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lbcd/CHANGES
Anirudha Bose 418f9204f4 Update CHANGES file for 0.22.0 release
2021-05-26 09:54:22 -04:00

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============================================================================
User visible changes for btcd
A full-node bitcoin implementation written in Go
============================================================================
Changes in 0.22.0 (Thu May 27 2021)
- Protocol and network-related changes:
- Add support for witness tx and block in notfound msg (#1625)
- Add support for receiving sendaddrv2 messages from a peer (#1670)
- Fix bug in peer package causing last block height to go backwards
(#1606)
- Add chain parameters for connecting to the public Signet network
(#1692, #1718)
- Crypto changes:
- Fix bug causing panic due to bad R and S signature components in
btcec.RecoverCompact (#1691)
- Set the name (secp256k1) in the CurveParams of the S256 curve
(#1565)
- Notable developer-related package changes:
- Remove unknown block version warning in the blockchain package,
due to false positives triggered by AsicBoost (#1463)
- Add chaincfg.RegisterHDKeyID function to populate HD key ID pairs
(#1617)
- Add new method mining.AddWitnessCommitment to add the witness
commitment as an OP_RETURN output within the coinbase transaction.
(#1716)
- RPC changes:
- Support Batch JSON-RPC in rpcclient and server (#1583)
- Add rpcclient method to invoke getdescriptorinfo JSON-RPC command
(#1578)
- Update the rpcserver handler for validateaddress JSON-RPC command to
have parity with the bitcoind 0.20.0 interface (#1613)
- Add rpcclient method to invoke getblockfilter JSON-RPC command
(#1579)
- Add signmessagewithprivkey JSON-RPC command in rpcserver (#1585)
- Add rpcclient method to invoke importmulti JSON-RPC command (#1579)
- Add watchOnly argument in rpcclient method to invoke
listtransactions JSON-RPC command (#1628)
- Update btcjson.ListTransactionsResult for compatibility with Bitcoin
Core 0.20.0 (#1626)
- Support nullable optional JSON-RPC parameters (#1594)
- Add rpcclient and server method to invoke getnodeaddresses JSON-RPC
command (#1590)
- Add rpcclient methods to invoke PSBT JSON-RPC commands (#1596)
- Add rpcclient method to invoke listsinceblock with the
include_watchonly parameter enabled (#1451)
- Add rpcclient method to invoke deriveaddresses JSON-RPC command
(#1631)
- Add rpcclient method to invoke getblocktemplate JSON-RPC command
(#1629)
- Add rpcclient method to invoke getaddressinfo JSON-RPC command
(#1633)
- Add rpcclient method to invoke getwalletinfo JSON-RPC command
(#1638)
- Fix error message in rpcserver when an unknown RPC command is
encountered (#1695)
- Fix error message returned by estimatefee when the number of blocks
exceeds the max depth (#1678)
- Update btcjson.GetBlockChainInfoResult to include new fields in
Bitcoin Core (#1676)
- Add ExtraHeaders in rpcclient.ConnConfig struct (#1669)
- Fix bitcoind compatibility issue with the sendrawtransaction
JSON-RPC command (#1659)
- Add new JSON-RPC errors to btcjson package, and documented them
(#1648)
- Add rpcclient method to invoke createwallet JSON-RPC command
(#1650)
- Add rpcclient methods to invoke backupwallet, dumpwallet, loadwallet
and unloadwallet JSON-RPC commands (#1645)
- Fix unmarshalling error in getmininginfo JSON-RPC command, for valid
integers in scientific notation (#1644)
- Add rpcclient method to invoke gettxoutsetinfo JSON-RPC command
(#1641)
- Add rpcclient method to invoke signrawtransactionwithwallet JSON-RPC
command (#1642)
- Add txid to getblocktemplate response of rpcserver (#1639)
- Fix monetary unit used in createrawtransaction JSON-RPC command in
rpcserver (#1614)
- Add rawtx field to btcjson.GetBlockVerboseTxResult to provide
backwards compatibility with older versions of Bitcoin Core (#1677)
- Misc changes:
- Update btcutil dependency (#1704)
- Add Dockerfile to build and run btcd on Docker (#1465)
- Rework documentation and publish on https://btcd.readthedocs.io (#1468)
- Add support for Go 1.15 (#1619)
- Add Go 1.14 as the minimum supported version of Golang (#1621)
- Contributors (alphabetical order):
- 10gic
- Andrew Tugarinov
- Anirudha Bose
- Appelberg-s
- Armando Ochoa
- Aurèle Oulès
- Calvin Kim
- Christian Lehmann
- Conner Fromknecht
- Dan Cline
- David Mazary
- Elliott Minns
- Federico Bond
- Friedger Müffke
- Gustavo Chain
- Hanjun Kim
- Henry Fisher
- Iskander Sharipov
- Jake Sylvestre
- Johan T. Halseth
- John C. Vernaleo
- Liran Sharir
- Mikael Lindlof
- Olaoluwa Osuntokun
- Oliver Gugger
- Rjected
- Steven Kreuzer
- Torkel Rogstad
- Tristyn
- Victor Lavaud
- Vinayak Borkar
- Wilmer Paulino
- Yaacov Akiba Slama
- ebiiim
- ipriver
- wakiyamap
- yyforyongyu
Changes in 0.21.0 (Thu Aug 27 2020)
- Network-related changes:
- Handle notfound messages from peers in netsync package (#1603)
- RPC changes:
- Add compatibility for getblock RPC changes in bitcoind 0.15.0 (#1529)
- Add new optional Params field to rpcclient.ConnConfig (#1467)
- Add new error code ErrRPCInWarmup in btcjson (#1541)
- Add compatibility for changes to getmempoolentry response in bitcoind
0.19.0 (#1524)
- Add rpcclient methods for estimatesmartfee and generatetoaddress
commands (#1500)
- Add rpcclient method for getblockstats command (#1500)
- Parse serialized transaction from createrawtransaction command using
both segwit, and legacy format (#1502)
- Support cookie-based authentication in rpcclient (#1460)
- Add rpcclient method for getchaintxstats command (#1571)
- Add rpcclient method for fundrawtransaction command (#1553)
- Add rpcclient method for getbalances command (#1595)
- Add new method rpcclient.GetTransactionWatchOnly (#1592)
- Crypto changes:
- Fix panic in fieldVal.SetByteSlice when called with large values, and
improve the method to be 35% faster (#1602)
- btcctl changes:
- Add -regtest mode to btcctl (#1556)
- Misc changes:
- Fix a bug due to a deadlock in connmgr's dynamic ban scoring (#1509)
- Add blockchain.NewUtxoEntry() to directly create entries for
UtxoViewpoint (#1588)
- Replace LRU cache implementation in peer package with a generic one
from decred/dcrd (#1599)
- Contributors (alphabetical order):
- Anirudha Bose
- Antonin Hildebrand
- Dan Cline
- Daniel McNally
- David Hill
- Federico Bond
- George Tankersley
- Henry
- Henry Harder
- Iskander Sharipov
- Ivan Kuznetsov
- Jake Sylvestre
- Javed Khan
- JeremyRand
- Jin
- John C. Vernaleo
- Kulpreet Singh
- Mikael Lindlof
- Murray Nesbitt
- Nisen
- Olaoluwa Osuntokun
- Oliver Gugger
- Steven Roose
- Torkel Rogstad
- Tyler Chambers
- Wilmer Paulino
- Yash Bhutwala
- adiabat
- jalavosus
- mohanson
- qqjettkgjzhxmwj
- qshuai
- shuai.qi
- tpkeeper
Changes in v0.20.1 (Wed Nov 13 2019)
- RPC changes:
- Add compatibility for bitcoind v0.19.0 in rpcclient and btcjson
packages (#1484)
- Contributors (alphabetical order):
- Eugene Zeigel
- Olaoluwa Osuntokun
- Wilmer Paulino
Changes in v0.20.0 (Tue Oct 15 2019)
- Significant changes made since 0.12.0. See git log or refer to release
notes on GitHub for full details.
