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Diffstat (limited to 'doc/release-notes.md')
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diff --git a/doc/release-notes.md b/doc/release-notes.md index 0757cb5c60..3d4816ae9a 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -1,64 +1,128 @@ -(note: this is a temporary file, to be added-to by anybody, and moved to -release-notes at release time) +Bitcoin Core version 0.12.0 is now available from: + + <https://bitcoin.org/bin/bitcoin-core-0.12.0/> + +This is a new major version release, bringing new features and other improvements. + +Please report bugs using the issue tracker at github: + + <https://github.com/bitcoin/bitcoin/issues> + +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. Notable changes =============== -SSL support for RPC dropped ----------------------------- +Signature validation using libsecp256k1 +--------------------------------------- -SSL support for RPC, previously enabled by the option `rpcssl` has been dropped -from both the client and the server. This was done in preparation for removing -the dependency on OpenSSL for the daemon completely. +ECDSA signatures inside Bitcoin transactions now use validation using +[https://github.com/bitcoin/secp256k1](libsecp256k1) instead of OpenSSL. -Trying to use `rpcssl` will result in an error: +Depending on the platform, this means a significant speedup for raw signature +validation speed. The advantage is largest on x86_64, where validation is over +five times faster. In practice, this translates to a raw reindexing and new +block validation times that are less than half of what it was before. - Error: SSL mode for RPC (-rpcssl) is no longer supported. +Libsecp256k1 has undergone very extensive testing and validation. -If you are one of the few people that relies on this feature, a flexible -migration path is to use `stunnel`. This is an utility that can tunnel -arbitrary TCP connections inside SSL. On e.g. Ubuntu it can be installed with: +A side effect of this change is that libconsensus no longer depends on OpenSSL. - sudo apt-get install stunnel4 +Reduce upload traffic +--------------------- -Then, to tunnel a SSL connection on 28332 to a RPC server bound on localhost on port 18332 do: +A major part of the outbound traffic is caused by serving historic blocks to +other nodes in initial block download state. - stunnel -d 28332 -r 127.0.0.1:18332 -p stunnel.pem -P '' +It is now possible to reduce the total upload traffic via the `-maxuploadtarget` +parameter. This is *not* a hard limit but a threshold to minimize the outbound +traffic. When the limit is about to be reached, the uploaded data is cut by not +serving historic blocks (blocks older than one week). +Moreover, any SPV peer is disconnected when they request a filtered block. -It can also be set up system-wide in inetd style. +This option can be specified in MiB per day and is turned off by default +(`-maxuploadtarget=0`). +The recommended minimum is 144 * MAX_BLOCK_SIZE (currently 144MB) per day. -Another way to re-attain SSL would be to setup a httpd reverse proxy. This solution -would allow the use of different authentication, loadbalancing, on-the-fly compression and -caching. A sample config for apache2 could look like: +Whitelisted peers will never be disconnected, although their traffic counts for +calculating the target. - Listen 443 +A more detailed documentation about keeping traffic low can be found in +[/doc/reducetraffic.md](/doc/reducetraffic.md). - NameVirtualHost *:443 - <VirtualHost *:443> +Direct headers announcement (BIP 130) +------------------------------------- - SSLEngine On - SSLCertificateFile /etc/apache2/ssl/server.crt - SSLCertificateKeyFile /etc/apache2/ssl/server.key +Between compatible peers, BIP 130 direct headers announcement is used. This +means that blocks are advertized by announcing their headers directly, instead +of just announcing the hash. In a reorganization, all new headers are sent, +instead of just the new tip. This can often prevent an extra roundtrip before +the actual block is downloaded. - <Location /bitcoinrpc> - ProxyPass http://127.0.0.1:8332/ - ProxyPassReverse http://127.0.0.1:8332/ - # optional enable digest auth - # AuthType Digest - # ... +Memory pool limiting +-------------------- - # optional bypass bitcoind rpc basic auth - # RequestHeader set Authorization "Basic <hash>" - # get the <hash> from the shell with: base64 <<< bitcoinrpc:<password> - </Location> +Previous versions of Bitcoin Core had their mempool limited by checking +a transaction's fees against the node's minimum relay fee. There was no +upper bound on the size of the mempool and attackers could send a large +number of transactions paying just slighly more than the default minimum +relay fee to crash nodes with relatively low RAM. A temporary workaround +for previous versions of Bitcoin Core was to raise the default minimum +relay