Diff: https://github.com/socketio/socket.io/compare/4.5.0...4.5.1

Related:

- https://github.com/socketio/socket.io/issues/4359
- https://github.com/socketio/sock...

Diff: https://github.com/socketio/socket.io/compare/4.4.1...4.5.0

Release notes: https://github.com/socketio/engine.io/releases/tag/6.2.0
Diff: https://github.com...

Related: https://github.com/socketio/socket.io/issues/4329

Related: https://github.com/socketio/socket.io/issues/3933

Related:

- https://github.com/socketio/socket.io/issues/4325
- https://github.com/dfederm/karma...

This commit handles several edge cases that were silently ignored
before:

- receiving several C...

This is similar to `onAny()`, but for outgoing packets.

Syntax:

```js
socket.onAnyOutgoing((ev...

Syntax:

```js
io.timeout(1000).emit("some-event", (err, responses) => {
// ...
});
```

The a...

Related: https://github.com/socketio/engine.io/security/advisories/GHSA-273r-mgr4-v34f

Labeled tuple elements were added in TypeScript 4.0.

Reference: https://www.typescriptlang.or...

Related: https://github.com/socketio/socket.io/issues/4242

Updating to v2 fails in the CI on Node.js 12 & 14 with the following
error:

> npm ERR! Error wh...

Diff: https://github.com/socketio/socket.io/compare/4.4.0...4.4.1

Related:

- https://github.com/socketio/socket.io/issues/4229
- https://github.com/socketio/s...

Related: https://github.com/socketio/socket.io/issues/4235

So that it can be used by the end users:

```ts
const myMiddleware = ([eventName, ...args]: Even...

The `SocketData` type was only available on the main namespace.

Related: https://github.com/s...

See [1] for detail, in `nodenext` module resolution it requires a
`types` field in `exports` wi...

Related: https://github.com/socketio/socket.io/issues/4213

- remove useless Dockerfile
- clean format
- migrate to @socket.io/redis-adapter

Diff: https://github.com/socketio/socket.io/compare/4.3.2...4.4.0

The ack was not properly removed upon timeout, and could be called
twice.

Related: https://gith...

Usage:

```js
socket.timeout(5000).emit("my-event", (err) => {
if (err) {
// the client di...

`srv.close()` only closes the underlying HTTP server, but this does not
terminate the existing W...

See also: https://github.com/socketio/socket.io-adapter/commit/88eee5948aba94f999405239025f29c75...

The Socket instance is only considered connected when the "connection"
event is emitted, and not...

Usage:

```js
const { App } = require("uWebSockets.js");
const { Server } = require("socket.io")...

Usage:

```js
interface SocketData {
name: string;
age: number;
}

const io = new Se...

Diff: https://github.com/socketio/socket.io/compare/4.3.1...4.3.2

Using an async operation with `io.use()` could lead to the creation of
several instances of a sa...

Diff: https://github.com/socketio/socket.io/compare/4.3.0...4.3.1

The check excluded an HTTPS server from being properly attached.

Related: https://github.com/...

Diff: https://github.com/socketio/socket.io/compare/4.2.0...4.3.0

Related:

- https://github.com/socketio/socket.io-client/commit/0661564dc2005b95843ddb65621b7e89...

Release notes: https://github.com/socketio/engine.io/releases/tag/6.0.0
Diff: https://github.com...

Reference: https://github.com/socketio/engine.io/blob/18a6eb89fbad618760c6bf81387ad421dfd3353b/l...

Related: https://github.com/socketio/socket.io/issues/3447

The binary attachments of volatile packets were discarded (only the
header packet was sent) due ...

Diff: https://github.com/socketio/socket.io/compare/4.1.3...4.2.0

The link will now point towards a sample project, instead of the root
repository.

Related: http...

So that:

```ts
socket.on("my-event", async () => {
// ...
});
```

is valid under the @typesc...

Related: https://github.com/socketio/socket.io/issues/4023

Fixes the following error:

> test/todo-management/todo.tests.ts:275:3 - error TS2582: Cannot ...

Diff: https://github.com/socketio/socket.io/compare/4.1.2...4.1.3

Previously, calling `io.except("theroom").emit(...)` did not exclude
the sockets in the given ro...

This header is useless, as the client bundle already contains a
sourceMappingURL field.

Besides...

See also: https://github.com/nodejs/Release#release-schedule

Diff: https://github.com/socketio/socket.io/compare/4.1.1...4.1.2

Labeled tuple elements were added in TypeScript 4.0.

Reference: https://www.typescriptlang.org/...

Using `[email protected]` with `[email protected]` would lead to
the following error:

> Unc...

Diff: https://github.com/socketio/socket.io/compare/4.1.0...4.1.1

Related: https://github.com/socketio/socket.io/issues/3796

See also: https://github.com/socketio/socket.io/commit/93cce05fb3faf91f21fa71212275c776aa161107

Diff: https://github.com/socketio/socket.io/compare/4.0.2...4.1.0

A "new_namespace" event will be emitted when a new namespace is created:

```js
io.on("new_names...

Syntax:

```js
// server A
io.serverSideEmit("hello", "world");

// server B
io.on("hello", (arg...

Packets that are sent to multiple clients will now be pre-encoded for
the WebSocket transport (w...

Diff: https://github.com/socketio/socket.io/compare/4.0.1...4.0.2

Before this change, `require("socket.io").Socket` would return
"undefined".

Note: having access...

See also: https://socket.io/get-started/basic-crud-application/

Diff: https://github.com/socketio/socket.io/compare/4.0.0...4.0.1

Related: https://github.com/socketio/socket.io/issues/3833

Typed events in Socket.IO 4.0 remove the need for writing type
annotations in callbacks of rese...

```
(channel ? io.to(channel) : io).emit("stuff", message);
```

would no longer compile.

Relat...

Diff: https://github.com/socketio/socket.io/compare/3.1.2...4.0.0

Release notes: https://github.com/socketio/engine.io/releases/tag/5.0.0

Syntax:

```ts
interface ClientToServerEvents {
"my-event": (a: number, b: string, c: number[]...

This commit adds the following methods:

- fetchSockets: returns the matching socket instances

...

In some cases it is necessary to pass an array of rooms instead of a single room.

New syntax:

...

Previously, broadcasting to a given room (by calling `io.to()`) would
mutate the io instance, wh...

New syntax:

```
io.except("room1").emit(...);
io.to("room1").except("room2").emit(...);

socket...

Diff: https://github.com/socketio/socket.io/compare/3.1.1...3.1.2

Related: https://github.com/socketio/socket.io/issues/3095

Related: https://github.com/socketio/socket.io/issues/3793

See also: https://socket.io/get-started/private-messaging-part-4/

See also: https://socket.io/get-started/private-messaging-part-3/

See also: https://socket.io/get-started/private-messaging-part-2/

Diff: https://github.com/socketio/socket.io/compare/3.1.0...3.1.1