- Contributors (alphabetical order):
- Albert Puigsech Galicia
- Alex Akselrod
- Alex Bosworth
- Alex Manuskin
- Alok Menghrajani
- Anatoli Babenia
- Andy Weidenbaum
- Calvin McAnarney
- Chris Martin
- Chris Pacia
- Chris Shepherd
- Conner Fromknecht
- Craig Sturdy
- Cédric Félizard
- Daniel Krawisz
- Daniel Martí
- Daniel McNally
- Dario Nieuwenhuis
- Dave Collins
- David Hill
- David de Kloet
- GeertJohan
- Grace Noah
- Gregory Trubetskoy
- Hector Jusforgues
- Iskander (Alex) Sharipov
- Janus Troelsen
- Jasper
- Javed Khan
- Jeremiah Goyette
- Jim Posen
- Jimmy Song
- Johan T. Halseth
- John C. Vernaleo
- Jonathan Gillham
- Josh Rickmar
- Jon Underwood
- Jonathan Zeppettini
- Jouke Hofman
- Julian Meyer
- Kai
- Kamil Slowikowski
- Kefkius
- Leonardo Lazzaro
- Marco Peereboom
- Marko Bencun
- Mawueli Kofi Adzoe
- Michail Kargakis
- Mitchell Paull
- Nathan Bass
- Nicola 'tekNico' Larosa
- Olaoluwa Osuntokun
- Pedro Martelletto
- Ricardo Velhote
- Roei Erez
- Ruben de Vries
- Rune T. Aune
- Sad Pencil
- Shuai Qi
- Steven Roose
- Tadge Dryja
- Tibor Bősze
- Tomás Senart
- Tzu-Jung Lee
- Vadym Popov
- Waldir Pimenta
- Wilmer Paulino
- benma
- danda
- dskloet
- esemplastic
- jadeblaquiere
- nakagawa
- preminem
- qshuai
Changes in 0.12.0 (Fri Nov 20 2015)
- Protocol and network related changes:
- Add a new checkpoint at block height 382320 (#555)
- Implement BIP0065 which includes support for version 4 blocks, a new
consensus opcode (OP_CHECKLOCKTIMEVERIFY) that enforces transaction
lock times, and a double-threshold switchover mechanism (#535, #459,
#455)
- Implement BIP0111 which provides a new bloom filter service flag and
hence provides support for protocol version 70011 (#499)
- Add a new parameter --nopeerbloomfilters to allow disabling bloom
filter support (#499)
- Reject non-canonically encoded variable length integers (#507)
- Add mainnet peer discovery DNS seed (seed.bitcoin.jonasschnelli.ch)
(#496)
- Correct reconnect handling for persistent peers (#463, #464)
- Ignore requests for block headers if not fully synced (#444)
- Add CLI support for specifying the zone id on IPv6 addresses (#538)
- Fix a couple of issues where the initial block sync could stall (#518,
#229, #486)
- Fix an issue which prevented the --onion option from working as
intended (#446)
- Transaction relay (memory pool) changes:
- Require transactions to only include signatures encoded with the
canonical 'low-s' encoding (#512)
- Add a new parameter --minrelaytxfee to allow the minimum transaction
fee in BTC/kB to be overridden (#520)
- Retain memory pool transactions when they redeem another one that is
removed when a block is accepted (#539)
- Do not send reject messages for a transaction if it is valid but
causes an orphan transaction which depends on it to be determined
as invalid (#546)
- Refrain from attempting to add orphans to the memory pool multiple
times when the transaction they redeem is added (#551)
- Modify minimum transaction fee calculations to scale based on bytes
instead of full kilobyte boundaries (#521, #537)
- Implement signature cache:
- Provides a limited memory cache of validated signatures which is a
huge optimization when verifying blocks for transactions that are
already in the memory pool (#506)
- Add a new parameter '--sigcachemaxsize' which allows the size of the
new cache to be manually changed if desired (#506)
- Mining support changes:
- Notify getblocktemplate long polling clients when a block is pushed
via submitblock (#488)
- Speed up getblocktemplate by making use of the new signature cache
(#506)
- RPC changes:
- Implement getmempoolinfo command (#453)
- Implement getblockheader command (#461)
- Modify createrawtransaction command to accept a new optional parameter
'locktime' (#529)
- Modify listunspent result to include the 'spendable' field (#440)
- Modify getinfo command to include 'errors' field (#511)
- Add timestamps to blockconnected and blockdisconnected notifications
(#450)
- Several modifications to searchrawtranscations command:
- Accept a new optional parameter 'vinextra' which causes the results
to include information about the outputs referenced by a transaction's
inputs (#485, #487)
- Skip entries in the mempool too (#495)
- Accept a new optional parameter 'reverse' to return the results in
reverse order (most recent to oldest) (#497)
- Accept a new optional parameter 'filteraddrs' which causes the
results to only include inputs and outputs which involve the
provided addresses (#516)
- Change the notification order to notify clients about mined
transactions (recvtx, redeemingtx) before the blockconnected
notification (#449)
- Update verifymessage RPC to use the standard algorithm so it is
compatible with other implementations (#515)
- Improve ping statistics by pinging on an interval (#517)
- Websocket changes:
- Implement session command which returns a per-session unique id (#500,
#503)
- btcctl utility changes:
- Add getmempoolinfo command (#453)
- Add getblockheader command (#461)
- Add getwalletinfo command (#471)
- Notable developer-related package changes:
- Introduce a new peer package which acts a common base for creating and
concurrently managing bitcoin network peers (#445)
- Various cleanup of the new peer package (#528, #531, #524, #534,
#549)
- Blocks heights now consistently use int32 everywhere (#481)
- The BlockHeader type in the wire package now provides the BtcDecode
and BtcEncode methods (#467)
- Update wire package to recognize BIP0064 (getutxo) service bit (#489)
- Export LockTimeThreshold constant from txscript package (#454)
- Export MaxDataCarrierSize constant from txscript package (#466)
- Provide new IsUnspendable function from the txscript package (#478)
- Export variable length string functions from the wire package (#514)
- Export DNS Seeds for each network from the chaincfg package (#544)
- Preliminary work towards separating the memory pool into a separate
package (#525, #548)
- Misc changes:
- Various documentation updates (#442, #462, #465, #460, #470, #473,
#505, #530, #545)
- Add installation instructions for gentoo (#542)
- Ensure an error is shown if OS limits can't be set at startup (#498)
- Tighten the standardness checks for multisig scripts (#526)
- Test coverage improvement (#468, #494, #527, #543, #550)
- Several optimizations (#457, #474, #475, #476, #508, #509)
- Minor code cleanup and refactoring (#472, #479, #482, #519, #540)
- Contributors (alphabetical order):
- Ben Echols
- Bruno Clermont
- danda
- Daniel Krawisz
- Dario Nieuwenhuis
- Dave Collins
- David Hill
- Javed Khan
- Jonathan Gillham
- Joseph Becher
- Josh Rickmar
- Justus Ranvier
- Mawuli Adzoe
- Olaoluwa Osuntokun
- Rune T. Aune