fee. - # Or, balance the load: - # ProxyPass / balancer://balancer_cluster_name +Bitcoin Core 0.12 will have a strict maximum size on the mempool. The +default value is 300 MB and can be configured with the `-maxmempool` +parameter. Whenever a transaction would cause the mempool to exceed +its maximum size, the transaction with the lowest feerate will be +evicted and the node's minimum relay fee will be increased to match +this feerate. The initial minimum relay fee is set to 1000 satoshis +per kB. - </VirtualHost> +Replace-by-fee transactions +--------------------------- -Random-cookie RPC authentication ---------------------------------- +It is now possible to replace transactions in the transaction memory pool of +Bitcoin Core 0.12 nodes. Bitcoin Core will only replace transactions which +have any of their inputs' `nSequence` number set to less than `0xffffffff - 1`. +Moreover, a replacement transaction may only be accepted when it pays +sufficient fee, as described in [BIP 125] +(https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki). + +RPC: Random-cookie RPC authentication +--------------------------------------- When no `-rpcpassword` is specified, the daemon now uses a special 'cookie' file for authentication. This file is generated with random content when the @@ -72,41 +136,8 @@ https://www.torproject.org/docs/tor-manual.html.en This allows running bitcoind without having to do any manual configuration. -Low-level RPC API changes --------------------------- - -- Monetary amounts can be provided as strings. This means that for example the - argument to sendtoaddress can be "0.0001" instead of 0.0001. This can be an - advantage if a JSON library insists on using a lossy floating point type for - numbers, which would be dangerous for monetary amounts. - -Option parsing behavior ------------------------ - -Command line options are now parsed strictly in the order in which they are -specified. It used to be the case that `-X -noX` ends up, unintuitively, with X -set, as `-X` had precedence over `-noX`. This is no longer the case. Like for -other software, the last specified value for an option will hold. - -`NODE_BLOOM` service bit ------------------------- - -Support for the `NODE_BLOOM` service bit, as described in [BIP -111](https://github.com/bitcoin/bips/blob/master/bip-0111.mediawiki), has been -added to the P2P protocol code. - -BIP 111 defines a service bit to allow peers to advertise that they support -bloom filters (such as used by SPV clients) explicitly. It also bumps the protocol -version to allow peers to identify old nodes which allow bloom filtering of the -connection despite lacking the new service bit. - -In this version, it is only enforced for peers that send protocol versions -`>=70011`. For the next major version it is planned that this restriction will be -removed. It is recommended to update SPV clients to check for the `NODE_BLOOM` -service bit for nodes that report versions newer than 70011. - -Any sequence of pushdatas in OP_RETURN outputs now allowed ----------------------------------------------------------- +Relay: Any sequence of pushdatas in OP_RETURN outputs now allowed +----------------------------------------------------------------- Previously OP_RETURN outputs with a payload were only relayed and mined if they had a single pushdata. This restriction has been lifted to allow any @@ -115,14 +146,19 @@ limit on OP_RETURN output size is now applied to the entire serialized scriptPubKey, 83 bytes by default. (the previous 80 byte default plus three bytes overhead) -Merkle branches removed from wallet ------------------------------------ +Relay: Priority transactions +---------------------------- -Previously, every wallet transaction stored a Merkle branch to prove its -presence in blocks. This wasn't being used for more than an expensive -sanity check. Since 0.12, these are no longer stored. When loading a -0.12 wallet into an older version, it will automatically rescan to avoid -failed checks. +Transactions that do not pay the minimum relay fee, are called "free +transactions" or priority transactions. Previous versions of Bitcoin +Core would relay and mine priority transactions depending on their +setting of `-limitfreerelay=<r>` (default: `r=15` kB per minute) and +`-blockprioritysize=<s>` (default: `50000` bytes of a block's +priority space). + +Priority code is planned to get moved out of from Bitcoin Core 0.13 +and the default block priority size has been set to `0` in Bitcoin Core +0.12. BIP65 - CHECKLOCKTIMEVERIFY --------------------------- @@ -169,98 +205,17 @@ a connection to Tor can be made. It can be configured with the `-listenonion`, `-torcontrol` and `-torpassword` settings. To show verbose debugging information, pass `-debug=tor`. -Replace-by-fee transactions ---------------------------- - -It is now possible to replace transactions in the transaction memory pool of -Bitcoin Core 0.12 nodes. Bitcoin Core