> For the complete documentation index, see [llms.txt](https://docs.compendium.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.compendium.finance/pendax/using-pendax-sdk/blofin-functions/websocket.md).

# Websocket

## BlofinSocket Object

#### Constructor:

```javascript
 let myBlofinSocket = new BlofinSocket(options);
```

#### Usage:

```javascript
import { BlofinSocket } from "./dev-package/sockets/blofinsocket.js";

  let onOpen = (options) => {
  	console.log("Hello World");
  }

  const exampleOpts = new BlofinSocket({
    key: "myKey",
    secret: "mySecret",
    passphrase: "myPassphrase",
    isPrivate: "true",
    clientOnOpen: onOpen
  });

  let myBlofinSocket = new BlofinSocket(exampleOpts);


```

#### Options:

* apiKey: String
  * Given on creation of API key. Required
* secret: String
  * Secret Key. Required if using private channels
* passphrase: String
  * Passphrased created by user. Required if using private channels
* isPrivate: Boolean
  * Indicates whether to use private channels. False by default
* clientOnOpen: Function(options)
  * Function that takes the options given in the constructor as a parameter and should execute on creation of the websocket once finished opening
* clientOnMessage: Function(options, msg)
  * Function that takes the options given in the constructor and an incoming message as parameters and should execute on reception of said message
* clientOnError: Function(options, msg)
  * Function that takes the options given in the constructor and an incoming error as parameters and should execute on reception of said error
* clientOnClose: Function(code, msg, options)
  * Function that takes a closing code, a message, and the options given in the constructor as parameters and should execute on close

## Login

{% hint style="info" %}
Please refer to the official BloFin API Docs for additional info.

<https://docs.blofin.com/index.html#login>
{% endhint %}

#### Function name:

```javascript
login()
```

#### Usage:

```javascript
let onOpen = (options) => {
  options.socket.login();
}

  let myBlofinSocket = new BlofinSocket({
    key: "myKey",
    secret: "mySecret",
    passphrase: "myPassphrase",
    isPrivate: true,
    clientOnOpen: onOpen
  });

```

## Subscribe

{% hint style="info" %}
Please refer to the official BloFin API Docs for additional info.

<https://docs.blofin.com/index.html#subscribe>
{% endhint %}

#### Function name:

```javascript
subscribe(subscriptions)
```

#### Usage:

```javascript
let onOpen = (options) => {
  options.socket.login();
}


let onMessage = (options, msg) => {
  if (msg.event == 'login'){
    options.socket.subscribe({
                    args:
                        [{ channel: 'account'}]
                });
  }
}

  let myBlofinSocket = new BlofinSocket({
    key: "myKey",
    secret: "mySecret",
    passphrase: "myPassphrase",
    isPrivate: true,
    clientOnOpen: onOpen,
    clientOnMessage: onMessage
  });

```

## Unsubscribe

{% hint style="info" %}
Please refer to the official BloFin API Docs for additional info.

<https://docs.blofin.com/index.html#unsubscribe>
{% endhint %}

#### Function name:

```javascript
unsubscribe(subscriptions)
```

#### Usage:

```javascript
let onOpen = (options) => {
  options.socket.subscribe({

    args:
        [{ 
          channel: 'tickers',
          instId: 'BTC-USDT'
        }]
  });
  }
  
  
  let onMessage = (options, msg) => {
    
    if(msg.event == 'subscribe'){ 
        options.socket.unsubscribe([{ 
          channel: 'tickers',
          instId: 'BTC-USDT'
        }])
    

  }
  

  let myBlofinSocket = new BlofinSocket({
    key: "myKey",
    secret: "mySecret",
    passphrase: "myPassphrase",
    isPrivate: false,
    clientOnOpen: onOpen,
    clientOnMessage: onMessage
  });



```


---

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