Changes in 0.11.1 (Wed May 27 2015)
- Protocol and network related changes:
- Use correct sub-command in reject message for rejected transactions
(#436, #437)
- Add a new parameter --torisolation which forces new circuits for each
connection when using tor (#430)
- Transaction relay (memory pool) changes:
- Reduce the default number max number of allowed orphan transactions
to 1000 (#419)
- Add a new parameter --maxorphantx which allows the maximum number of
orphan transactions stored in the mempool to be specified (#419)
- RPC changes:
- Modify listtransactions result to include the 'involveswatchonly' and
'vout' fields (#427)
- Update getrawtransaction result to omit the 'confirmations' field
when it is 0 (#420, #422)
- Update signrawtransaction result to include errors (#423)
- btcctl utility changes:
- Add gettxoutproof command (#428)
- Add verifytxoutproof command (#428)
- Notable developer-related package changes:
- The btcec package now provides the ability to perform ECDH
encryption and decryption (#375)
- The block and header validation in the blockchain package has been
split to help pave the way toward concurrent downloads (#386)
- Misc changes:
- Minor peer optimization (#433)
- Contributors (alphabetical order):
- Dave Collins
- David Hill
- Federico Bond
- Ishbir Singh
- Josh Rickmar
Changes in 0.11.0 (Wed May 06 2015)
- Protocol and network related changes:
- **IMPORTANT: Update is required due to the following point**
- Correct a few corner cases in script handling which could result in
forking from the network on non-standard transactions (#425)
- Add a new checkpoint at block height 352940 (#418)
- Optimized script execution (#395, #400, #404, #409)
- Fix a case that could lead stalled syncs (#138, #296)
- Network address manager changes:
- Implement eclipse attack countermeasures as proposed in
http://cs-people.bu.edu/heilman/eclipse (#370, #373)
- Optional address indexing changes:
- Fix an issue where a reorg could cause an orderly shutdown when the
address index is active (#340, #357)
- Transaction relay (memory pool) changes:
- Increase maximum allowed space for nulldata transactions to 80 bytes
(#331)
- Implement support for the following rules specified by BIP0062:
- The S value in ECDSA signature must be at most half the curve order
(rule 5) (#349)
- Script execution must result in a single non-zero value on the stack
(rule 6) (#347)
- NOTE: All 7 rules of BIP0062 are now implemented
- Use network adjusted time in finalized transaction checks to improve
consistency across nodes (#332)
- Process orphan transactions on acceptance of new transactions (#345)
- RPC changes:
- Add support for a limited RPC user which is not allowed admin level
operations on the server (#363)
- Implement node command for more unified control over connected peers
(#79, #341)
- Implement generate command for regtest/simnet to support
deterministically mining a specified number of blocks (#362, #407)
- Update searchrawtransactions to return the matching transactions in
order (#354)
- Correct an issue with searchrawtransactions where it could return
duplicates (#346, #354)
- Increase precision of 'difficulty' field in getblock result to 8
(#414, #415)
- Omit 'nextblockhash' field from getblock result when it is empty
(#416, #417)
- Add 'id' and 'timeoffset' fields to getpeerinfo result (#335)
- Websocket changes:
- Implement new commands stopnotifyspent, stopnotifyreceived,
stopnotifyblocks, and stopnotifynewtransactions to allow clients to
cancel notification registrations (#122, #342)
- btcctl utility changes:
- A single dash can now be used as an argument to cause that argument to
be read from stdin (#348)
- Add generate command
- Notable developer-related package changes:
- The new version 2 btcjson package has now replaced the deprecated
version 1 package (#368)
- The btcec package now performs all signing using RFC6979 deterministic
signatures (#358, #360)
- The txscript package has been significantly cleaned up and had a few
API changes (#387, #388, #389, #390, #391, #392, #393, #395, #396,
#400, #403, #404, #405, #406, #408, #409, #410, #412)
- A new PkScriptLocs function has been added to the wire package MsgTx
type which provides callers that deal with scripts optimization
opportunities (#343)
- Misc changes:
- Minor wire hashing optimizations (#366, #367)
- Other minor internal optimizations
- Contributors (alphabetical order):
- Alex Akselrod
- Arne Brutschy
- Chris Jepson
- Daniel Krawisz
- Dave Collins
- David Hill
- Jimmy Song
- Jonas Nick
- Josh Rickmar
- Olaoluwa Osuntokun
- Oleg Andreev
Changes in 0.10.0 (Sun Mar 01 2015)
- Protocol and network related changes:
- Add a new checkpoint at block height 343185
- Implement BIP066 which includes support for version 3 blocks, a new
consensus rule which prevents non-DER encoded signatures, and a
double-threshold switchover mechanism
- Rather than announcing all known addresses on getaddr requests which
can possibly result in multiple messages, randomize the results and
limit them to the max allowed by a single message (1000 addresses)
- Add more reserved IP spaces to the address manager
- Transaction relay (memory pool) changes:
- Make transactions which contain reserved opcodes nonstandard
- No longer accept or relay free and low-fee transactions that have
insufficient priority to be mined in the next block
- Implement support for the following rules specified by BIP0062:
- ECDSA signature must use strict DER encoding (rule 1)
- The signature script must only contain push operations (rule 2)
- All push operations must use the smallest possible encoding (rule 3)
- All stack values interpreted as a number must be encoding using the
shortest possible form (rule 4)
- NOTE: Rule 1 was already enforced, however the entire script now
evaluates to false rather than only the signature verification as
required by BIP0062
- Allow transactions with nulldata transaction outputs to be treated as
standard
- Mining support changes:
- Modify the getblocktemplate RPC to generate and return block templates
for version 3 blocks which are compatible with BIP0066
- Allow getblocktemplate to serve blocks when the current time is
less than the minimum allowed time for a generated block template
(https://github.com/btcsuite/btcd/issues/209)
- Crypto changes:
- Optimize scalar multiplication by the base point by using a
pre-computed table which results in approximately a 35% speedup
(https://github.com/btcsuite/btcec/issues/2)
- Optimize general scalar multiplication by using the secp256k1
endomorphism which results in approximately a 17-20% speedup
(https://github.com/btcsuite/btcec/issues/1)
- Optimize general scalar multiplication by using non-adjacent form
