@dxfeed/dxlink-websocket-client

Client implementation for the dxLink WebSocket transport protocol.

Install

``bash
npm install @dxfeed/dxlink-websocket-client
`

Usage

Import library into your project.

`typescript
import { DXLinkWebSocketClient } from '@dxfeed/dxlink-websocket-client'
`

$3

Create instance of the client.

`typescript
const client = new DXLinkWebSocketClient()
`

Connect to the server.

`typescript
client.connect('wss://demo.dxfeed.com/dxlink-ws')
`

Provide auth token if required by the server.

`typescript
client.setAuthToken(token)
`

$3

Open isolated channel to service within single connection.

`typescript
const channel = client.openChannel('FEED', {
contract: 'AUTO',
})
`

Send message to the channel.

`typescript
channel.send({
type: 'FEED_SUBSCRIPTION',
add: [
{
type: 'Quote',
symbol: 'AAPL',
},
],
})
`

Add subscription to the channel.

`typescript
const sub1 = {
type: 'Quote',
symbol: 'AAPL',
}

channel.subscription({
add: [sub1],
})
`

Remove subscription from the channel.

`typescript
channel.subscription({
remove: [sub1],
})
`

Receive messages from the channel.

`typescript
channel.addMessageListener((message) => {
if (message.type === 'FEED_DATA') {
console.log(message.data)
}
})
``