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Supply Chain Attack Detected in Solana's web3.js Library
A supply chain attack has been detected in versions 1.95.6 and 1.95.7 of the popular @solana/web3.js library.
isomorphic-ws
Advanced tools
The isomorphic-ws npm package provides a WebSocket client that works both in the browser and on the server (Node.js). It is designed to offer a consistent WebSocket API so that developers can write code that is agnostic to the environment in which it runs. This is particularly useful for building isomorphic JavaScript applications that can run on both the client-side and server-side without modification.
Creating WebSocket connections
This feature allows you to create WebSocket connections to a server. The code sample demonstrates how to establish a connection, and handle open, message, and close events.
const WebSocket = require('isomorphic-ws');
const ws = new WebSocket('ws://www.host.com/path');
ws.onopen = function () {
console.log('WebSocket is open now.');
};
ws.onmessage = function (event) {
console.log('Received message: ' + event.data);
};
ws.onclose = function () {
console.log('WebSocket is closed now.');
};
Sending messages through WebSocket
This feature allows you to send messages to the server over the WebSocket connection. The code sample shows how to send a message to the server once the WebSocket connection is established and open.
const WebSocket = require('isomorphic-ws');
const ws = new WebSocket('ws://www.host.com/path');
ws.onopen = function () {
ws.send('Hello Server!');
};
Receiving messages from WebSocket
This feature allows you to receive messages from the server over the WebSocket connection. The code sample demonstrates how to listen for messages from the server and log them to the console.
const WebSocket = require('isomorphic-ws');
const ws = new WebSocket('ws://www.host.com/path');
ws.onmessage = function (event) {
console.log('Received message: ' + event.data);
};
The 'ws' package is a popular WebSocket library for Node.js. Unlike isomorphic-ws, it is not designed to work in the browser environment. It is a robust and well-maintained library that offers a wide range of features including binary data support, extensions, and permessage-deflate compression.
The 'socket.io-client' package is the client-side library of Socket.IO, which enables real-time bidirectional event-based communication. It is more feature-rich than isomorphic-ws, providing features like auto-reconnection, event broadcasting, and rooms. However, it requires a Socket.IO server to work with, whereas isomorphic-ws can connect to any standard WebSocket server.
The 'websocket' package provides both client and server implementations of the WebSocket protocol. It is similar to isomorphic-ws in that it can be used in both Node.js and browser environments. However, it offers a more complex API and additional features like WebSocket server implementation, which isomorphic-ws does not provide.
Isomorphic implementation of WebSocket.
It uses:
Before using this module you should know that
ws
is not perfectly API compatible with
WebSocket,
you should always test your code against both Node and browsers.
Some major differences:
Server
implementation in browsersoptions
argument in browsersYou need to install both this package and ws:
> npm i isomorphic-ws ws
Then just require this package:
const WebSocket = require('isomorphic-ws');
const ws = new WebSocket('wss://echo.websocket.org/');
ws.onopen = function open() {
console.log('connected');
ws.send(Date.now());
};
ws.onclose = function close() {
console.log('disconnected');
};
ws.onmessage = function incoming(data) {
console.log(`Roundtrip time: ${Date.now() - data.data} ms`);
setTimeout(function timeout() {
ws.send(Date.now());
}, 500);
};
FAQs
Isomorphic implementation of WebSocket
We found that isomorphic-ws demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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