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How can I use web-sockets with Angular4? The HttpModule does not support it, so is there a NPM package available that I can use?
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The WebSocket API allows us to communicate between client and server through messages and event-based responses. Its implementation in an Angular project can be done through services and interfaces that allow the connection and management of messages.
You can use wss for secure websocket connection. import { webSocket } from "rxjs/"webSocket; const subject = webSocket("ws://localhost:8081"); This way you have a ready to use subject that you should subscribe to in order to establish the connection with your endpoint and start receiving and sending some data.
Although Socket.IO indeed uses WebSocket for transport when possible, it adds additional metadata to each packet. That is why a WebSocket client will not be able to successfully connect to a Socket.IO server, and a Socket.IO client will not be able to connect to a plain WebSocket server either.
Angular doesn't offer a special object to support WebSockets. But the good news is that WebSocket is supported by all browsers, and you can use it in your Angular4 apps. In this app I was using the ws package on the server (Node.js)and the browser's WebSocket object on the client (see https://github.com/Farata/angular2typescript/blob/master/Angular4/auction/client/src/app/product-detail/websocket.service.ts)
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