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Diffstat (limited to 'doc/release-notes.md')
| -rw-r--r-- | doc/release-notes.md | 114 |
1 files changed, 102 insertions, 12 deletions
diff --git a/doc/release-notes.md b/doc/release-notes.md index f5c139e3f1..53b5a2119f 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -47,8 +47,9 @@ processing the entire blockchain. Compatibility ============== -Bitcoin Core is extensively tested on multiple operating systems using -the Linux kernel, macOS 10.10+, and Windows 7 and newer (Windows XP is not supported). +Bitcoin Core is supported and extensively tested on operating systems using +the Linux kernel, macOS 10.10+, and Windows 7 and newer. It is not recommended +to use Bitcoin Core on unsupported systems. Bitcoin Core should also work on most other Unix-like systems but is not frequently tested on them. @@ -65,15 +66,50 @@ platform. Notable changes =============== -Command line option changes ---------------------------- - -The `-enablebip61` command line option (introduced in Bitcoin Core 0.17.0) is -used to toggle sending of BIP 61 reject messages. Reject messages have no use -case on the P2P network and are only logged for debugging by most network -nodes. The option will now by default be off for improved privacy and security -as well as reduced upload usage. The option can explicitly be turned on for -local-network debugging purposes. +Mining +------ + +- Calls to `getblocktemplate` will fail if the segwit rule is not specified. + Calling `getblocktemplate` without segwit specified is almost certainly + a misconfiguration since doing so results in lower rewards for the miner. + Failed calls will produce an error message describing how to enable the + segwit rule. + +Configuration option changes +---------------------------- + +- A warning is printed if an unrecognized section name is used in the + configuration file. Recognized sections are `[test]`, `[main]`, and + `[regtest]`. + +- Four new options are available for configuring the maximum number of + messages that ZMQ will queue in memory (the "high water mark") before + dropping additional messages. The default value is 1,000, the same as + was used for previous releases. See the [ZMQ + documentation](https://github.com/bitcoin/bitcoin/blob/master/doc/zmq.md#usage) + for details. + +- The `enablebip61` option (introduced in Bitcoin Core 0.17.0) is + used to toggle sending of BIP 61 reject messages. Reject messages have no use + case on the P2P network and are only logged for debugging by most network + nodes. The option will now by default be off for improved privacy and security + as well as reduced upload usage. The option can explicitly be turned on for + local-network debugging purposes. + +- The `rpcallowip` option can no longer be used to automatically listen + on all network interfaces. Instead, the `rpcbind` parameter must also + be used to specify the IP addresses to listen on. Listening for RPC + commands over a public network connection is insecure and should be + disabled, so a warning is now printed if a user selects such a + configuration. If you need to expose RPC in order to use a tool + like Docker, ensure you only bind RPC to your localhost, e.g. `docker + run [...] -p 127.0.0.1:8332:8332` (this is an extra `:8332` over the + normal Docker port specification). + +- The `rpcpassword` option now causes a startup error if the password + set in the configuration file contains a hash character (#), as it's + ambiguous whether the hash character is meant for the password or as a + comment. Documentation ------------- @@ -160,7 +196,7 @@ Updated RPCs Note: some low-level RPC changes mainly useful for testing are described in the Low-level Changes section below. -- The `getpeerinfo` RPC now returns an additional "minfeefilter" field +- The `getpeerinfo` RPC now returns an additional `minfeefilter` field set to the peer's BIP133 fee filter. You can use this to detect that you have peers that are willing to accept transactions below the default minimum relay fee. @@ -182,6 +218,50 @@ in the Low-level Changes section below. P2SH-P2WPKH, and P2SH-P2WSH. Requests for P2WSH and P2SH-P2WSH accept an additional `witnessscript` parameter. +- The `importmulti` RPC now returns an additional `warnings` field for + each request with an array of strings explaining when fields are being + ignored or are inconsistent, if there are any. + +- The `getaddressinfo` RPC now returns an additional `solvable` boolean + field when Bitcoin Core knows enough about the address's scriptPubKey, + optional redeemScript, and optional witnessScript in order for the + wallet to be able to generate an unsigned input spending funds sent to + that address. + +- The `getaddressinfo`, `listunspent`, and `scantxoutset` RPCs now + return an additional `desc` field that contains an output descriptor + containing all key paths and signing information for the address + (except for the private key). The `desc` field is only returned for + `getaddressinfo` and `listunspent` when the address is solvable. + +- The `importprivkey` RPC will preserve previously-set labels for + addresses or public keys corresponding to the private key being + imported. For example, if you imported a watch-only address with the + label "cold wallet" in earlier releases of Bitcoin Core, subsequently + importing the private key would default to resetting the address's + label to the default empty-string label (""). In this release, the + previous label of "cold wallet" will be retained. If you optionally + specify any label besides the default when calling `importprivkey`, + the new label will be applied to the address. + +- See the [Mining](#mining) section for changes to `getblocktemplate`. + +Graphical User Interface (GUI) +------------------------------ + +- A new Window menu is added alongside the existing File, Settings, and + Help menus. Several items from the other menus that opened new + windows have been moved to this new Window menu. + +- In the Send tab, the checkbox for "pay only the required fee" + has been removed. Instead, the user can simply decrease the value in + the Custom Feerate field all the way down to the node's configured + minimum relay fee. + +- In the Overview tab, the watch-only balance will be the only + balance shown if the wallet was created using the `createwallet` RPC + and the `disable_private_keys` parameter was set to true. + Low-level changes ================= @@ -206,6 +286,16 @@ Configuration deterministic wallets. This release makes specifying `-usehd` an invalid configuration option. +Changes for particular platforms +-------------------------------- + +- On macOS, Bitcoin Core now opts out of application CPU throttling + ("app nap") during initial blockchain download, when catching up from + over 100 blocks behind the current chain tip, or when reindexing chain + data. This helps prevent these operations from taking an excessively + long time because the operating system is attempting to conserve + power. + Credits ======= |