will only replace transactions which -have any of their inputs' `nSequence` number set to less than `0xffffffff - 1`. -Moreover, a replacement transaction may only be accepted when it pays -sufficient fee, as described in [BIP 125] -(https://github.com/bitcoin/bips/blob/master/bip-0125.mediawiki). - - -Reduce upload traffic ---------------------- - -A major part of the outbound traffic is caused by serving historic blocks to -other nodes in initial block download state. - -It is now possible to reduce the total upload traffic via the `-maxuploadtarget` -parameter. This is *not* a hard limit but a threshold to minimize the outbound -traffic. When the limit is about to be reached, the uploaded data is cut by not -serving historic blocks (blocks older than one week). -Moreover, any SPV peer is disconnected when they request a filtered block. - -This option can be specified in MiB per day and is turned off by default -(`-maxuploadtarget=0`). -The recommended minimum is 144 * MAX_BLOCK_SIZE (currently 144MB) per day. - -Whitelisted peers will never be disconnected, although their traffic counts for -calculating the target. - -A more detailed documentation about keeping traffic low can be found in -[/doc/reducetraffic.md](/doc/reducetraffic.md). - -Signature validation using libsecp256k1 ---------------------------------------- - -ECDSA signatures inside Bitcoin transactions now use validation using -[https://github.com/bitcoin/secp256k1](libsecp256k1) instead of OpenSSL. - -Depending on the platform, this means a significant speedup for raw signature -validation speed. The advantage is largest on x86_64, where validation is over -five times faster. In practice, this translates to a raw reindexing and new -block validation times that are less than half of what it was before. - -Libsecp256k1 has undergone very extensive testing and validation. - -A side effect of this change is that libconsensus no longer depends on OpenSSL. - -Direct headers announcement (BIP 130) -------------------------------------- - -Between compatible peers, BIP 130 direct headers announcement is used. This -means that blocks are advertized by announcing their headers directly, instead -of just announcing the hash. In a reorganization, all new headers are sent, -instead of just the new tip. This can often prevent an extra roundtrip before -the actual block is downloaded. - -Memory pool limiting --------------------------------- - -Previous versions of Bitcoin Core had their mempool limited by checking -a transaction's fees against the node's minimum relay fee. There was no -upper bound on the size of the mempool and attackers could send a large -number of transactions paying just slighly more than the default minimum -relay fee to crash nodes with relatively low RAM. A temporary workaround -for previous versions of Bitcoin Core was to raise the default minimum -relay fee. - -Bitcoin Core 0.12 will have a strict maximum size on the mempool. The -default value is 300 MB and can be configured with the `-maxmempool` -parameter. Whenever a transaction would cause the mempool to exceed -its maximum size, the transaction with the lowest feerate will be -evicted and the node's minimum relay fee will be increased to match -this feerate. The initial minimum relay fee is set to 1000 satoshis -per kB. +Notifications through ZMQ +------------------------- -Priority transactions ---------------------- - -Transactions that do not pay the minimum relay fee, are called "free -transactions" or priority transactions. Previous versions of Bitcoin -Core would relay and mine priority transactions depending on their -setting of `-limitfreerelay=<r>` (default: `r=15` kB per minute) and -`-blockprioritysize=<s>` (default: `50000` bytes of a block's -priority space). - -Priority code is planned to get moved out of from Bitcoin Core 0.13 -and the default block priority size has been set to `0` in Bitcoin Core -0.12. +Bitcoind can now (optionally) asynchronously notify clients through a +ZMQ-based PUB socket of the arrival of new transactions and blocks. +This feature requires installation of the ZMQ C API library 4.x and +configuring its use through the command line or configuration file. +Please see docs/zmq.md for details of operation. -Wallet transaction fees ------------------------ +Wallet: Transaction fees +------------------------ Various improvements have been made to how the wallet calculates transaction fees. @@ -285,8 +240,8 @@ the current minimum relay fee. Finally, a user can set the minimum fee rate for all transactions with `-mintxfee=<i>`, which defaults to 1000 satoshis per kB. -Negative confirmations and conflict detection ---------------------------------------------- +Wallet: Negative confirmations and conflict detection +----------------------------------------------------- The wallet will now report a negative number for confirmations that indicates how deep in the block chain the conflict is