which results in approximately an additional 8% speedup
(https://github.com/btcsuite/btcec/issues/3)
- Implement optional address indexing:
- Add a new parameter --addrindex which will enable the creation of an
address index which can be queried to determine all transactions which
involve a given address
(https://github.com/btcsuite/btcd/issues/190)
- Add a new logging subsystem for address index related operations
- Support new searchrawtransactions RPC
(https://github.com/btcsuite/btcd/issues/185)
- RPC changes:
- Require TLS version 1.2 as the minimum version for all TLS connections
- Provide support for disabling TLS when only listening on localhost
(https://github.com/btcsuite/btcd/pull/192)
- Modify help output for all commands to provide much more consistent
and detailed information
- Correct case in getrawtransaction which would refuse to serve certain
transactions with invalid scripts
(https://github.com/btcsuite/btcd/issues/210)
- Correct error handling in the getrawtransaction RPC which could lead
to a crash in rare cases
(https://github.com/btcsuite/btcd/issues/196)
- Update getinfo RPC to include the appropriate 'timeoffset' calculated
from the median network time
- Modify listreceivedbyaddress result type to include txids field so it
is compatible
- Add 'iswatchonly' field to validateaddress result
- Add 'startingpriority' and 'currentpriority' fields to getrawmempool
(https://github.com/btcsuite/btcd/issues/178)
- Don't omit the 'confirmations' field from getrawtransaction when it is
zero
- Websocket changes:
- Modify the behavior of the rescan command to automatically register
for notifications about transactions paying to rescanned addresses
or spending outputs from the final rescan utxo set when the rescan
is through the best block in the chain
- btcctl utility changes:
- Make the list of commands available via the -l option rather than
dumping the entire list on usage errors
- Alphabetize and categorize the list of commands by chain and wallet
- Make the help option only show the help options instead of also
dumping all of the commands
- Make the usage syntax much more consistent and correct a few cases of
misnamed fields
(https://github.com/btcsuite/btcd/issues/305)
- Improve usage errors to show the specific parameter number, reason,
and error code
- Only show the usage for specific command is shown when a valid command
is provided with invalid parameters
- Add support for a SOCK5 proxy
- Modify output for integer fields (such as timestamps) to display
normally instead in scientific notation
- Add invalidateblock command
- Add reconsiderblock command
- Add createnewaccount command
- Add renameaccount command
- Add searchrawtransactions command
- Add importaddress command
- Add importpubkey command
- showblock utility changes:
- Remove utility in favor of the RPC getblock method
- Notable developer-related package changes:
- Many of the core packages have been relocated into the btcd repository
(https://github.com/btcsuite/btcd/issues/214)
- A new version of the btcjson package that has been completely
redesigned from the ground up based based upon how the project has
evolved and lessons learned while using it since it was first written
is now available in the btcjson/v2/btcjson directory
- This will ultimately replace the current version so anyone making
use of this package will need to update their code accordingly
- The btcec package now provides better facilities for working directly
with its public and private keys without having to mix elements from
the ecdsa package
- Update the script builder to ensure all rules specified by BIP0062 are
adhered to when creating scripts
- The blockchain package now provides a MedianTimeSource interface and
concrete implementation for providing time samples from remote peers
and using that data to calculate an offset against the local time
- Misc changes:
- Fix a slow memory leak due to tickers not being stopped
(https://github.com/btcsuite/btcd/issues/189)
- Fix an issue where a mix of orphans and SPV clients could trigger a
condition where peers would no longer be served
(https://github.com/btcsuite/btcd/issues/231)
- The RPC username and password can now contain symbols which previously
conflicted with special symbols used in URLs
- Improve handling of obtaining random nonces to prevent cases where it
could error when not enough entropy was available
- Improve handling of home directory creation errors such as in the case
of unmounted symlinks (https://github.com/btcsuite/btcd/issues/193)
- Improve the error reporting for rejected transactions to include the
inputs which are missing and/or being double spent
- Update sample config file with new options and correct a comment
regarding the fact the RPC server only listens on localhost by default
(https://github.com/btcsuite/btcd/issues/218)
- Update the continuous integration builds to run several tools which
help keep code quality high
- Significant amount of internal code cleanup and improvements
- Other minor internal optimizations
- Code Contributors (alphabetical order):
- Beldur
- Ben Holden-Crowther
- Dave Collins
- David Evans
- David Hill
- Guilherme Salgado
- Javed Khan
- Jimmy Song
- John C. Vernaleo
- Jonathan Gillham
- Josh Rickmar
- Michael Ford
- Michail Kargakis
- kac
- Olaoluwa Osuntokun
Changes in 0.9.0 (Sat Sep 20 2014)
- Protocol and network related changes:
- Add a new checkpoint at block height 319400
- Add support for BIP0037 bloom filters
(https://github.com/conformal/btcd/issues/132)
- Implement BIP0061 reject handling and hence support for protocol
version 70002 (https://github.com/conformal/btcd/issues/133)
- Add testnet DNS seeds for peer discovery (testnet-seed.alexykot.me
and testnet-seed.bitcoin.schildbach.de)
- Add mainnet DNS seed for peer discovery (seeds.bitcoin.open-nodes.org)
- Make multisig transactions with non-null dummy data nonstandard
(https://github.com/conformal/btcd/issues/131)
- Make transactions with an excessive number of signature operations
nonstandard
- Perform initial DNS lookups concurrently which allows connections
more quickly
- Improve the address manager to significantly reduce memory usage and
add tests
- Remove orphan transactions when they appear in a mined block
(https://github.com/conformal/btcd/issues/166)
- Apply incremental back off on connection retries for persistent peers
that give invalid replies to mirror the logic used for failed
connections (https://github.com/conformal/btcd/issues/103)
- Correct rate-limiting of free and low-fee transactions
- Mining support changes:
- Implement getblocktemplate RPC with the following support:
(https://github.com/conformal/btcd/issues/124)
- BIP0022 Non-Optional Sections
