apollo-link-ws

WebSocket Link

Purpose

An Apollo Link to allow sending a request over a web socket.

Installation

npm install apollo-link-ws --save

Usage

import WSLink from "apollo-link-ws";
import { SubscriptionClient } from 'subscriptions-transport-ws';

const GRAPHQL_ENDPOINT = 'ws://localhost:3000/graphql';

const client = new SubscriptionClient(GRAPHQL_ENDPOINT, {
  reconnect: true,
});

const link = new WSLink(client);

Options

WS Link takes either a subscription client or an object with three options on it to customize the behavoir of the link.

uri: string; options?: ClientOptions; webSocketImpl?: any;

name	value	default	required
uri	string	NA	false
options	Subscription ClientOptions	NA	false
webSocketImpl	WebSocket implementation	NA	false

By default, this link uses the subscriptions-transport-ws library for the transport.

Context

The WS Link does not use any keys on the context.