found. For example, if a transaction @@ -303,20 +258,50 @@ however. The new "trusted" field in the `listtransactions` RPC output indicates whether outputs of an unconfirmed transaction are considered spendable. -0.12.0 Change log -================= +Wallet: Merkle branches removed +------------------------------- -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. +Previously, every wallet transaction stored a Merkle branch to prove its +presence in blocks. This wasn't being used for more than an expensive +sanity check. Since 0.12, these are no longer stored. When loading a +0.12 wallet into an older version, it will automatically rescan to avoid +failed checks. -### RPC and REST +`NODE_BLOOM` service bit +------------------------ + +Support for the `NODE_BLOOM` service bit, as described in [BIP +111](https://github.com/bitcoin/bips/blob/master/bip-0111.mediawiki), has been +added to the P2P protocol code. + +BIP 111 defines a service bit to allow peers to advertise that they support +bloom filters (such as used by SPV clients) explicitly. It also bumps the protocol +version to allow peers to identify old nodes which allow bloom filtering of the +connection despite lacking the new service bit. + +In this version, it is only enforced for peers that send protocol versions +`>=70011`. For the next major version it is planned that this restriction will be +removed. It is recommended to update SPV clients to check for the `NODE_BLOOM` +service bit for nodes that report versions newer than 70011. + +Option parsing behavior +----------------------- -- **Asm representations of scriptSig signatures now contain SIGHASH type decodes** +Command line options are now parsed strictly in the order in which they are +specified. It used to be the case that `-X -noX` ends up, unintuitively, with X +set, as `-X` had precedence over `-noX`. This is no longer the case. Like for +other software, the last specified value for an option will hold. -The `asm` property of each scriptSig now contains the decoded signature hash -type for each signature that provides a valid defined hash type. +RPC: Low-level API changes +-------------------------- + +- Monetary amounts can be provided as strings. This means that for example the + argument to sendtoaddress can be "0.0001" instead of 0.0001. This can be an + advantage if a JSON library insists on using a lossy floating point type for + numbers, which would be dangerous for monetary amounts. + +* The `asm` property of each scriptSig now contains the decoded signature hash + type for each signature that provides a valid defined hash type. The following items contain assembly representations of scriptSig signatures and are affected by this change: @@ -339,30 +324,466 @@ now shows as: Note that the output of the RPC `decodescript` did not change because it is configured specifically to process scriptPubKey and not scriptSig scripts. +RPC: SSL support dropped +---------------------------- + +SSL support for RPC, previously enabled by the option `rpcssl` has been dropped +from both the client and the server. This was done in preparation for removing +the dependency on OpenSSL for the daemon completely. + +Trying to use `rpcssl` will result in an error: + + Error: SSL mode for RPC (-rpcssl) is no longer supported. + +If you are one of the few people that relies on this feature, a flexible +migration path is to use `stunnel`. This is an utility that can tunnel +arbitrary TCP connections inside SSL. On e.g. Ubuntu it can be installed with: + + sudo apt-get install stunnel4 + +Then, to tunnel a SSL connection on 28332 to a RPC server bound on localhost on port 18332 do: + + stunnel -d 28332 -r 127.0.0.1:18332 -p stunnel.pem -P '' + +It can also be set up system-wide in inetd style. + +Another way to re-attain SSL would be to setup a httpd reverse proxy. This solution +would allow the use of different authentication, loadbalancing, on-the-fly compression and +caching. A sample config for apache2 could look like: + + Listen 443 + + NameVirtualHost *:443 + <VirtualHost *:443> + + SSLEngine On + SSLCertificateFile /etc/apache2/ssl/server.crt + SSLCertificateKeyFile /etc/apache2/ssl/server.key + + <Location /bitcoinrpc> + ProxyPass http://127.0.0.1:8332/ + ProxyPassReverse http://127.0.0.1:8332/ + # optional enable digest auth + # AuthType Digest + # ... + + # optional bypass bitcoind rpc basic auth + # RequestHeader set Authorization "Basic <hash>" + # get the <hash> from the shell with: base64 <<< bitcoinrpc:<password> + </Location> + + # Or, balance the load: + # ProxyPass / balancer://balancer_cluster_name + + </VirtualHost> + +0.12.0 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 + +- #6121 `466f0ea` Convert entire source tree from json_spirit to UniValue +- #6234 `d38cd47` fix rpcmining/getblocktemplate univalue transition logic error +- #6239 `643114f` Don't go through double in AmountFromValue and ValueFromAmount +- #6266 `ebab5d3` Fix