Question 1

How to set up ngx-socket-io in an Angular standalone app?

Accepted Answer

Use the provideSocketIo function in your app.config.ts providers, passing a SocketIoConfig object with the server URL and options. This integrates seamlessly with standalone components without NgModule imports.

Question 2

ngx-socket-io vs Angular's native WebSocket: which is better?

Accepted Answer

ngx-socket-io is ideal if you're using Socket.IO on the server for features like rooms, reconnection, and fallbacks, while Angular's native WebSocket is lighter for raw WebSocket connections without Socket.IO's extras.

Question 3

How to handle type-safe events with ngx-socket-io?

Accepted Answer

Define TypeScript interfaces for listen and emit events, then inject the Socket service with those types. Alternatively, use inline typing in method calls, as detailed in the Typings section of the README.

Question 4

Does ngx-socket-io work with Angular server-side rendering (SSR)?

Accepted Answer

The README doesn't explicitly mention SSR support, and zoneless mode requires manual change detection, which might complicate SSR implementations. It's best tested in client-side Angular apps.

Question 5

How to manually trigger change detection in zoneless ngx-socket-io?

Accepted Answer

Inject ApplicationRef and call appRef.tick() inside event subscriptions to update the UI. This is necessary because ngx-socket-io no longer depends on zone.js for automatic change detection.

Question 6

Best way to manage multiple socket endpoints in Angular with ngx-socket-io?

Accepted Answer

Extend the base Socket class for each endpoint, providing different URLs in the constructor, and inject these custom services where needed, as shown in the multiple sockets example.

Question 7

How to unsubscribe from events to prevent memory leaks in ngx-socket-io?

Accepted Answer

Use RxJS operators like takeUntilDestroyed or store subscriptions and call unsubscribe in ngOnDestroy. The fromEvent method automatically removes listeners only when all subscriptions are unsubscribed.

ngx-socket-io

What is ngx-socket-io?

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