Sourced from socket.io's releases.

socket.io@4.8.1

Due to a change in the bundler configuration, the production bundle (socket.io.min.js) did not support sending and receiving binary data in version 4.8.0. This is now fixed.

Dependencies

• engine.io@~6.6.0 (no change)
• ws@~8.17.1 (no change)

socket.io-client@4.8.1

Bug Fixes

• bundle: do not mangle the "_placeholder" attribute (ca9e994)

Dependencies

• engine.io-client@~6.6.1 (no change)
• ws@~8.17.1 (no change)

socket.io-client@4.8.0

Features

Custom transport implementations

The transports option now accepts an array of transport implementations:

import { io } from "socket.io-client";
import { XHR, WebSocket } from "engine.io-client";
const socket = io({
transports: [XHR, WebSocket]
});

Here is the list of provided implementations:

Transport	Description
Fetch	HTTP long-polling based on the built-in fetch() method.
NodeXHR	HTTP long-polling based on the XMLHttpRequest object provided by the xmlhttprequest-ssl package.
XHR	HTTP long-polling based on the built-in XMLHttpRequest object.
NodeWebSocket	WebSocket transport based on the WebSocket object provided by the ws package.
WebSocket	WebSocket transport based on the built-in WebSocket object.
WebTransport	WebTransport transport based on the built-in WebTransport object.

Usage:

Transport	browser	Node.js	Deno	Bun

... (truncated)

• 91e1c8b chore(release): socket.io@4.8.1
• 8d5528a chore(release): socket.io-client@4.8.1
• 71387e5 refactor(sio-client): reexport transports from the engine
• aead835 refactor(sio): make Namespace._fns private (#5196)
• 029e010 chore(release): engine.io-client@6.6.2
• 4ca6ddb docs(nuxt): update example with latest version
• ca9e994 fix(sio-client): do not mangle the "_placeholder" attribute
• 4865f2e fix(eio-client): prevent infinite loop with Node.js built-in WebSocket
• d4b3dde ci: use Node.js 22
• 3b68658 chore: bump @​fails-components/webtransport to version 1.1.4 (dev)
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