univalue handling of \u0000 characters. +- #6276 `f3d4dbb` Fix getbalance * 0 +- #6257 `5ebe7db` Add `paytxfee` and `errors` JSON fields where appropriate +- #6271 `754aae5` New RPC command disconnectnode +- #6158 `0abfa8a` Add setban/listbanned RPC commands +- #6307 `7ecdcd9` rpcban fixes +- #6290 `5753988` rpc: make `gettxoutsettinfo` run lock-free +- #6262 `247b914` Return all available information via RPC call "validateaddress" +- #6339 `c3f0490` UniValue: don't escape solidus, keep espacing of reverse solidus +- #6353 `6bcb0a2` Show softfork status in getblockchaininfo +- #6247 `726e286` Add getblockheader RPC call +- #6362 `d6db115` Fix null id in RPC response during startup +- #5486 `943b322` [REST] JSON support for /rest/headers +- #6379 `c52e8b3` rpc: Accept scientific notation for monetary amounts in JSON +- #6388 `fd5dfda` rpc: Implement random-cookie based authentication +- #6457 `3c923e8` Include pruned state in chaininfo.json +- #6456 `bfd807f` rpc: Avoid unnecessary parsing roundtrip in number formatting, fix locale issue +- #6380 `240b30e` rpc: Accept strings in AmountFromValue +- #6346 `6bb2805` Add OP_RETURN support in createrawtransaction RPC call, add tests. +- #6013 `6feeec1` [REST] Add memory pool API +- #6576 `da9beb2` Stop parsing JSON after first finished construct. +- #5677 `9aa9099` libevent-based http server +- #6633 `bbc2b39` Report minimum ping time in getpeerinfo +- #6648 `cd381d7` Simplify logic of REST request suffix parsing. +- #6695 `5e21388` libevent http fixes +- #5264 `48efbdb` show scriptSig signature hash types in transaction decodes. fixes #3166 +- #6719 `1a9f19a` Make HTTP server shutdown more graceful +- #6859 `0fbfc51` http: Restrict maximum size of http + headers +- #5936 `bf7c195` [RPC] Add optional locktime to createrawtransaction +- #6877 `26f5b34` rpc: Add maxmempool and effective min fee to getmempoolinfo +- #6970 `92701b3` Fix crash in validateaddress with -disablewallet +- #5574 `755b4ba` Expose GUI labels in RPC as comments +- #6990 `dbd2c13` http: speed up shutdown +- #7013 `36baa9f` Remove LOCK(cs_main) from decodescript +- #6999 `972bf9c` add (max)uploadtarget infos to getnettotals RPC help +- #7011 `31de241` Add mediantime to getblockchaininfo +- #7065 `f91e29f` http: add Boost 1.49 compatibility +- #7087 `be281d8` [Net]Add -enforcenodebloom option +- #7044 `438ee59` RPC: Added additional config option for multiple RPC users. +- #7072 `c143c49` [RPC] Add transaction size to JSON output +- #7022 `9afbd96` Change default block priority size to 0 +- #7141 `c0c08c7` rpc: Don't translate warning messages +- #7312 `fd4bd50` Add RPC call abandontransaction + ### Configuration and command-line options +- #6164 `8d05ec7` Allow user to use -debug=1 to enable all debugging +- #5288 `4452205` Added -whiteconnections=<n> option +- #6284 `10ac38e` Fix argument parsing oddity with -noX +- #6489 `c9c017a` Give a better error message if system clock is bad +- #6462 `c384800` implement uacomment config parameter which can add comments to user agent as per BIP-0014 +- #6647 `a3babc8` Sanitize uacomment +- #6742 `3b2d37c` Changed logging to make -logtimestamps to work also for -printtoconsole #6742 +- #6846 `2cd020d` alias -h for -help +- #6622 `7939164` Introduce -maxuploadtarget +- #6881 `2b62551` Debug: Add option for microsecond precision in debug.log +- #6776 `e06c14f` Support -checkmempool=N, which runs checks once every N transactions +- #6896 `d482c0a` Make -checkmempool=1 not fail through int32 overflow +- #6993 `b632145` Add -blocksonly option +- #7323 `a344880` 0.12: Backport -bytespersigop option + ### Block and transaction handling +- #6203 `f00b623` Remove P2SH coinbase flag, no longer interesting +- #6222 `9c93ee5` Explicitly set tx.nVersion for the genesis block and mining tests +- #5985 `3a1d3e8` Fix removing of orphan transactions +- #6221 `dd8fe82` Prune: Support noncontiguous block files +- #6124 `41076aa` Mempool only CHECKLOCKTIMEVERIFY (BIP65) verification, unparameterized version +- #6329 `d0a10c1` acceptnonstdtxn option to skip (most) "non-standard transaction" checks, for testnet/regtest only +- #6410 `7cdefb9` Implement accurate memory accounting for mempool +- #6444 `24ce77d` Exempt unspendable transaction outputs from dust checks +- #5913 `a0625b8` Add absurdly high fee message to validation state +- #6177 `2f746c6` Prevent block.nTime from decreasing +- #6377 `e545371` Handle no chain tip available in InvalidChainFound() +- #6551 `39ddaeb` Handle leveldb::DestroyDB() errors on wipe failure +- #6654 `b0ce450` Mempool package tracking +- #6715 `82d2aef` Fix mempool packages +- #6680 `4f44530` use CBlockIndex instead of uint256 for UpdatedBlockTip signal +- #6650 `4fac576` Obfuscate chainstate +- #6777 `9caaf6e` Unobfuscate chainstate data in CCoinsViewDB::GetStats +- #6722 `3b20e23` Limit mempool by throwing away the cheapest txn and setting min relay fee to it +- #6889 `38369dd` fix