From 75a880390191aeaf7d2fa326f194349a891db022 Mon Sep 17 00:00:00 2001 From: Casey Rodarmor Date: Wed, 5 Aug 2015 11:22:14 -0400 Subject: [PATCH] Add v0.11.0 release notes --- doc/release-notes/release-notes-0.11.0.md | 505 ++++++++++++++++++++++ 1 file changed, 505 insertions(+) create mode 100644 doc/release-notes/release-notes-0.11.0.md diff --git a/doc/release-notes/release-notes-0.11.0.md b/doc/release-notes/release-notes-0.11.0.md new file mode 100644 index 000000000..28e49fb7e --- /dev/null +++ b/doc/release-notes/release-notes-0.11.0.md @@ -0,0 +1,505 @@ +Bitcoin Core version 0.11.0 is now available from: + + + +This is a new major version release, bringing both new features and +bug fixes. + +Please report bugs using the issue tracker at github: + + + +Upgrading and downgrading +========================= + +How to Upgrade +-------------- + +If you are running an older version, shut it down. Wait until it has completely +shut down (which might take a few minutes for older versions), then run the +installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or +bitcoind/bitcoin-qt (on Linux). + +Downgrade warning +------------------ + +Because release 0.10.0 and later makes use of headers-first synchronization and +parallel block download (see further), the block files and databases are not +backwards-compatible with pre-0.10 versions of Bitcoin Core or other software: + +* Blocks will be stored on disk out of order (in the order they are +received, really), which makes it incompatible with some tools or +other programs. Reindexing using earlier versions will also not work +anymore as a result of this. + +* The block index database will now hold headers for which no block is +stored on disk, which earlier versions won't support. + +If you want to be able to downgrade smoothly, make a backup of your entire data +directory. Without this your node will need start syncing (or importing from +bootstrap.dat) anew afterwards. It is possible that the data from a completely +synchronised 0.10 node may be usable in older versions as-is, but this is not +supported and may break as soon as the older version attempts to reindex. + +This does not affect wallet forward or backward compatibility. There are no +known problems when downgrading from 0.11.x to 0.10.x. + +Important information +====================== + +Transaction flooding +--------------------- + +At the time of this release, the P2P network is being flooded with low-fee +transactions. This causes a ballooning of the mempool size. + +If this growth of the mempool causes problematic memory use on your node, it is +possible to change a few configuration options to work around this. The growth +of the mempool can be monitored with the RPC command `getmempoolinfo`. + +One is to increase the minimum transaction relay fee `minrelaytxfee`, which +defaults to 0.00001. This will cause transactions with fewer BTC/kB fee to be +rejected, and thus fewer transactions entering the mempool. + +The other is to restrict the relaying of free transactions with +`limitfreerelay`. This option sets the number of kB/minute at which +free transactions (with enough priority) will be accepted. It defaults to 15. +Reducing this number reduces the speed at which the mempool can grow due +to free transactions. + +For example, add the following to `bitcoin.conf`: + + minrelaytxfee=0.00005 + limitfreerelay=5 + +More robust solutions are being worked on for a follow-up release. + +Notable changes +=============== + +Block file pruning +---------------------- + +This release supports running a fully validating node without maintaining a copy +of the raw block and undo data on disk. To recap, there are four types of data +related to the blockchain in the bitcoin system: the raw blocks as received over +the network (blk???.dat), the undo data (rev???.dat), the block index and the +UTXO set (both LevelDB databases). The databases are built from the raw data. + +Block pruning allows Bitcoin Core to delete the raw block and undo data once +it's been validated and used to build the databases. At that point, the raw data +is used only to relay blocks to other nodes, to handle reorganizations, to look +up old transactions (if -txindex is enabled or via the RPC/REST interfaces), or +for rescanning the wallet. The block index continues to hold the metadata about +all blocks in the blockchain. + +The user specifies how much space to allot for block & undo files. The minimum +allowed is 550MB. Note that this is in addition to whatever is required for the +block index and UTXO databases. The minimum was chosen so that Bitcoin Core will +be able to maintain at least 288 blocks on disk (two days worth of blocks at 10 +minutes per block). In rare instances it is possible that the amount of space +used will exceed the pruning target in order to keep the required last 288 +blocks on disk. + +Block pruning works during initial sync in the same way as during steady state, +by deleting block files "as you go" whenever disk space is allocated. Thus, if +the user specifies 550MB, once that level is reached the program will begin +deleting the oldest block and undo files, while continuing to download the +blockchain. + +For now, block pruning disables block relay. In the future, nodes with block +pruning will at a minimum relay "new" blocks, meaning blocks that extend their +active chain. + +Block pruning is currently incompatible with running a wallet due to the fact +that block data is used for rescanning the wallet and importing keys or +addresses (which require a rescan.) However, running the wallet with block +pruning will be supported in the near future, subject to those limitations. + +Block pruning is also incompatible with -txindex and will automatically disable +it. + +Once you have pruned blocks, going back to unpruned state requires +re-downloading the entire blockchain. To do this, re-start the node with +-reindex. Note also that any problem that would cause a user to reindex (e.g., +disk corruption) will cause a pruned node to redownload the entire blockchain. +Finally, note that when a pruned node reindexes, it will delete any blk???.dat +and rev???.dat files in the data directory prior to restarting the download. + +To enable block pruning on the command line: + +- `-prune=N`: where N is the number of MB to allot for raw block & undo data. + +Modified RPC calls: + +- `getblockchaininfo` now includes whether we are in pruned mode or not. +- `getblock` will check if the block's data has been pruned and if so, return an +error. +- `getrawtransaction` will no longer be able to locate a transaction that has a +UTXO but where its block file has been pruned. + +Pruning is disabled by default. + +Big endian support +-------------------- + +Experimental support for big-endian CPU architectures was added in this +release. All little-endian specific code was replaced with endian-neutral +constructs. This has been tested on at least MIPS and PPC hosts. The build +system will automatically detect the endianness of the target. + +Memory usage optimization +-------------------------- + +There have been many changes in this release to reduce the default memory usage +of a node, among which: + +- Accurate UTXO cache size accounting (#6102); this makes the option `-dbcache` + precise where this grossly underestimated memory usage before +- Reduce size of per-peer data structure (#6064 and others); this increases the + number of connections that can be supported with the same amount of memory +- Reduce the number of threads (#5964, #5679); lowers the amount of (esp. + virtual) memory needed + +Fee estimation changes +---------------------- + +This release improves the algorithm used for fee estimation. Previously, -1 +was returned when there was insufficient data to give an estimate. Now, -1 +will also be returned when there is no fee or priority high enough for the +desired confirmation target. In those cases, it can help to ask for an estimate +for a higher target number of blocks. It is not uncommon for there to be no +fee or priority high enough to be reliably (85%) included in the next block and +for this reason, the default for `-txconfirmtarget=n` has changed from 1 to 2. + +Privacy: Disable wallet transaction broadcast +---------------------------------------------- + +This release adds an option `-walletbroadcast=0` to prevent automatic +transaction broadcast and rebroadcast (#5951). This option allows separating +transaction submission from the node functionality. + +Making use of this, third-party scripts can be written to take care of +transaction (re)broadcast: + +- Send the transaction as normal, either through RPC or the GUI +- Retrieve the transaction data through RPC using `gettransaction` (NOT + `getrawtransaction`). The `hex` field of the result will contain the raw + hexadecimal representation of the transaction +- The transaction can then be broadcasted through arbitrary mechanisms + supported by the script + +One such application is selective Tor usage, where the node runs on the normal +internet but transactions are broadcasted over Tor. + +For an example script see [bitcoin-submittx](https://github.com/laanwj/bitcoin-submittx). + +Privacy: Stream isolation for Tor +---------------------------------- + +This release adds functionality to create a new circuit for every peer +connection, when the software is used with Tor. The new option, +`-proxyrandomize`, is on by default. + +When enabled, every outgoing connection will (potentially) go through a +different exit node. That significantly reduces the chance to get unlucky and +pick a single exit node that is either malicious, or widely banned from the P2P +network. This improves connection reliability as well as privacy, especially +for the initial connections. + +**Important note:** If a non-Tor SOCKS5 proxy is configured that supports +authentication, but doesn't require it, this change may cause that proxy to reject +connections. A user and password is sent where they weren't before. This setup +is exceedingly rare, but in this case `-proxyrandomize=0` can be passed to +disable the behavior. + +0.11.0 Change log +================= + +Detailed release notes follow. This overview includes changes that affect +behavior, not code moves, refactors and string updates. For convenience in locating +the code changes and accompanying discussion, both the pull request and +git merge commit are mentioned. + +### RPC and REST +- #5461 `5f7279a` signrawtransaction: validate private key +- #5444 `103f66b` Add /rest/headers//. +- #4964 `95ecc0a` Add scriptPubKey field to validateaddress RPC call +- #5476 `c986972` Add time offset into getpeerinfo output +- #5540 `84eba47` Add unconfirmed and immature balances to getwalletinfo +- #5599 `40e96a3` Get rid of the internal miner's hashmeter +- #5711 `87ecfb0` Push down RPC locks +- #5754 `1c4e3f9` fix getblocktemplate lock issue +- #5756 `5d901d8` Fix getblocktemplate_proposals test by mining one block +- #5548 `d48ce48` Add /rest/chaininfos +- #5992 `4c4f1b4` Push down RPC reqWallet flag +- #6036 `585b5db` Show zero value txouts in listunspent +- #5199 `6364408` Add RPC call `gettxoutproof` to generate and verify merkle blocks +- #5418 `16341cc` Report missing inputs in sendrawtransaction +- #5937 `40f5e8d` show script verification errors in signrawtransaction result +- #5420 `1fd2d39` getutxos REST command (based on Bip64) +- #6193 `42746b0` [REST] remove json input for getutxos, limit to query max. 15 outpoints +- #6226 `5901596` json: fail read_string if string contains trailing garbage + +### Configuration and command-line options +- #5636 `a353ad4` Add option `-allowselfsignedrootcertificate` to allow self signed root certs (for testing payment requests) +- #5900 `3e8a1f2` Add a consistency check `-checkblockindex` for the block chain data structures +- #5951 `7efc9cf` Make it possible to disable wallet transaction broadcast (using `-walletbroadcast=0`) +- #5911 `b6ea3bc` privacy: Stream isolation for Tor (on by default, use `-proxyrandomize=0` to disable) +- #5863 `c271304` Add autoprune functionality (`-prune=`) +- #6153 `0bcf04f` Parameter interaction: disable upnp if -proxy set +- #6274 `4d9c7fe` Add option `-alerts` to opt out of alert system + +### Block and transaction handling +- #5367 `dcc1304` Do all block index writes in a batch +- #5253 `203632d` Check against MANDATORY flags prior to accepting to mempool +- #5459 `4406c3e` Reject headers that build on an invalid parent +- #5481 `055f3ae` Apply AreSane() checks to the fees from the network +- #5580 `40d65eb` Preemptively catch a few potential bugs +- #5349 `f55c5e9` Implement test for merkle tree malleability in CPartialMerkleTree +- #5564 `a89b837` clarify obscure uses of EvalScript() +- #5521 `8e4578a` Reject non-final txs even in testnet/regtest +- #5707 `6af674e` Change hardcoded character constants to descriptive named constants for db keys +- #5286 `fcf646c` Change the default maximum OP_RETURN size to 80 bytes +- #5710 `175d86e` Add more information to errors in ReadBlockFromDisk +- #5948 `b36f1ce` Use GetAncestor to compute new target +- #5959 `a0bfc69` Add additional block index consistency checks +- #6058 `7e0e7f8` autoprune minor post-merge improvements +- #5159 `2cc1372` New fee estimation code +- #6102 `6fb90d8` Implement accurate UTXO cache size accounting +- #6129 `2a82298` Bug fix for clearing fCheckForPruning +- #5947 `e9af4e6` Alert if it is very likely we are getting a bad chain +- #6203 `c00ae64` Remove P2SH coinbase flag, no longer interesting +- #5985 `37b4e42` Fix removing of orphan transactions +- #6221 `6cb70ca` Prune: Support noncontiguous block files +- #6256 `fce474c` Use best header chain timestamps to detect partitioning +- #6233 `a587606` Advance pindexLastCommonBlock for blocks in chainActive + +### P2P protocol and network code +- #5507 `844ace9` Prevent DOS attacks on in-flight data structures +- #5770 `32a8b6a` Sanitize command strings before logging them +- #5859 `dd4ffce` Add correct bool combiner for net signals +- #5876 `8e4fd0c` Add a NODE_GETUTXO service bit and document NODE_NETWORK +- #6028 `b9311fb` Move nLastTry from CAddress to CAddrInfo +- #5662 `5048465` Change download logic to allow calling getdata on inbound peers +- #5971 `18d2832` replace absolute sleep with conditional wait +- #5918 `7bf5d5e` Use equivalent PoW for non-main-chain requests +- #6059 `f026ab6` chainparams: use SeedSpec6's rather than CAddress's for fixed seeds +- #6080 `31c0bf1` Add jonasschnellis dns seeder +- #5976 `9f7809f` Reduce download timeouts as blocks arrive +- #6172 `b4bbad1` Ignore getheaders requests when not synced +- #5875 `304892f` Be stricter in processing unrequested blocks +- #6333 `41bbc85` Hardcoded seeds update June 2015 + +### Validation +- #5143 `48e1765` Implement BIP62 rule 6 +- #5713 `41e6e4c` Implement BIP66 + +### Build system +- #5501 `c76c9d2` Add mips, mipsel and aarch64 to depends platforms +- #5334 `cf87536` libbitcoinconsensus: Add pkg-config support +- #5514 `ed11d53` Fix 'make distcheck' +- #5505 `a99ef7d` Build winshutdownmonitor.cpp on Windows only +- #5582 `e8a6639` Osx toolchain update +- #5684 `ab64022` osx: bump build sdk to 10.9 +- #5695 `23ef5b7` depends: latest config.guess and config.sub +- #5509 `31dedb4` Fixes when compiling in c++11 mode +- #5819 `f8e68f7` release: use static libstdc++ and disable reduced exports by default +- #5510 `7c3fbc3` Big endian support +- #5149 `c7abfa5` Add script to verify all merge commits are signed +- #6082 `7abbb7e` qt: disable qt tests when one of the checks for the gui fails +- #6244 `0401aa2` configure: Detect (and reject) LibreSSL +- #6269 `95aca44` gitian: Use the new bitcoin-detached-sigs git repo for OSX signatures +- #6285 `ef1d506` Fix scheduler build with some boost versions. +- #6280 `25c2216` depends: fix Boost 1.55 build on GCC 5 +- #6303 `b711599` gitian: add a gitian-win-signer descriptor +- #6246 `8ea6d37` Fix build on FreeBSD +- #6282 `daf956b` fix crash on shutdown when e.g. changing -txindex and abort action +- #6354 `bdf0d94` Gitian windows signing normalization + +### Wallet +- #2340 `811c71d` Discourage fee sniping with nLockTime +- #5485 `d01bcc4` Enforce minRelayTxFee on wallet created tx and add a maxtxfee option +- #5508 `9a5cabf` Add RandAddSeedPerfmon to MakeNewKey +- #4805 `8204e19` Do not flush the wallet in AddToWalletIfInvolvingMe(..) +- #5319 `93b7544` Clean up wallet encryption code +- #5831 `df5c246` Subtract fee from amount +- #6076 `6c97fd1` wallet: fix boost::get usage with boost 1.58 +- #5511 `23c998d` Sort pending wallet transactions before reaccepting +- #6126 `26e08a1` Change default nTxConfirmTarget to 2 +- #6183 `75a4d51` Fix off-by-one error w/ nLockTime in the wallet +- #6276 `c9fd907` Fix getbalance * 0 + +### GUI +- #5219 `f3af0c8` New icons +- #5228 `bb3c75b` HiDPI (retina) support for splash screen +- #5258 `73cbf0a` The RPC Console should be a QWidget to make window more independent +- #5488 `851dfc7` Light blue icon color for regtest +- #5547 `a39aa74` New icon for the debug window +- #5493 `e515309` Adopt style colour for button icons +- #5557 `70477a0` On close of splashscreen interrupt verifyDB +- #5559 `83be8fd` Make the command-line-args dialog better +- #5144 `c5380a9` Elaborate on signverify message dialog warning +- #5489 `d1aa3c6` Optimize PNG files +- #5649 `e0cd2f5` Use text-color icons for system tray Send/Receive menu entries +- #5651 `848f55d` Coin Control: Use U+2248 "ALMOST EQUAL TO" rather than a simple tilde +- #5626 `ab0d798` Fix icon sizes and column width +- #5683 `c7b22aa` add new osx dmg background picture +- #5620 `7823598` Payment request expiration bug fix +- #5729 `9c4a5a5` Allow unit changes for read-only BitcoinAmountField +- #5753 `0f44672` Add bitcoin logo to about screen +- #5629 `a956586` Prevent amount overflow problem with payment requests +- #5830 `215475a` Don't save geometry for options and about/help window +- #5793 `d26f0b2` Honor current network when creating autostart link +- #5847 `f238add` Startup script for centos, with documentation +- #5915 `5bd3a92` Fix a static qt5 crash when using certain versions of libxcb +- #5898 `bb56781` Fix rpc console font size to flexible metrics +- #5467 `bc8535b` Payment request / server work - part 2 +- #6161 `180c164` Remove movable option for toolbar +- #6160 `0d862c2` Overviewpage: make sure warning icons gets colored + +### Tests +- #5453 `2f2d337` Add ability to run single test manually to RPC tests +- #5421 `886eb57` Test unexecuted OP_CODESEPARATOR +- #5530 `565b300` Additional rpc tests +- #5611 `37b185c` Fix spurious windows test failures after 012598880c +- #5613 `2eda47b` Fix smartfees test for change to relay policy +- #5612 `e3f5727` Fix zapwallettxes test +- #5642 `30a5b5f` Prepare paymentservertests for new unit tests +- #5784 `e3a3cd7` Fix usage of NegateSignatureS in script_tests +- #5813 `ee9f2bf` Add unit tests for next difficulty calculations +- #5855 `d7989c0` Travis: run unit tests in different orders +- #5852 `cdae53e` Reinitialize state in between individual unit tests. +- #5883 `164d7b6` tests: add a BasicTestingSetup and apply to all tests +- #5940 `446bb70` Regression test for ResendWalletTransactions +- #6052 `cf7adad` fix and enable bip32 unit test +- #6039 `734f80a` tests: Error when setgenerate is used on regtest +- #6074 `948beaf` Correct the PUSHDATA4 minimal encoding test in script_invalid.json +- #6032 `e08886d` Stop nodes after RPC tests, even with --nocleanup +- #6075 `df1609f` Add additional script edge condition tests +- #5981 `da38dc6` Python P2P testing +- #5958 `9ef00c3` Add multisig rpc tests +- #6112 `fec5c0e` Add more script edge condition tests + +### Miscellaneous +- #5457, #5506, #5952, #6047 Update libsecp256k1 +- #5437 `84857e8` Add missing CAutoFile::IsNull() check in main +- #5490 `ec20fd7` Replace uint256/uint160 with opaque blobs where possible +- #5654, #5764 Adding jonasschnelli's GPG key +- #5477 `5f04d1d` OS X 10.10: LSSharedFileListItemResolve() is deprecated +- #5679 `beff11a` Get rid of DetectShutdownThread +- #5787 `9bd8c9b` Add fanquake PGP key +- #5366 `47a79bb` No longer check osx compatibility in RenameThread +- #5689 `07f4386` openssl: abstract out OPENSSL_cleanse +- #5708 `8b298ca` Add list of implemented BIPs +- #5809 `46bfbe7` Add bitcoin-cli man page +- #5839 `86eb461` keys: remove libsecp256k1 verification until it's actually supported +- #5749 `d734d87` Help messages correctly formatted (79 chars) +- #5884 `7077fe6` BUGFIX: Stack around the variable 'rv' was corrupted +- #5849 `41259ca` contrib/init/bitcoind.openrc: Compatibility with previous OpenRC init script variables +- #5950 `41113e3` Fix locale fallback and guard tests against invalid locale settings +- #5965 `7c6bfb1` Add git-subtree-check.sh script +- #6033 `1623f6e` FreeBSD, OpenBSD thread renaming +- #6064 `b46e7c2` Several changes to mruset +- #6104 `3e2559c` Show an init message while activating best chain +- #6125 `351f73e` Clean up parsing of bool command line args +- #5964 `b4c219b` Lightweight task scheduler +- #6116 `30dc3c1` [OSX] rename Bitcoin-Qt.app to Bitcoin-Core.app +- #6168 `b3024f0` contrib/linearize: Support linearization of testnet blocks +- #6098 `7708fcd` Update Windows resource files (and add one for bitcoin-tx) +- #6159 `e1412d3` Catch errors on datadir lock and pidfile delete +- #6186 `182686c` Fix two problems in CSubnet parsing +- #6174 `df992b9` doc: add translation strings policy +- #6210 `dfdb6dd` build: disable optional use of gmp in internal secp256k1 build +- #6264 `94cd705` Remove translation for -help-debug options +- #6286 `3902c15` Remove berkeley-db4 workaround in MacOSX build docs +- #6319 `3f8fcc9` doc: update mailing list address + +Credits +======= + +Thanks to everyone who directly contributed to this release: + +- 21E14 +- Adam Weiss +- Alex Morcos +- ayeowch +- azeteki +- Ben Holden-Crowther +- bikinibabe +- BitcoinPRReadingGroup +- Blake Jakopovic +- BtcDrak +- charlescharles +- Chris Arnesen +- Ciemon +- CohibAA +- Corinne Dashjr +- Cory Fields +- Cozz Lovan +- Daira Hopwood +- Daniel Kraft +- Dave Collins +- David A. Harding +- dexX7 +- Earlz +- Eric Lombrozo +- Eric R. Schulz +- Everett Forth +- Flavien Charlon +- fsb4000 +- Gavin Andresen +- Gregory Maxwell +- Heath +- Ivan Pustogarov +- Jacob Welsh +- Jameson Lopp +- Jason Lewicki +- Jeff Garzik +- Jonas Schnelli +- Jonathan Brown +- Jorge Timón +- joshr +- jtimon +- Julian Yap +- Luca Venturini +- Luke Dashjr +- Manuel Araoz +- MarcoFalke +- Matt Bogosian +- Matt Corallo +- Micha +- Michael Ford +- Mike Hearn +- mrbandrews +- Nicolas Benoit +- paveljanik +- Pavel Janík +- Pavel Vasin +- Peter Todd +- Philip Kaufmann +- Pieter Wuille +- pstratem +- randy-waterhouse +- rion +- Rob Van Mieghem +- Ross Nicoll +- Ruben de Vries +- sandakersmann +- Shaul Kfir +- Shawn Wilkinson +- sinetek +- Suhas Daftuar +- svost +- Thomas Zander +- Tom Harding +- UdjinM6 +- Vitalii Demianets +- Wladimir J. van der Laan + +And all those who contributed additional code review and/or security research: + +- Sergio Demian Lerner + +As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/). +