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@KtorZ KtorZ released this 23 Mar 09:04
· 7289 commits to master since this release
0.4.0
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KtorZ Matthias Benkort
GPG key ID: 33173CB6F77F4277
Learn about vigilant mode.
29e9204
This commit was signed with the committer’s verified signature.
KtorZ Matthias Benkort
GPG key ID: 33173CB6F77F4277
Learn about vigilant mode.

Added

  • Our user manual 📖 is now available! It includes installation and usage instructions, a full API reference and also a knowledge base about Hydra concepts. The manual will be an ever-evolving source of documentation that we'll maintain alongside the project.ndividual Head instances #180.
  • Mint and burn state token used to thread state across the OCV state machine, and participation tokens for each party in the head #181
  • Provide (mandatory) command-line options --ledger-genesis and --ledger-protocol-parameters to configure the ledger that runs inside a head. Options are provided as filepath to JSON files which match formats from cardano-cli and cardano-node #180.ano-api](https://github.com/input-output-hk/cardano-node/tree/master/cardano-api#cardano-api) specialized to the latest Cardano's era, and with useful extra utility functions.

Changed

  • --network-magic option for the hydra-node and hydra-tui has been changed to --network-id. Also, the hydra-tui command-line used to default to mainnet when not provided with any --network-magic option, it doesn't anymore, --network-id is mandatory. #180
  • Optimize the CollectCom transition of the on-chain Hydra contract to allow collecting commits from more than 2 parties! #254
  • Use a faucet to distribute funds in test suites and the demo/ setup.
  • Internally, better decouple the management of the on-chain head state from the network component. While not visible to the end user, this improvement paves the way for better handling rollbacks and on-chain "instability" of newly posted transactions. #184
  • Internally, improved and consolidate generators used for property-based testing to cover a wider range of cases, be more consistent and also faster (avoiding to generate too large nested data-structures).

Fixed

  • Hydra.Network.Ouroboros not using hard-coded valency values anymore to allow more than 7 peer connections #203.
  • Build issues due to explicit packages list in nix shell #223.
  • hydra-tui to show form focus, indicate invalid fields in dialogs and only allow valid values to be submitted #224.
  • Repaired benchmarks and improved collected metrics; in particular, benchmarks now collect CPU usage and provide average confirmation times over 5s windows.
  • Fixed a bug in the Fanout transaction scheduling and submission where clients would attempt to post a fanout transaction before a 'Close' transaction is even observed. Now, every participant of the head will attempt to post a fanout a transaction after they successfully observed a transaction. Of course, the layer 1 will enforce that only one fanout is posted #279.

Known Issues

  • Only no or one utxo can be committed to a Head.
  • Recipient addresses to send money to in the TUI are inferred from the current UTXO set. If a party does not commit a UTXO or consumes all its UTXO in a Head, it won't be able to send or receive anything anymore.
  • TUI crashes when user tries to post a new transaction without any UTXO remaining.
  • The internal wallet of hydra-node requires a UTXO to be marked as "fuel" to drive the Hydra protocol transactions. See user manual.
  • Aborting a head with more than 2 participants (i.e. > 2) requires increase in tx size limit over current mainchain parameters to ~20KB.
  • Head can collect at most 3 commits and each party can commit either 1 or 0 UTXO to a Head.
  • The head cannot be finalized if holding more than ~100 assets (or ~50 ada-only UTxO entries) with the standard tx size of 16KB.
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