locking issue with new mempool limiting +- #6464 `8f3b3cd` Always clean up manual transaction prioritization +- #6865 `d0badb9` Fix chainstate serialized_size computation +- #6566 `ff057f4` BIP-113: Mempool-only median time-past as endpoint for lock-time calculations +- #6934 `3038eb6` Restores mempool only BIP113 enforcement +- #6965 `de7d459` Benchmark sanity checks and fork checks in ConnectBlock +- #6918 `eb6172a` Make sigcache faster, more efficient, larger +- #6771 `38ed190` Policy: Lower default limits for tx chains +- #6932 `73fa5e6` ModifyNewCoins saves database lookups +- #5967 `05d5918` Alter assumptions in CCoinsViewCache::BatchWrite +- #6871 `0e93586` nSequence-based Full-RBF opt-in +- #7008 `eb77416` Lower bound priority +- #6915 `2ef5ffa` [Mempool] Improve removal of invalid transactions after reorgs +- #6898 `4077ad2` Rewrite CreateNewBlock +- #6872 `bdda4d5` Remove UTXO cache entries when the tx they were added for is removed/does not enter mempool +- #7062 `12c469b` [Mempool] Fix mempool limiting and replace-by-fee for PrioritiseTransaction +- #7276 `76de36f` Report non-mandatory script failures correctly +- #7217 `e08b7cb` Mark blocks with too many sigops as failed + ### P2P protocol and network code +- #6172 `88a7ead` Ignore getheaders requests when not synced +- #5875 `9d60602` Be stricter in processing unrequested blocks +- #6256 `8ccc07c` Use best header chain timestamps to detect partitioning +- #6283 `a903ad7` make CAddrMan::size() return the correct type of size_t +- #6272 `40400d5` Improve proxy initialization (continues #4871) +- #6310 `66e5465` banlist.dat: store banlist on disk +- #6412 `1a2de32` Test whether created sockets are select()able +- #6498 `219b916` Keep track of recently rejected transactions with a rolling bloom filter (cont'd) +- #6556 `70ec975` Fix masking of irrelevant bits in address groups. +- #6530 `ea19c2b` Improve addrman Select() performance when buckets are nearly empty +- #6583 `af9305a` add support for miniupnpc api version 14 +- #6374 `69dc5b5` Connection slot exhaustion DoS mitigation +- #6636 `536207f` net: correctly initialize nMinPingUsecTime +- #6579 `0c27795` Add NODE_BLOOM service bit and bump protocol version +- #6148 `999c8be` Relay blocks when pruning +- #6588 `cf9bb11` In (strCommand == "tx"), return if AlreadyHave() +- #6974 `2f71b07` Always allow getheaders from whitelisted peers +- #6639 `bd629d7` net: Automatically create hidden service, listen on Tor +- #6984 `9ffc687` don't enforce maxuploadtarget's disconnect for whitelisted peers +- #7046 `c322652` Net: Improve blocks only mode. +- #7090 `d6454f6` Connect to Tor hidden services by default (when listening on Tor) +- #7106 `c894fbb` Fix and improve relay from whitelisted peers +- #7129 `5d5ef3a` Direct headers announcement (rebase of #6494) +- #7079 `1b5118b` Prevent peer flooding inv request queue (redux) (redux) +- #7166 `6ba25d2` Disconnect on mempool requests from peers when over the upload limit. +- #7133 `f31955d` Replace setInventoryKnown with a rolling bloom filter (rebase of #7100) +- #7174 `82aff88` Don't do mempool lookups for "mempool" command without a filter +- #7179 `44fef99` net: Fix sent reject messages for blocks and transactions +- #7181 `8fc174a` net: Add and document network messages in protocol.h +- #7125 `10b88be` Replace global trickle node with random delays + ### Validation +- #5927 `8d9f0a6` Reduce checkpoints' effect on consensus. +- #6299 `24f2489` Bugfix: Don't check the genesis block header before accepting it +- #6361 `d7ada03` Use real number of cores for default -par, ignore virtual cores +- #6519 `87f37e2` Make logging for validation optional +- #6351 `2a1090d` CHECKLOCKTIMEVERIFY (BIP65) IsSuperMajority() soft-fork +- #6931 `54e8bfe` Skip BIP 30 verification where not necessary +- #6954 `e54ebbf` Switch to libsecp256k1-based ECDSA validation +- #6508 `61457c2` Switch to a constant-space Merkle root/branch algorithm. +- #6914 `327291a` Add pre-allocated vector type and use it for CScript + ### Build system +- #6210 `0e4f2a0` build: disable optional use of gmp in internal secp256k1 build +- #6214 `87406aa` [OSX] revert renaming of Bitcoin-Qt.app and use CFBundleDisplayName (partial revert of #6116) +- #6218 `9d67b10` build/gitian misc updates +- #6269 `d4565b6` gitian: Use the new bitcoin-detached-sigs git repo for OSX signatures +- #6418 `d4a910c` Add autogen.sh to source tarball. +- #6373 `1ae3196` depends: non-qt bumps for 0.12 +- #6434 `059b352` Preserve user-passed CXXFLAGS with --enable-debug +- #6501 `fee6554` Misc build fixes +- #6600 `ef4945f` Include bitcoin-tx binary on Debian/Ubuntu +- #6619 `4862708` depends: bump miniupnpc and ccache +- #6801 `ae69a75` [depends] Latest config.guess and config.sub +- #6938 `193f7b5` build: If both Qt4 and Qt5 are installed, use Qt5 +- #7092 `348b281` build: Set osx permissions in the dmg to make Gatekeeper happy +- #6980 `eccd671` [Depends] Bump