Public Stream (WS v2)

Access URL

Environment	URL
Sandbox	Public stream: wss://stream-pro.sim.hashkeydev.com/quote/ws/v2
Production	Public stream: wss://stream-pro.hashkey.com/quote/ws/v2

Heartbeat check

When a user's websocket client application successfully connects to HashKey websocket server, the client is recommended to initiate a periodic heartbeat message (ping message) every 10 seconds, which is used to keep alive the connection

Ping message format is as follows:

JSON

// From Sent by the user
{
    "ping": 1748503859938
}

Pong message format is as follows:

JSON

// Public Stream, return server's timestamp
{
    "pong": 1748503865406
}

Data Structure

• Currently only support JSON format.
• Binary format is not yet available

Subscribe

Subscribe

JSON

{
    "topic": "kline",
    "event": "sub",
    "params": {
        "symbol": "ETHUSDT",
        "klineType": "1m"
        
    }
}

Subscription successful

JSON

{
    "topic": "kline",
    "event": "sub",
    "params": {
        "symbol": "BTCUSDT",
        "klineType": "1m",
    },
    "code": "0",
    "msg": "Success"
}

Subscription failed

JSON

{
    "topic": "kline",
    "event": "sub",
    "params": {
        "symbol": "BTCUSDT",
        "klineType": "122m"
    },
    "code": "-100011",
    "msg": "Parameter error!"
}

Unsubscribe

Unsubscribe

JSON

{
    "topic":"kline",
    "event":"cancel",
    "params":{
        "symbol": "BTCUSDT",
        "klineType":"1m"
    }
}

Unsubscribe result

JSON

{
    "topic": "kline",
    "event": "cancel",
    "params": {
        "symbol": "BTCUSDT",
        "klineType": "1m",
    },
    "code": "0",
    "msg": "Success"
}