# Binance Public API Connector Rust
This is a lightweight library that works as a connector to [Binance public API](https://github.com/binance/binance-spot-api-docs)
- Supported APIs:
- `/api/*`
- `/sapi/*`
- Spot Websocket Market Stream
- Spot User Data Stream
- Test cases and examples
- Customizable base URL and request timeout
- Blocking and Non-blocking clients
- Response Metadata
- Supports HMAC and ED25519 authentications but not RSA authentication.
## RESTful APIs
The Binance Rust Connector exposes two abstraction layers to integrete with Binance RESTful APIs; a high level
abstraction consisting of maintained functions mapped one-to-one with Binance API endpoints, and a low level
generic abstraction for more control over the request.
**High Level Usage Example**
```rust
use env_logger::Builder;
use binance_spot_connector_rust::{
http::Credentials,
hyper::{BinanceHttpClient, Error},
market::{self, klines::KlineInterval},
trade
};
#[tokio::main]
async fn main() -> Result<(), Error> {
Builder::from_default_env()
.filter(None, log::LevelFilter::Info)
.init();
let credentials = Credentials::from_hmac("api-key".to_owned(), "api-secret".to_owned());
let client = BinanceHttpClient::default().credentials(credentials);
// Get candlesticks for BTCUSDT with a 1 minute interval
let data = client.send(market::klines("BTCUSDT", KlineInterval::Minutes1)).await
.expect("Request failed")
.into_body_str().await
.expect("Failed to read response body");
log::info!("{}", data);
// Get the last 10 candlesticks for BTCUSDT with a 1 hour interval
let data = client.send(market::klines("BTCUSDT", KlineInterval::Hours1).limit(10)).await
.expect("Request failed")
.into_body_str().await
.expect("Failed to read response body");
log::info!("{}", data);
// Get account information
let data = client.send(trade::account()).await
.expect("Request failed")
.into_body_str().await
.expect("Failed to read response body");
log::info!("{}", data);
Ok(())
}
```
Examples for other endpoints are available in the `examples` folder.
**Low Level Usage Example**
```rust
use binance_spot_connector_rust::{
http::{request::RequestBuilder, Method},
hyper::{BinanceHttpClient, Error},
};
use env_logger::Builder;
#[tokio::main]
async fn main() -> Result<(), Error> {
Builder::from_default_env()
.filter(None, log::LevelFilter::Info)
.init();
let client = BinanceHttpClient::default();
let builder = RequestBuilder::new(Method::Get, "/api/v3/klines")
.params(vec![("symbol", "BTCUSDT"), ("interval", "1m")]);
// Get candlesticks for BTCUSDT with a 1 minute interval
let data = client
.send(builder)
.await
.expect("Request failed")
.into_body_str()
.await
.expect("Failed to read response body");
log::info!("{}", data);
Ok(())
}
```
## Websocket
```rust
use binance_spot_connector_rust::{
market::klines::KlineInterval, market_stream::kline::KlineStream,
tokio_tungstenite::BinanceWebSocketClient,
};
use env_logger::Builder;
use futures_util::StreamExt;
#[tokio::main]
async fn main() {
Builder::from_default_env()
.filter(None, log::LevelFilter::Info)
.init();
// Establish connection
let (mut conn, _) = BinanceWebSocketClient::connect_async_default()
.await
.expect("Failed to connect");
// Subscribe to streams
conn.subscribe(vec![
&KlineStream::new("BTCUSDT", KlineInterval::Minutes1).into()
])
.await;
// Read messages
while let Some(message) = conn.as_mut().next().await {
match message {
Ok(message) => {
let binary_data = message.into_data();
let data = std::str::from_utf8(&binary_data).expect("Failed to parse message");
log::info!("{:?}", data);
}
Err(_) => break,
}
}
// Disconnect
conn.close().await.expect("Failed to disconnect");
}
```
Examples for other websocket streams are available in the `examples` folder.
### Heartbeat
Once connected, the websocket server sends a ping frame every 3 minutes and requires a response pong frame back within
a 10 minutes period. This package handles the pong responses automatically.
### Testnet
`/api/*` endpoints can be tested in [Spot Testnet](https://testnet.binance.vision/). `/sapi/*` endpoints are not supported.
```rust
let client = BinanceHttpClient::with_url("https://testnet.binance.vision");
```
### Base URL
It's recommended to pass in the `baseUrl` parameter, even in production as Binance provides alternative URLs
in case of performance issues:
- `https://api1.binance.com`
- `https://api2.binance.com`
- `https://api3.binance.com`
### Timeout
The default timeout is 100,000 milliseconds (100 seconds).
### Logging
This library implements the standard rust logging framework which works with a variety of built-in and third-party logging providers.
For more information on how to configure logging in Rust, visit [Rust Log](https://docs.rs/log/latest/log/)
**Usage Example**
```rust
use binance_spot_connector_rust::{
http::Credentials,
hyper::{BinanceHttpClient, Error},
wallet,
};
use env_logger::Builder;
#[tokio::main]
async fn main() -> Result<(), Error> {
Builder::from_default_env()
.filter(None, log::LevelFilter::Debug)
.init();
let credentials = Credentials::from_hmac("api-key".to_owned(), "api-secret".to_owned());
let client = BinanceHttpClient::default().credentials(credentials);
// Get candlesticks for BTCUSDT with a 1 minute interval
let data = client
.send(wallet::system_status())
.await
.expect("Request failed")
.into_body_str()
.await
.expect("Failed to read response body");
Ok(())
}
```
**Sample Output**
```
[2022-02-22T00:00:00Z DEBUG binance_spot_connector_rust::hyper::client] https://api.binance.com/sapi/v1/system/status
[2022-02-22T00:00:00Z DEBUG binance_spot_connector_rust::hyper::client] 200 OK
[2022-02-22T00:00:00Z INFO binance_spot_connector_rust::hyper::client] {"status":0,"msg":"normal"}
```
## Test Cases
```bash
cargo test
```
## Examples
All snippets for spot endpoints and streams can be found in the `examples` folder. Example names are a concatanation of the example directory name and the example file name separated by an underscore.
```bash
cd examples && cargo run --example market_exchange_info
```
## Limitations
Futures and Vanilla Options APIs are not supported:
- /fapi/\*
- /dapi/\*
- /vapi/\*
- Associated Websocket Market and User Data Streams
## Contributing
Contributions are welcome.
If you've found a bug within this project, please open an issue to discuss what you would like to change.
If it's an issue with the API, please open a topic at [Binance Developer Community](https://dev.binance.vision)