Introducing XRP Ledger version 2.2.0

Version 2.2.0 of rippled, the reference server implementation of the XRP Ledger protocol, is now available. This release adds performance optimizations, several bug fixes, and introduces the featurePriceOracle, fixEmptyDID, fixXChainRewardRounding, fixPreviousTxnID, and fixAMMv1_1 amendments.

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Action Required

Five new amendments are now open for voting according to the XRP Ledger's amendment process, which enables protocol changes following two weeks of >80% support from trusted validators.

If you operate an XRP Ledger server, upgrade to version 2.2.0 by June 17, 2024 to ensure service continuity. The exact time that protocol changes take effect depends on the voting decisions of the decentralized network.

If you operate a Clio server, Clio needs to be updated to 2.1.2 before updating to rippled 2.2.0. Clio will be blocked if it is not updated.

Install / Upgrade

On supported platforms, see the instructions on installing or updating rippled.

For other platforms, please build from source. The most recent commit in the git log should be the change setting the version:

commit 2df635693d54b8c17c428faf6ef99da2f14a9382
Author: seelabs <[email protected]>
Date:   Mon Jun 3 21:48:05 2024 -0400

    Set version to 2.2.0

Changelog

Amendments and New Features

(These are changes which may impact or be useful to end users. For example, you may be able to update your code/workflow to take advantage of these changes.)

• featurePriceOracle amendment: Implements a price oracle as defined in the XLS-0047 spec. A Price Oracle is used to bring real-world data, such as market prices, onto the blockchain, enabling dApps to access and utilize information that resides outside the blockchain. #4789

• fixEmptyDID amendment: Modifies the behavior of the DID amendment: adds an additional check to ensure that DIDs are non-empty when created, and returns a tecEMPTY_DID error if the DID would be empty. #4950

• fixXChainRewardRounding amendment: Modifies the behavior of the XChainBridge amendment: fixes rounding so reward shares are always rounded down, even when the fixUniversalNumber amendment is active. #4933

• fixPreviousTxnID amendment: Adds PreviousTxnID and PreviousTxnLgrSequence as fields to all ledger entries that did not already have them included (DirectoryNode, Amendments, FeeSettings, NegativeUNL, and AMM). Existing ledger entries will gain the fields whenever transactions modify those entries. #4751.

• fixAMMv1_1 amendment: Fixes AMM offer rounding and low quality order book offers from blocking the AMM. #4983

• Add a non-admin version of feature API method. #4781

Bug Fixes and Performance Improvements

(These are behind-the-scenes improvements, such as internal changes to the code, which are not expected to impact end users.)

• Optimize the base58 encoder and decoder. The algorithm is now about 10 times faster for encoding and 15 times faster for decoding. #4327

• Optimize the account_tx SQL query. #4955

• Don't reach consensus as quickly if no other proposals are seen. #4763

• Fix a potential deadlock in the database module. #4989

• Enforce no duplicate slots from incoming connections. #4944

• Fix an order book update variable swap. #4890

Docs and Build System

• Add unit test to raise the test coverage of the AMM. #4971

• Improve test coverage reporting. #4977

GitHub

The public source code repository for rippled is hosted on GitHub.

We welcome all contributions and invite everyone to join the community of XRP Ledger developers to help build the Internet of Value.

Credits

The following people contributed directly to this release:

• Alex Kremer [email protected]
• Alloy Networks [email protected]
• Bronek Kozicki [email protected]
• Chenna Keshava [email protected]
• Denis Angell [email protected]
• Ed Hennis [email protected]
• Gregory Tsipenyuk [email protected]
• Howard Hinnant [email protected]
• John Freeman [email protected]
• Mark Travis [email protected]
• Mayukha Vadari [email protected]
• Michael Legleux [email protected]
• Nik Bougalis [email protected]
• Olek [email protected]
• Scott Determan [email protected]
• Snoppy [email protected]

Bug Bounties and Responsible Disclosures:

We welcome reviews of the rippled code and urge researchers to responsibly disclose any issues they may find.

To report a bug, please send a detailed report to: [email protected].