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https://github.com/icon-project/btp2-bsc
BTP 2.0 Relay System for BNB Smart Chain
https://github.com/icon-project/btp2-bsc
Last synced: about 2 months ago
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BTP 2.0 Relay System for BNB Smart Chain
- Host: GitHub
- URL: https://github.com/icon-project/btp2-bsc
- Owner: icon-project
- Created: 2023-03-03T08:21:52.000Z (over 1 year ago)
- Default Branch: plato
- Last Pushed: 2024-07-07T23:40:58.000Z (3 months ago)
- Last Synced: 2024-07-23T22:04:00.312Z (about 2 months ago)
- Language: Go
- Homepage:
- Size: 6.53 MB
- Stars: 0
- Watchers: 4
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
- awesome-icon - icon-project/btp2-bsc - Reference relay implementation for BTP 2.0 protocol. (Interoperability)
README
# Relay System for BTP 2.0
## Introduction
This is a reference `relay` implementation for BTP 2.0 protocol.
### Target chains
* ICON (BTP Block)
* BSC
### Terminologies
| Word | Description |
|:----------------|:----------------------------------------------------------------------------------------------------------------------------------------|
| BTP | Blockchain Transmission Protocol, see [ICON BTP Standard](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md). |
| BTP Message | A verified message which is delivered by the relay |
| Service Message | A payload in a BTP Message |
| Relay Message | A message including BTP Messages with proofs for that, and other block update messages. |
| Network Address | A string to identify blockchain network
*ex) 0x1.icon* |
| BTP Address | A string of URL for locating an account of the blockchain network
*ex) btp://0x1.icon/cx87ed9048b594b95199f326fc76e76a9d33dd665b* |
See [ICON BTP Standard](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md) and [Relay System for BTP 2.0](https://github.com/icon-project/btp2) for more details.
### Components
* [BTP Message Center (BMC)](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md#btp-message-center) - smart contract
- Receive BTP messages through transactions.
- Send BTP messages through events.
* [BTP Message Verifier (BMV)](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md#btp-message-verifier) - smart contract
- Update blockchain verification information
- Verify delivered BTP message and decode it
* [BTP Service Handler (BSH)](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md#btp-service-handler) - smart contract
- Handle service messages related to the service.
- Send service messages through the BMC
* [BTP Message Relay (BMR)](doc/bmr.md) - external software (implemented by this repository)
- Monitor BTP events
- Gather proofs for the events
- Send BTP Relay Message
## Getting Started
### Build Relay
```shell
`git clone https://github.com/icon-project/btp2-bsc.git --recurse-submodules`
`cd btp2-bsc`
# compile binary
`make relay`
# build docker image
make relay-image
```
### Configuration
For retrieving `chains_config.src.options.start_number` please read the [Retrieve start-block number](#Retrieve-start-block-number)
```json
{
"relay_config": {
"base_dir": ".",
"direction": "both",
"log_level": "debug",
"console_level": "trace",
"log_forwarder": {
"vendor": "",
"address": "",
"level": "info",
"name": ""
},
"log_writer": {
"filename": "data/relay.log",
"maxsize": 100,
"maxage": 0,
"maxbackups": 0,
"localtime": false,
"compress": false
}
},
"chains_config": {
"src": {
"address": "btp://0x63.bsc/0x9Fd9e050682A8795dEa6eE70870A82a513d390Ac",
"endpoint": "https://bsc-node",
"key_store": "${BSC_KEYSTORE_FILE}",
"key_password": "-",
"options": {
"db_type": "leveldb",
"db_path": "data",
"start_number": "32489600"
},
"type" : "bsc-hertz"
},
"dst": {
"address": "btp://0x3.icon/cxf1b0808f09138fffdb890772315aeabb37072a8a",
"endpoint": "https://icon-node/api/v3/icon_dex",
"key_store": "${ICON_KEYSTORE_FILE}",
"key_password": "-",
"type" : "icon-btpblock"
}
}
}
```
### Execution
```shell
./bin/relay start -c config.json
```
or, execution with docker
```shell
docker run -d --network=host -v ${BSC_KEYSTORE_FILE}:${BSC_KEYSTORE_FILE_ON_DOCKER} \
-v ${ICON_KEYSTORE_FILE}:${ICON_KEYSTORE_FILE_ON_DOCKER} \
-v ${CONFIG_FILE}:/etc/config/config.json -e RELAY_CONFIG=/etc/config/config.json \
-d btp2-bsc/relay
```
### Retrieve start block number
```shell
node e2edemo/scripts/setup/retrieve-start-block-number.js ${ICON-NODE-RPC-URL} ${BTP-ADDRESS-BMC-ON-BSC} ${BMC-ADDRESS-ON-ICON}
example:) node ./e2edemo/scripts/setup/retrieve-start-block-number.js http://localhost:9080/api/v3/icon_dex btp://0x63.bsc/0x61143C6026C0459847389fB5Cb8f5A6482A6b5D4 cxc762bf1b69625dc98e8a872b8b8dc3468eea28f0
```
or
```shell
1. Retrive BTP Status for BSC
curl --location 'https://icon-rpc-url' \
--header 'Content-Type: application/json' \
--data '{
"jsonrpc": "2.0",
"method": "icx_call",
"id": 1,
"params": {
"to": "cxc762bf1b69625dc98e8a872b8b8dc3468eea28f0" // contract address of bmc on icon
"dataType": "call",
"data": {
"method": "getStatus",
"params": {
"_link": "btp://0x63.bsc/0x61143C6026C0459847389fB5Cb8f5A6482A6b5D4" // btp address of bmc on bsc
}
}
}
}'
// Response
{
"jsonrpc":"2.0",
"result":{
"cur_height": "0xed02bb",
"rx_seq": "0x288",
"tx_seq": "0x362",
"verifier": {
"extra": "0xf86d8401efc080f86601a05af60449fa89cd17ddbd129939db8a46e51d6489a09e370e0849a71f6febabaf01a0fb97f327a8a677837d0eebe25e23d3eb9e9b6b8fbdd39abf42ad5308fd3a18c280a0a38c2f7e262db3b848d742c71647425ec3997dbcf4c319dec783d553ecc82040",
"height": "0x211159b"
}
},
"id":1
}
2. RLP(n)-Decode `extra` field of BTP Status
$decode(f86d8401efc080f86601a05af60449fa89cd17ddbd129939db8a46e51d6489a09e370e0849a71f6febabaf01a0fb97f327a8a677837d0eebe25e23d3eb9e9b6b8fbdd39abf42ad5308fd3a18c280a0a38c2f7e262db3b848d742c71647425ec3997dbcf4c319dec783d553ecc82040)
[
# 1st element means start block number
, // decimals format: 32489600
[
,
,
,
,
Uint8Array(0) [],
]
]
```
## E2E Testing Demo
* Follow the instruction in [End-to-End Testing Demo](e2edemo) folder.
## References
* [ICON BTP Standard](https://github.com/icon-project/IIPs/blob/master/IIPS/iip-25.md)