Rust implementation of the Inter-Blockchain Communication (IBC) protocol.
This project comprises primarily four crates:
- The
ibccrate defines the main data structures and on-chain logic for the IBC protocol. - The
ibc-relayercrate provides an implementation of an IBC relayer, as a library. - The
ibc-relayer-clicrate is a CLI (a wrapper over theibc-relayerlibrary), comprising thehermesbinary. - The
ibc-protocrate is a library with Rust types generated from .proto definitions necessary for interacting with Cosmos SDK and its IBC structs. - The
ibc-telemetrycrate is a library for use in thehermesCLI, for gathering telemetry data and exposing that in a Prometheus endpoint. - The
ibc-test-frameworkcrate provides the infrastructure and framework for writing end-to-end (E2E) tests that include the spawning of the relayer together with Cosmos full nodes.
See the table below for more details.
Includes TLA+ specifications.
| Crate name | Type | Version | Docs |
|---|---|---|---|
| ibc | lib |  |
 |
| ibc-relayer | lib |  |
 |
| ibc-relayer-cli | bin: hermes |  |
 |
| ibc-relayer-rest | lib |  |
 |
| ibc-proto | lib |  |
 |
| ibc-telemetry | lib |  |
 |
| ibc-test-framework | lib |  |
 |
The crates in this project require the latest stable version of Rust: 1.60.0.
The relayer CLI binary, called hermes, has a comprehensive guide at
hermes.informal.systems.
IBC is specified in English in the cosmos/ibc repo. Any protocol changes or clarifications should be contributed there.
This repo contains the TLA+ specification and Rust implementation for the IBC modules and relayer. If you're interested in contributing, please comment on an issue or open a new one!
See also CONTRIBUTING.md.
We follow Semantic Versioning, though APIs are still under active development.
Copyright © 2022 Informal Systems Inc. and ibc-rs authors.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use the files in this repository except in compliance with the License. You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.