- BIP0022 Long Polling
- BIP0023 Basic Pool Extensions
- BIP0023 Mutation coinbase/append
- BIP0023 Mutations time, time/increment, and time/decrement
- BIP0023 Mutation transactions/add
- BIP0023 Mutations prevblock, coinbase, and generation
- BIP0023 Block Proposals
- Implement built-in concurrent CPU miner
(https://github.com/conformal/btcd/issues/137)
NOTE: CPU mining on mainnet is pointless. This has been provided
for testing purposes such as for the new simulation test network
- Add --generate flag to enable CPU mining
- Deprecate the --getworkkey flag in favor of --miningaddr which
specifies which addresses generated blocks will choose from to pay
the subsidy to
- RPC changes:
- Implement gettxout command
(https://github.com/conformal/btcd/issues/141)
- Implement validateaddress command
- Implement verifymessage command
- Mark getunconfirmedbalance RPC as wallet-only
- Mark getwalletinfo RPC as wallet-only
- Update getgenerate, setgenerate, gethashespersec, and getmininginfo
to return the appropriate information about new CPU mining status
- Modify getpeerinfo pingtime and pingwait field types to float64 so
they are compatible
- Improve disconnect handling for normal HTTP clients
- Make error code returns for invalid hex more consistent
- Websocket changes:
- Switch to a new more efficient websocket package
(https://github.com/conformal/btcd/issues/134)
- Add rescanfinished notification
- Modify the rescanprogress notification to include block hash as well
as height (https://github.com/conformal/btcd/issues/151)
- btcctl utility changes:
- Accept --simnet flag which automatically selects the appropriate port
and TLS certificates needed to communicate with btcd and btcwallet on
the simulation test network
- Fix createrawtransaction command to send amounts denominated in BTC
- Add estimatefee command
- Add estimatepriority command
- Add getmininginfo command
- Add getnetworkinfo command
- Add gettxout command
- Add lockunspent command
- Add signrawtransaction command
- addblock utility changes:
- Accept --simnet flag which automatically selects the appropriate port
and TLS certificates needed to communicate with btcd and btcwallet on
the simulation test network
- Notable developer-related package changes:
- Provide a new bloom package in btcutil which allows creating and
working with BIP0037 bloom filters
- Provide a new hdkeychain package in btcutil which allows working with
BIP0032 hierarchical deterministic key chains
- Introduce a new btcnet package which houses network parameters
- Provide new simnet network (--simnet) which is useful for private
simulation testing
- Enforce low S values in serialized signatures as detailed in BIP0062
- Return errors from all methods on the btcdb.Db interface
(https://github.com/conformal/btcdb/issues/5)
- Allow behavior flags to alter btcchain.ProcessBlock
(https://github.com/conformal/btcchain/issues/5)
- Provide a new SerializeSize API for blocks
(https://github.com/conformal/btcwire/issues/19)
- Several of the core packages now work with Google App Engine
- Misc changes:
- Correct an issue where the database could corrupt under certain
circumstances which would require a new chain download
- Slightly optimize deserialization
- Use the correct IP block for he.net
- Fix an issue where it was possible the block manager could hang on
shutdown
- Update sample config file so the comments are on a separate line
rather than the end of a line so they are not interpreted as settings
(https://github.com/conformal/btcd/issues/135)
- Correct an issue where getdata requests were not being properly
throttled which could lead to larger than necessary memory usage
- Always show help when given the help flag even when the config file
contains invalid entries
- General code cleanup and minor optimizations
Changes in 0.8.0-beta (Sun May 25 2014)
- Btcd is now Beta (https://github.com/conformal/btcd/issues/130)
- Add a new checkpoint at block height 300255
- Protocol and network related changes:
- Lower the minimum transaction relay fee to 1000 satoshi to match
recent reference client changes
(https://github.com/conformal/btcd/issues/100)
- Raise the maximum signature script size to support standard 15-of-15
multi-signature pay-to-sript-hash transactions with compressed pubkeys
to remain compatible with the reference client
(https://github.com/conformal/btcd/issues/128)
- Reduce max bytes allowed for a standard nulldata transaction to 40 for
compatibility with the reference client
- Introduce a new btcnet package which houses all of the network params
for each network (mainnet, testnet3, regtest) to ultimately enable
easier addition and tweaking of networks without needing to change
several packages
- Fix several script discrepancies found by reference client test data
- Add new DNS seed for peer discovery (seed.bitnodes.io)
- Reduce the max known inventory cache from 20000 items to 1000 items
- Fix an issue where unknown inventory types could lead to a hung peer
- Implement inventory rebroadcast handler for sendrawtransaction
(https://github.com/conformal/btcd/issues/99)
- Update user agent to fully support BIP0014
(https://github.com/conformal/btcwire/issues/10)
- Implement initial mining support:
- Add a new logging subsystem for mining related operations
- Implement infrastructure for creating block templates
- Provide options to control block template creation settings
- Support the getwork RPC
- Allow address identifiers to apply to more than one network since both
testnet3 and the regression test network unfortunately use the same
identifier
- RPC changes:
- Set the content type for HTTP POST RPC connections to application/json
(https://github.com/conformal/btcd/issues/121)
- Modified the RPC server startup so it only requires at least one valid
listen interface
- Correct an error path where it was possible certain errors would not
be returned
- Implement getwork command
(https://github.com/conformal/btcd/issues/125)
- Update sendrawtransaction command to reject orphans
- Update sendrawtransaction command to include the reason a transaction
was rejected
- Update getinfo command to populate connection count field
- Update getinfo command to include relay fee field
(https://github.com/conformal/btcd/issues/107)
- Allow transactions submitted with sendrawtransaction to bypass the
rate limiter
- Allow the getcurrentnet and getbestblock extensions to be accessed via
HTTP POST in addition to Websockets
(https://github.com/conformal/btcd/issues/127)
- Websocket changes:
- Rework notifications to ensure they are delivered in the order they
occur
- Rename notifynewtxs command to notifyreceived (funds received)
- Rename notifyallnewtxs command to notifynewtransactions
