwork
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- stop
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- Add RPC extension request, exportwatchingwallet, to export an account
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with a watching-only wallet from an account with a hot wallet that
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may be used by a separate btcwallet instance
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- Require all account wallets to share the same passphrase
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- Change walletlock and walletpassphrase RPC requests to lock or unlock
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all account wallets
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- Allow opening accounts with watching-only wallets
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- Return txid for sendfrom RPC requests
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(https://github.com/conformal/btcwallet/issues/64)
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- Rescan imported private keys in background
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(https://github.com/conformal/btcwallet/issues/34)
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- Do not import duplicate private keys
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(https://github.com/conformal/btcwallet/issues/35)
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- Write all three account files for a new account, rather than just
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the wallet (https://github.com/conformal/btcwallet/issues/30)
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- Create any missing directories before writing autogenerated certificate
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pair
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- Fix rescanning of a new account's root address
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- Fix error in the wallet file serialization causing duplicate address
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encryption attempts
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- Fix issue calculating eligible transaction inputs caused by a bad
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confirmation check
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- Fix file locking issue on Windows caused by not closing files before
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renaming
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- Fix typos in README file
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Changes in 0.2.1 (Thu Jan 10 2014)
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- Fix a mutex issue which caused btcwallet to lockup on all
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RPC requests needing to read or write an account
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Changes in 0.2.0 (Thu Jan 09 2014)
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- Enable mainnet support (disabled by default, use --mainnet to enable)
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- Don't hardcode localhost btcd connections. Instead, add a --connect
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option to specify the hostname or address and port of a local or
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remote btcd instance
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(https://github.com/conformal/btcwallet/issues/1)
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- Remove --serverport port and replace with --listen. This option works
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just like btcd's --rpclisten and allows to specify the interfaces to
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listen for RPC connections
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- Require TLS and Basic HTTP authentication before wallet can be
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controlled over RPC
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- Refill keypool if wallet is unlocked and keypool is emptied
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- Detect and rollback saved tx/utxo info after btcd performs blockchain
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reorganizations while btcwallet was disconnected
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- Add support for the following standard bitcoin JSON-RPC calls:
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- dumpprivkey (https://github.com/conformal/btcwallet/issues/9)
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- getaccount
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- getaccountaddress
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- importprivkey (https://github.com/conformal/btcwallet/issues/2)
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- listtransactions (https://github.com/conformal/btcwallet/issues/12)
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- Add several extension RPC calls for websocket connections:
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- getaddressbalance: get the balance associated with a single address
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- getunconfirmedbalance: get total balance for unconfirmed transactions
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- listaddresstransactions: list transactions for a single address
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(https://github.com/conformal/btcwallet/issues/27)
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- listalltransactions: lists all transactions without specifying a range
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- Make RPC extensions available only to websocket connections, with the
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exception of createencryptedwallet
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- Add dummy handlers for unimplemented wallet RPC calls
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(https://github.com/conformal/btcwallet/issues/29)
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- Add socks5/tor proxy support
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- Calculate and add minimum transaction fee to created transactions
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- Use OS-specific rename calls to provide atomic file renames which
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can replace a currently-existing file
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(https://github.com/conformal/btcwallet/issues/20)
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- Move account files to a single directory per bitcoin network to
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prevent a future scaling issue
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(https://github.com/conformal/btcwallet/issues/16)
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- Fix several data races and mutex mishandling
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- Fix a bug where the RPC server hung on requests requiring btcd
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when a btcd connection was never established
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- Fix a bug where creating account files did not create all necessary
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directories (https://github.com/conformal/btcwallet/issues/15)
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- Fix a bug where '~' did not expand to a home or user directory
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(https://github.com/conformal/btcwallet/issues/17)
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- Fix a bug where returning account names as strings did not remove
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trailing ending 0s
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- Fix a bug where help usage was displayed twice using the -h or --help
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flag
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- Fix sample listening address in sample configuration file
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- Update sample configuration file with all available options with
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descriptions and defaults for each
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Initial Release 0.1.0 (Wed Nov 13 2013)
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- Initial release
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