v4.3.0

UPDATES

• 25th May 2023: This release is NOT recommended since it is impacted by the huckleberry security advisory. Please use version >= 4.3.1.

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We present here a summary of the most relevant changes, please see the v4.3.0 changelog for the full set of changes included in this release.

dependencies

• Cosmos SDK has been bumped to v0.45.12.
• ics23 has been bumped to v0.9.0.

core

• The writing of the channel in state is now done before invoking the application callbacks in ChannelOpenAck and ChannelOpenConfirm.

apps/29-fee

• A call to x\bank IsSendEnabledCoins has been added before escrowing fees in PayPacketFee and PayPacketFeeAsync.
• Save gas by checking key existence with KVStore's Has method in IsFeeEnabled.

Special thanks to our external contributors on this release: @alpe

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Please note that the v4 release line contains a bug where fee-enabled Interchain Accounts channels cannot be reopened in case of channel closure due to packet timeout. Regular Interchain Accounts channels (i.e. non fee-enabled) can be reopened. In order to be able to reopen fee-enabled Interchain Accounts channels, please upgrade to v5.2.1 or above.

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To learn more about ibc-go versioning, please read our RELEASES.md.

IMPORTANT: Please read the migration guides for any versions of ibc-go that you might be going through when upgrading to this version. For example: if you upgrade from the IBC module contained in the Cosmos SDK 0.42.0 to SDK v0.45.12 and ibc-go v4.3.0, please follow:

1. The migration from SDK 0.41.x or 0.42.x to the IBC module in the ibc-go repository based on the SDK v0.44.x.
2. The migration from ibc-go v1 to v2.
3. The migration from ibc-go v2 to v3.
4. The migration from ibc-go v3 to v4.