Feature Matrix
This section gives more details about the features and implementation status of Hermes in comparison with the cosmos-go-relayer.
Legend:
| Term | Description |
|---|---|
| ❌ | feature not supported |
| ✅ | feature is supported |
Chain | chain related |
Cl | client related |
Conn | connection related |
Chan | channel related |
Cfg | config related |
.._Handshake_.. | can execute all transactions required to finish a handshake from a single command |
.._<msg>_A | building and sending msg from a command that scans chain state |
.._<msg>_P | building and sending msg from IBC event; doesn't apply to .._Init and FT_Transfer features |
Feature comparison between Hermes and the Go relayer
| Features \ Status | Hermes | Cosmos Go | Feature Details |
|---|---|---|---|
| Restart | ✅ | ✅ | replays any IBC events that happened before restart |
| Multiple_Paths | ✅ | ✅ | relays on multiple paths concurrently |
| Connection Delay | ✅ | ❌ | |
| Cl_Misbehavior | ✅ | ❌ | monitors and submits IBC client misbehavior |
| Cl_Refresh | ✅ | ❌ | periodically refresh an on-chain client to prevent expiration |
| Packet Delay | ✅ | ❌ | |
| Chan_Unordered | ✅ | ✅ | |
| Chan_Ordered | ✅ | ❓ | |
| Cl_Tendermint_Create | ✅ | ✅ | tendermint light client creation |
| Cl_Tendermint_Update | ✅ | ✅ | tendermint light client update |
| Cl_Tendermint_Upgrade | ✅ | ✅ | tendermint light client upgrade |
| Conn_Open_Handshake_A | ✅ | ✅ | |
| Conn_Open_Handshake_P | ✅ | ❌ | |
| Chan_Open_Handshake_A | ✅ | ✅ | |
| Chan_Open_Handshake_P | ✅ | ❌ | |
| Chan_Open_Handshake_Optimistic | ❌ | ❌ | open a channel on a non-Open connection |
| Chan_Close_Handshake_P | ✅ | ✅ | |
| Chan_Close_Handshake_A | ✅ | ❌ | |
| FT_Transfer | ✅ | ✅ | can submit an ICS-20 fungible token transfer message |
| ICA_Relay | ✅ | ❌ | can relay ICS-27 Interchain account packets |
| Packet_Recv_A | ✅ | ✅ | |
| Packet_Recv_P | ✅ | ✅ | |
| Packet_Timeout_A | ✅ | ✅ | |
| Packet_Timeout_P | ✅ | ✅ | |
| Packet_TimeoutClose_A | ✅ | ❓ | |
| Packet_TimeoutClose_P | ✅ | ❓ | |
| Packet_Optimistic | ❌ | ❓ | relay packets over non-Open channels |
| Cl_Non_Tendermint | ❌ | ❌ | supports non tendermint IBC light clients |
| Chain_Non_Cosmos | ❌ | ❌ | supports non cosmos-SDK chains |
| Cfg_Static | ✅ | ✅ | provides means for configuration prior to being started |
| Cfg_Dynamic | ❌ | ❌ | provides means for configuration and monitoring during runtime |
| Cfg_Download_Config | ❌ | ✅ | provides means for downloading recommended configuration |
| Cfg_Edit_Config | ❌ | ✅ | provides means for editing the configuration from the CLI |
| Cfg_Validation | ✅ | ✅ | provides means to validate the current configuration |
| Telemetry | ✅ | ❌ | telemetry server to collect metrics |
| REST API | ✅ | ❌ | REST API to interact with the relayer |