- Rename alltx notification to txaccepted
- Rename allverbosetx notification to txacceptedverbose
(https://github.com/conformal/btcd/issues/98)
- Add rescan progress notification
- Add recvtx notification
- Add redeemingtx notification
- Modify notifyspent command to accept an array of outpoints
(https://github.com/conformal/btcd/issues/123)
- Significantly optimize the rescan command to yield up to a 60x speed
increase
- btcctl utility changes:
- Add createencryptedwallet command
- Add getblockchaininfo command
- Add importwallet command
- Add addmultisigaddress command
- Add setgenerate command
- Accept --testnet and --wallet flags which automatically select
the appropriate port and TLS certificates needed to communicate
with btcd and btcwallet (https://github.com/conformal/btcd/issues/112)
- Allow path expansion from config file entries
(https://github.com/conformal/btcd/issues/113)
- Minor refactor simplify handling of options
- addblock utility changes:
- Improve logging by making it consistent with the logging provided by
btcd (https://github.com/conformal/btcd/issues/90)
- Improve several package APIs for developers:
- Add new amount type for consistently handling monetary values
- Add new coin selector API
- Add new WIF (Wallet Import Format) API
- Add new crypto types for private keys and signatures
- Add new API to sign transactions including script merging and hash
types
- Expose function to extract all pushed data from a script
(https://github.com/conformal/btcscript/issues/8)
- Misc changes:
- Optimize address manager shuffling to do 67% less work on average
- Resolve a couple of benign data races found by the race detector
(https://github.com/conformal/btcd/issues/101)
- Add IP address to all peer related errors to clarify which peer is the
cause (https://github.com/conformal/btcd/issues/102)
- Fix a UPNP case issue that prevented the --upnp option from working
with some UPNP servers
- Update documentation in the sample config file regarding debug levels
- Adjust some logging levels to improve debug messages
- Improve the throughput of query messages to the block manager
- Several minor optimizations to reduce GC churn and enhance speed
- Other minor refactoring
- General code cleanup
Changes in 0.7.0 (Thu Feb 20 2014)
- Fix an issue when parsing scripts which contain a multi-signature script
which require zero signatures such as testnet block
000000001881dccfeda317393c261f76d09e399e15e27d280e5368420f442632
(https://github.com/conformal/btcscript/issues/7)
- Add check to ensure all transactions accepted to mempool only contain
canonical data pushes (https://github.com/conformal/btcscript/issues/6)
- Fix an issue causing excessive memory consumption
- Significantly rework and improve the websocket notification system:
- Each client is now independent so slow clients no longer limit the
speed of other connected clients
- Potentially long-running operations such as rescans are now run in
their own handler and rate-limited to one operation at a time without
preventing simultaneous requests from the same client for the faster
requests or notifications
- A couple of scenarios which could cause shutdown to hang have been
resolved
- Update notifynewtx notifications to support all address types instead
of only pay-to-pubkey-hash
- Provide a --rpcmaxwebsockets option to allow limiting the number of
concurrent websocket clients
- Add a new websocket command notifyallnewtxs to request notifications
(https://github.com/conformal/btcd/issues/86) (thanks @flammit)
- Improve btcctl utility in the following ways:
- Add getnetworkhashps command
- Add gettransaction command (wallet-specific)
- Add signmessage command (wallet-specific)
- Update getwork command to accept
- Continue cleanup and work on implementing the RPC API:
- Implement getnettotals command
(https://github.com/conformal/btcd/issues/84)
- Implement networkhashps command
(https://github.com/conformal/btcd/issues/87)
- Update getpeerinfo to always include syncnode field even when false
- Remove help addenda for getpeerinfo now that it supports all fields
- Close standard RPC connections on auth failure
- Provide a --rpcmaxclients option to allow limiting the number of
concurrent RPC clients (https://github.com/conformal/btcd/issues/68)
- Include IP address in RPC auth failure log messages
- Resolve a rather harmless data races found by the race detector
(https://github.com/conformal/btcd/issues/94)
- Increase block priority size and max standard transaction size to 50k
and 100k, respectively (https://github.com/conformal/btcd/issues/71)
- Add rate limiting of free transactions to the memory pool to prevent
penny flooding (https://github.com/conformal/btcd/issues/40)
- Provide a --logdir option (https://github.com/conformal/btcd/issues/95)
- Change the default log file path to include the network
- Add a new ScriptBuilder interface to btcscript to support creation of
custom scripts (https://github.com/conformal/btcscript/issues/5)
- General code cleanup
Changes in 0.6.0 (Tue Feb 04 2014)
- Fix an issue when parsing scripts which contain invalid signatures that
caused a chain fork on block
0000000000000001e4241fd0b3469a713f41c5682605451c05d3033288fb2244
- Correct an issue which could lead to an error in removeBlockNode
(https://github.com/conformal/btcchain/issues/4)
- Improve addblock utility as follows:
- Check imported blocks against all chain rules and checkpoints
- Skip blocks which are already known so you can stop and restart the
import or start the import after you have already downloaded a portion
of the chain
- Correct an issue where the utility did not shutdown cleanly after
processing all blocks
- Add error on attempt to import orphan blocks
- Improve error handling and reporting
- Display statistics after input file has been fully processed
- Rework, optimize, and improve headers-first mode:
- Resuming the chain sync from any point before the final checkpoint
will now use headers-first mode
(https://github.com/conformal/btcd/issues/69)
- Verify all checkpoints as opposed to only the final one
- Reduce and bound memory usage
- Rollback to the last known good point when a header does not match a
checkpoint
- Log information about what is happening with headers
- Improve btcctl utility in the following ways:
- Add getaddednodeinfo command
- Add getnettotals command
- Add getblocktemplate command (wallet-specific)
- Add getwork command (wallet-specific)
- Add getnewaddress command (wallet-specific)
- Add walletpassphrasechange command (wallet-specific)
- Add walletlock command (wallet-specific)
- Add sendfrom command (wallet-specific)
- Add sendmany command (wallet-specific)
- Add settxfee command (wallet-specific)
