socket close when running as client in node

[jkristia]

This is more of a question.

I'm trying to use the library as a client in node / typescript.
I have followed the recipe for 'client usage in node', but I am missing something as I get 'socket closed' error immediately.

// https://github.com/enisdenjo/graphql-ws
import ws from 'ws';
import { createClient } from 'graphql-ws';
import { randomUUID } from 'crypto';

const client = createClient({
	url: 'ws://10.36.83.233:5513/graphql',
	webSocketImpl: ws,
	generateID: () => randomUUID()
});

export const graphql_play = () => {
	const sub = client.subscribe(
		{
			query: 'subscription { Resource { mutation instance { id }}}'
		},
		{
			next: (data) => console.log('data"', data),
			error: (error) => { console.log('error:', error) },
			complete: () => console.log('finished')
		}
	)
}

main from where it is called

import { graphql_play} from './graphql-play'

function wait(): Promise<any> {
    return new Promise( () => {});
}
async function run() {
    console.log('run')
    graphql_play();
    await wait();
    console.log('end')
}

run();

The returned error is

error
CloseEvent {Symbol(kTarget): WebSocket, Symbol(kType): 'close', Symbol(kCode): 1002, Symbol(kReason): '', Symbol(kWasClean): true}
code: 1002
reason: ''
Symbol(kCode): 1002
Symbol(kReason): ''
Symbol(kTarget): WebSocket {_events: {…}, _eventsCount: 4, _maxListeners: undefined, _binaryType: 'nodebuffer', _closeCode: 1002, …}
Symbol(kType): 'close'
Symbol(kWasClean): true
target: WebSocket
type: 'close'
wasClean: true
[[Prototype]]: Event
error: CloseEvent {Symbol(kTarget): WebSocket, Symbol(kType): 'close', Symbol(kCode): 1002, Symbol(kReason): '', Symbol(kWasClean): true}

Same work if I use the deprecated subscription-transport-ws following this boilerplate example

[enisdenjo]

It is very likely that your server does not support graphql-ws.

Note that the deprecated subscriptions-transport-ws and graphql-ws are not cross-compatible, as stated in the readme disclaimer.

[jkristia]

I appreciate you quick response, and I did miss the disclaimer part.
I think you are right about incompatibility issue.
The service I'm trying to connect to is running "apollo-server-express": "^2.14.0",
I will continue using the deprecated package until the serve is upgraded.

Appreciate your help.

[enisdenjo]

If you have control over the server, you can use the "ws server usage with Apollo Server Express" recipe to add graphql-ws support to apollo-server-express.

[jkristia]

yeah, unfortunately I do not have control of that service. But I have requested for an update. Again, thank you for your help