GDAX Heartbeat Channel Failed to subscribe error

Question

I'm looking at the documentation on Coinbase's Github for the GDAX API and trying to subscribe to the heartbeat channel, this is the code:

var websocket = new Gdax.WebsocketClient(
    ['BTC-USD'],
    'wss://ws-feed.gdax.com',
    {
        key: API_KEY,
        secret: API_SECRET,
        passphrase: API_PASSPHRASE,
    },
    { heartbeat: true }
)
  webSocket.on('message', data => {
    console.log(data);
  });

I get this Error:

{ 
    type: 'error',
    message: 'Failed to subscribe',
    reason: 'You need to specify at least one product ID for channel heartbeat'
}

Answer 1

You to include "product_ids" : ["BTC-GBP"] as a field in the Json request.

Try this, it should work.

{
    "type": "subscriptions",
    "channels": [        
        {
            "name": "heartbeat",
            "product_ids": [
                "ETH-USD",
                "ETH-EUR"
            ],
        }
    ]
}