- Add listsinceblock command (wallet-specific)
- Add listaccounts command (wallet-specific)
- Add keypoolrefill command (wallet-specific)
- Add getreceivedbyaccount command (wallet-specific)
- Add getrawchangeaddress command (wallet-specific)
- Add gettxoutsetinfo command (wallet-specific)
- Add listaddressgroupings command (wallet-specific)
- Add listlockunspent command (wallet-specific)
- Add listlock command (wallet-specific)
- Add listreceivedbyaccount command (wallet-specific)
- Add validateaddress command (wallet-specific)
- Add verifymessage command (wallet-specific)
- Add sendtoaddress command (wallet-specific)
- Continue cleanup and work on implementing the RPC API:
- Implement submitblock command
(https://github.com/conformal/btcd/issues/61)
- Implement help command
- Implement ping command
- Implement getaddednodeinfo command
(https://github.com/conformal/btcd/issues/78)
- Implement getinfo command
- Update getpeerinfo to support bytesrecv and bytessent
(https://github.com/conformal/btcd/issues/83)
- Improve and correct several RPC server and websocket areas:
- Change the connection endpoint for websockets from /wallet to /ws
(https://github.com/conformal/btcd/issues/80)
- Implement an alternative authentication for websockets so clients
such as javascript from browsers that don't support setting HTTP
headers can authenticate (https://github.com/conformal/btcd/issues/77)
- Add an authentication deadline for RPC connections
(https://github.com/conformal/btcd/issues/68)
- Use standard authentication failure responses for RPC connections
- Make automatically generated certificate more standard so it works
from client such as node.js and Firefox
- Correct some minor issues which could prevent the RPC server from
shutting down in an orderly fashion
- Make all websocket notifications require registration
- Change the data sent over websockets to text since it is JSON-RPC
- Allow connections that do not have an Origin header set
- Expose and track the number of bytes read and written per peer
(https://github.com/conformal/btcwire/issues/6)
- Correct an issue with sendrawtransaction when invoked via websockets
which prevented a minedtx notification from being added
- Rescan operations issued from remote wallets are no stopped when
the wallet disconnects mid-operation
(https://github.com/conformal/btcd/issues/66)
- Several optimizations related to fetching block information from the
database
- General code cleanup
Changes in 0.5.0 (Mon Jan 13 2014)
- Optimize initial block download by introducing a new mode which
downloads the block headers first (up to the final checkpoint)
- Improve peer handling to remove the potential for slow peers to cause
sluggishness amongst all peers
(https://github.com/conformal/btcd/issues/63)
- Fix an issue where the initial block sync could stall when the sync peer
disconnects (https://github.com/conformal/btcd/issues/62)
- Correct an issue where --externalip was doing a DNS lookup on the full
host:port instead of just the host portion
(https://github.com/conformal/btcd/issues/38)
- Fix an issue which could lead to a panic on chain switches
(https://github.com/conformal/btcd/issues/70)
- Improve btcctl utility in the following ways:
- Show getdifficulty output as floating point to 6 digits of precision
- Show all JSON object replies formatted as standard JSON
- Allow btcctl getblock to accept optional params
- Add getaccount command (wallet-specific)
- Add getaccountaddress command (wallet-specific)
- Add sendrawtransaction command
- Continue cleanup and work on implementing RPC API calls
- Update getrawmempool to support new optional verbose flag
- Update getrawtransaction to match the reference client
- Update getblock to support new optional verbose flag
- Update raw transactions to fully match the reference client including
support for all transaction types and address types
- Correct getrawmempool fee field to return BTC instead of Satoshi
- Correct getpeerinfo service flag to return 8 digit string so it
matches the reference client
- Correct verifychain to return a boolean
- Implement decoderawtransaction command
- Implement createrawtransaction command
- Implement decodescript command
- Implement gethashespersec command
- Allow RPC handler overrides when invoked via a websocket versus
legacy connection
- Add new DNS seed for peer discovery
- Display user agent on new valid peer log message
(https://github.com/conformal/btcd/issues/64)
- Notify wallet when new transactions that pay to registered addresses
show up in the mempool before being mined into a block
- Support a tor-specific proxy in addition to a normal proxy
(https://github.com/conformal/btcd/issues/47)
- Remove deprecated sqlite3 imports from utilities
- Remove leftover profile write from addblock utility
- Quite a bit of code cleanup and refactoring to improve maintainability
Changes in 0.4.0 (Thu Dec 12 2013)
- Allow listen interfaces to be specified via --listen instead of only the
port (https://github.com/conformal/btcd/issues/33)
- Allow listen interfaces for the RPC server to be specified via
--rpclisten instead of only the port
(https://github.com/conformal/btcd/issues/34)
- Only disable listening when --connect or --proxy are used when no
--listen interface are specified
(https://github.com/conformal/btcd/issues/10)
- Add several new standard transaction checks to transaction memory pool:
- Support nulldata scripts as standard
- Only allow a max of one nulldata output per transaction
- Enforce a maximum of 3 public keys in multi-signature transactions
- The number of signatures in multi-signature transactions must not
exceed the number of public keys
- The number of inputs to a signature script must match the expected
number of inputs for the script type
- The number of inputs pushed onto the stack by a redeeming signature
script must match the number of inputs consumed by the referenced
public key script
- When a block is connected, remove any transactions from the memory pool
which are now double spends as a result of the newly connected
transactions
- Don't relay transactions resurrected during a chain switch since
other peers will also be switching chains and therefore already know
about them
- Cleanup a few cases where rejected transactions showed as an error
rather than as a rejected transaction
- Ignore the default configuration file when --regtest (regression test
mode) is specified
- Implement TLS support for RPC including automatic certificate generation
- Support HTTP authentication headers for web sockets
- Update address manager to recognize and properly work with Tor
addresses (https://github.com/conformal/btcd/issues/36) and