Boost, miniupnpc, ccache & zeromq + ### Wallet +- #6183 `87550ee` Fix off-by-one error w/ nLockTime in the wallet +- #6057 `ac5476e` re-enable wallet in autoprune +- #6356 `9e6c33b` Delay initial pruning until after wallet init +- #6088 `91389e5` fundrawtransaction +- #6415 `ddd8d80` Implement watchonly support in fundrawtransaction +- #6567 `0f0f323` Fix crash when mining with empty keypool. +- #6688 `4939eab` Fix locking in GetTransaction. +- #6645 `4dbd43e` Enable wallet key imports without rescan in pruned mode. +- #6550 `5b77244` Do not store Merkle branches in the wallet. +- #5924 `12a7712` Clean up change computation in CreateTransaction. +- #6906 `48b5b84` Reject invalid pubkeys when reading ckey items from the wallet. +- #7010 `e0a5ef8` Fix fundrawtransaction handling of includeWatching +- #6851 `616d61b` Optimisation: Store transaction list order in memory rather than compute it every need +- #6134 `e92377f` Improve usage of fee estimation code +- #7103 `a775182` [wallet, rpc tests] Fix settxfee, paytxfee +- #7105 `30c2d8c` Keep track of explicit wallet conflicts instead of using mempool +- #7096 `9490bd7` [Wallet] Improve minimum absolute fee GUI options +- #6216 `83f06ca` Take the training wheels off anti-fee-sniping +- #4906 `96e8d12` Issue#1643: Coinselection prunes extraneous inputs from ApproximateBestSubset +- #7200 `06c6a58` Checks for null data transaction before issuing error to debug.log +- #7296 `a36d79b` Add sane fallback for fee estimation +- #7293 `ff9b610` Add regression test for vValue sort order +- #7306 `4707797` Make sure conflicted wallet tx's update balances + ### GUI -### Tests +- #6217 `c57e12a` disconnect peers from peers tab via context menu +- #6209 `ab0ec67` extend rpc console peers tab +- #6484 `1369d69` use CHashWriter also in SignVerifyMessageDialog +- #6487 `9848d42` Introduce PlatformStyle +- #6505 `100c9d3` cleanup icons +- #4587 `0c465f5` allow users to set -onion via GUI +- #6529 `c0f66ce` show client user agent in debug window +- #6594 `878ea69` Disallow duplicate windows. +- #5665 `6f55cdd` add verifySize() function to PaymentServer +- #6317 `ca5e2a1` minor optimisations in peertablemodel +- #6315 `e59d2a8` allow banning and unbanning over UI->peers table +- #6653 `e04b2fa` Pop debug window in foreground when opened twice +- #6864 `c702521` Use monospace font +- #6887 `3694b74` Update coin control and smartfee labels +- #7000 `814697c` add shortcurts for debug-/console-window +- #6951 `03403d8` Use maxTxFee instead of 10000000 +- #7051 `a190777` ui: Add "Copy raw transaction data" to transaction list context menu +- #6979 `776848a` simple mempool info in debug window +- #7006 `26af1ac` add startup option to reset Qt settings +- #6780 `2a94cd6` Call init's parameter interaction before we create the UI options model +- #7112 `96b8025` reduce cs_main locks during tip update, more fluently update UI +- #7206 `f43c2f9` Add "NODE_BLOOM" to guiutil so that peers don't get UNKNOWN[4] +- #7282 `5cadf3e` fix coincontrol update issue when deleting a send coins entry +- #7319 `1320300` Intro: Display required space +- #7318 `9265e89` quickfix for RPC timer interface problem + +### Tests and QA + +- #6305 `9005c91` build: comparison tool swap +- #6318 `e307e13` build: comparison tool NPE fix +- #6337 `0564c5b` Testing infrastructure: mocktime fixes +- #6350 `60abba1` add unit tests for the decodescript rpc +- #5881 `3203a08` Fix and improve txn_doublespend.py test +- #6390 `6a73d66` tests: Fix bitcoin-tx signing test case +- #6368 `7fc25c2` CLTV: Add more tests to improve coverage +- #6414 `5121c68` Fix intermittent test failure, reduce test time +- #6417 `44fa82d` [QA] fix possible reorg issue in (fund)rawtransaction(s).py RPC test +- #6398 `3d9362d` rpc: Remove chain-specific RequireRPCPassword +- #6428 `bb59e78` tests: Remove old sh-based test framework +- #5515 `d946e9a` RFC: Assert on probable deadlocks if the second lock isnt try_lock +- #6287 `d2464df` Clang lock debug +- #6465 `410fd74` Don't share objects between TestInstances +- #6534 `6c1c7fd` Fix test locking issues and un-revert the probable-deadlines assertions commit +- #6509 `bb4faee` Fix race condition on test node shutdown +- #6523 `561f8af` Add p2p-fullblocktest.py +- #6590 `981fd92` Fix stale socket rebinding and re-enable python tests for Windows +- #6730 `cb4d6d0` build: Remove dependency of bitcoin-cli on secp256k1 +- #6616 `5ab5dca` Regression Tests: Migrated rpc-tests.sh to all Python rpc-tests.py +- #6720 `d479311` Creates unittests for addrman, makes addrman more testable. +- #6853 `c834f56` Added fPowNoRetargeting field to Consensus::Params +- #6827 `87e5539` [rpc-tests] Check return code +- #6848 `f2c869a` Add DERSIG transaction test cases +- #6813 `5242bb3` Support gathering code coverage data for RPC tests with lcov +- #6888 `c8322ff` Clear strMiscWarning before running PartitionAlert +- #6894 `2675276` [Tests] Fix BIP65 p2p test +- #6863 `725539e` [Test