(https://github.com/conformal/btcd/issues/37)
- Improve btcctl utility in the following ways:
- Add the ability to specify a configuration file
- Add a default entry for the RPC cert to point to the location
it will likely be in the btcd home directory
- Implement --version flag
- Provide a --notls option to support non-TLS configurations
- Fix a couple of minor races found by the Go race detector
- Improve logging
- Allow logging level to be specified on a per subsystem basis
(https://github.com/conformal/btcd/issues/48)
- Allow logging levels to be dynamically changed via RPC
(https://github.com/conformal/btcd/issues/15)
- Implement a rolling log file with a max of 10MB per file and a
rotation size of 3 which results in a max logging size of 30 MB
- Correct a minor issue with the rescanning websocket call
(https://github.com/conformal/btcd/issues/54)
- Fix a race with pushing address messages that could lead to a panic
(https://github.com/conformal/btcd/issues/58)
- Improve which external IP address is reported to peers based on which
interface they are connected through
(https://github.com/conformal/btcd/issues/35)
- Add --externalip option to allow an external IP address to be specified
for cases such as tor hidden services or advanced network configurations
(https://github.com/conformal/btcd/issues/38)
- Add --upnp option to support automatic port mapping via UPnP
(https://github.com/conformal/btcd/issues/51)
- Update Ctrl+C interrupt handler to properly sync address manager and
remove the UPnP port mapping (if needed)
- Continue cleanup and work on implementing RPC API calls
- Add importprivkey (import private key) command to btcctl
- Update getrawtransaction to provide addresses properly, support
new verbose param, and match the reference implementation with the
exception of MULTISIG (thanks @flammit)
- Update getblock with new verbose flag (thanks @flammit)
- Add listtransactions command to btcctl
- Add getbalance command to btcctl
- Add basic support for btcd to run as a native Windows service
(https://github.com/conformal/btcd/issues/42)
- Package addblock utility with Windows MSIs
- Add support for TravisCI (continuous build integration)
- Cleanup some documentation and usage
- Several other minor bug fixes and general code cleanup
Changes in 0.3.3 (Wed Nov 13 2013)
- Significantly improve initial block chain download speed
(https://github.com/conformal/btcd/issues/20)
- Add a new checkpoint at block height 267300
- Optimize most recently used inventory handling
(https://github.com/conformal/btcd/issues/21)
- Optimize duplicate transaction input check
(https://github.com/conformal/btcchain/issues/2)
- Optimize transaction hashing
(https://github.com/conformal/btcd/issues/25)
- Rework and optimize wallet listener notifications
(https://github.com/conformal/btcd/issues/22)
- Optimize serialization and deserialization
(https://github.com/conformal/btcd/issues/27)
- Add support for minimum transaction fee to memory pool acceptance
(https://github.com/conformal/btcd/issues/29)
- Improve leveldb database performance by removing explicit GC call
- Fix an issue where Ctrl+C was not always finishing orderly database
shutdown
- Fix an issue in the script handling for OP_CHECKSIG
- Impose max limits on all variable length protocol entries to prevent
abuse from malicious peers
- Enforce DER signatures for transactions allowed into the memory pool
- Separate the debug profile http server from the RPC server
- Rework of the RPC code to improve performance and make the code cleaner
- The getrawtransaction RPC call now properly checks the memory pool
before consulting the db (https://github.com/conformal/btcd/issues/26)
- Add support for the following RPC calls: getpeerinfo, getconnectedcount,
addnode, verifychain
(https://github.com/conformal/btcd/issues/13)
(https://github.com/conformal/btcd/issues/17)
- Implement rescan websocket extension to allow wallet rescans
- Use correct paths for application data storage for all supported
operating systems (https://github.com/conformal/btcd/issues/30)
- Add a default redirect to the http profiling page when accessing the
http profile server
- Add a new --cpuprofile option which can be used to generate CPU
profiling data on platforms that support it
- Several other minor performance optimizations
- Other minor bug fixes and general code cleanup
Changes in 0.3.2 (Tue Oct 22 2013)
- Fix an issue that could cause the download of the block chain to stall
(https://github.com/conformal/btcd/issues/12)
- Remove deprecated sqlite as an available database backend
- Close sqlite compile issue as sqlite has now been removed
(https://github.com/conformal/btcd/issues/11)
- Change default RPC ports to 8334 (mainnet) and 18334 (testnet)
- Continue cleanup and work on implementing RPC API calls
- Add support for the following RPC calls: getrawmempool,
getbestblockhash, decoderawtransaction, getdifficulty,
getconnectioncount, getpeerinfo, and addnode
- Improve the btcctl utility that is used to issue JSON-RPC commands
- Fix an issue preventing btcd from cleanly shutting down with the RPC
stop command
- Add a number of database interface tests to ensure backends implement
the expected interface
- Expose some additional information from btcscript to be used for
identifying "standard"" transactions
- Add support for plan9 - thanks @mischief
(https://github.com/conformal/btcd/pull/19)
- Other minor bug fixes and general code cleanup
Changes in 0.3.1-alpha (Tue Oct 15 2013)
- Change default database to leveldb
NOTE: This does mean you will have to redownload the block chain. Since we
are still in alpha, we didn't feel writing a converter was worth the time as
it would take away from more important issues at this stage
- Add a warning if there are multiple block chain databases of different types
- Fix issue with unexpected EOF in leveldb -- https://github.com/conformal/btcd/issues/18
- Fix issue preventing block 21066 on testnet -- https://github.com/conformal/btcchain/issues/1
- Fix issue preventing block 96464 on testnet -- https://github.com/conformal/btcscript/issues/1
- Optimize transaction lookups
- Correct a few cases of list removal that could result in improper cleanup
of no longer needed orphans
- Add functionality to increase ulimits on non-Windows platforms
- Add support for mempool command which allows remote peers to query the
transaction memory pool via the bitcoin protocol
- Clean up logging a bit
- Add a flag to disable checkpoints for developers
- Add a lot of useful debug logging such as message summaries
- Other minor bug fixes and general code cleanup
Initial Release 0.3.0-alpha (Sat Oct 05 2013):
- Initial release
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