Suite] Fix test for null tx input +- #6926 `a6d0d62` tests: Initialize networking on windows +- #6822 `9fa54a1` [tests] Be more strict checking dust +- #6804 `5fcc14e` [tests] Add basic coverage reporting for RPC tests +- #7045 `72dccfc` Bugfix: Use unique autostart filenames on Linux for testnet/regtest +- #7095 `d8368a0` Replace scriptnum_test's normative ScriptNum implementation +- #7063 `6abf6eb` [Tests] Add prioritisetransaction RPC test +- #7137 `16f4a6e` Tests: Explicitly set chain limits in replace-by-fee test +- #7216 `9572e49` Removed offline testnet DNSSeed 'alexykot.me'. +- #7209 `f3ad812` test: don't override BITCOIND and BITCOINCLI if they're set +- #7226 `301f16a` Tests: Add more tests to p2p-fullblocktest +- #7153 `9ef7c54` [Tests] Add mempool_limit.py test +- #7170 `453c567` tests: Disable Tor interaction +- #7229 `1ed938b` [qa] wallet: Check if maintenance changes the balance +- #7308 `d513405` [Tests] Eliminate intermittent failures in sendheaders.py ### Miscellaneous -- **Removed bitrpc.py from contrib** - -- **Addition of ZMQ-based Notifications** +- #6213 `e54ff2f` [init] add -blockversion help and extend -upnp help +- #5975 `1fea667` Consensus: Decouple ContextualCheckBlockHeader from checkpoints +- #6061 `eba2f06` Separate Consensus::CheckTxInputs and GetSpendHeight in CheckInputs +- #5994 `786ed11` detach wallet from miner +- #6387 `11576a5` [bitcoin-cli] improve error output +- #6401 `6db53b4` Add BITCOIND_SIGTERM_TIMEOUT to OpenRC init scripts +- #6430 `b01981e` doc: add documentation for shared library libbitcoinconsensus +- #6372 `dcc495e` Update Linearize tool to support Windows paths; fix variable scope; update README and example configuration +- #6453 `8fe5cce` Separate core memory usage computation in core_memusage.h +- #6149 `633fe10` Buffer log messages and explicitly open logs +- #6488 `7cbed7f` Avoid leaking file descriptors in RegisterLoad +- #6497 `a2bf40d` Make sure LogPrintf strings are line-terminated +- #6504 `b6fee6b` Rationalize currency unit to "BTC" +- #6507 `9bb4dd8` Removed contrib/bitrpc +- #6527 `41d650f` Use unique name for AlertNotify tempfile +- #6561 `e08a7d9` limitedmap fixes and tests +- #6565 `a6f2aff` Make sure we re-acquire lock if a task throws +- #6599 `f4d88c4` Make sure LogPrint strings are line-terminated +- #6630 `195942d` Replace boost::reverse_lock with our own +- #6103 `13b8282` Add ZeroMQ notifications +- #6692 `d5d1d2e` devtools: don't push if signing fails in github-merge +- #6728 `2b0567b` timedata: Prevent warning overkill +- #6713 `f6ce59c` SanitizeString: Allow hypen char +- #5987 `4899a04` Bugfix: Fix testnet-in-a-box use case +- #6733 `b7d78fd` Simple benchmarking framework +- #6854 `a092970` devtools: Add security-check.py +- #6790 `fa1d252` devtools: add clang-format.py +- #7114 `f3d0fdd` util: Don't set strMiscWarning on every exception +- #7078 `93e0514` uint256::GetCheapHash bigendian compatibility +- #7094 `34e02e0` Assert now > 0 in GetTime GetTimeMillis GetTimeMicros + +Credits +======= + +Thanks to everyone who directly contributed to this release: + +- accraze +- Adam Weiss +- Alex Morcos +- Alex van der Peet +- AlSzacrel +- Altoidnerd +- Andriy Voskoboinyk +- antonio-fr +- Arne Brutschy +- Ashley Holman +- Bob McElrath +- Braydon Fuller +- BtcDrak +- Casey Rodarmor +- centaur1 +- Chris Kleeschulte +- Christian Decker +- Cory Fields +- daniel +- Daniel Cousens +- Daniel Kraft +- David Hill +- dexX7 +- Diego Viola +- Elias Rohrer +- Eric Lombrozo +- Erik Mossberg +- Esteban Ordano +- EthanHeilman +- fanquake +- Florian Schmaus +- Forrest Voight +- Gavin Andresen +- Gregory Maxwell +- Gregory Sanders +- Ian T +- Irving Ruan +- Jacob Welsh +- James O'Beirne +- Jeff Garzik +- Johnathan Corgan +- Jonas Schnelli +- Jonathan Cross +- João Barbosa +- Jorge Timón +- Josh Lehan +- J Ross Nicoll +- kazcw +- Kevin Cooper +- lpescher +- Luke Dashjr +- Marco +- MarcoFalke +- Mark Friedenbach +- Matt Bogosian +- Matt Corallo +- Matt Quinn +- Micha +- Michael +- Michael Ford +- Midnight Magic +- Mitchell Cash +- mruddy +- Nick +- Patick Strateman +- Patrick Strateman +- Paul Georgiou +- Paul Rabahy +- paveljanik +- Pavel Janík +- Pavel Vasin +- Pavol Rusnak +- Peter Josling +- Peter Todd +- Philip Kaufmann +- Pieter Wuille +- ptschip +- randy-waterhouse +- rion +- Ross Nicoll +- Ryan Havar +- Shaul Kfir +- Simon Males +- Stephen +- Suhas Daftuar +- tailsjoin +- ฿tcDrak +- Thomas Kerin +- Tom Harding +- tulip +- unsystemizer +- Veres Lajos +- Wladimir J. van der Laan +- Zak Wilcox +- zathras-crypto + +As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/). -Bitcoind can now (optionally) asynchronously notify clients through a -ZMQ-based PUB socket of the arrival of new transactions and blocks. -This feature requires installation of the ZMQ C API library 4.x and -configuring its use through the command line or configuration file. -Please see docs/zmq.md for details of operation. |