Update dependency socket.io to v4 - autoclosed

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
socket.io	1.3.7 -> 4.6.1

---

Release Notes

socketio/socket.io

v4.6.1

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Bug Fixes

• properly handle manually created dynamic namespaces (0d0a7a2)
• types: fix nodenext module resolution compatibility (#​4625) (d0b22c6)

Dependencies

• engine.io@~6.4.0 (no change)
• ws@~8.11.0 (no change)

v4.6.0

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Bug Fixes

• add timeout method to remote socket (#​4558) (0c0eb00)
• typings: properly type emits with timeout (f3ada7d)

Features

Promise-based acknowledgements

This commit adds some syntactic sugar around acknowledgements:

• emitWithAck()

try {
  const responses = await io.timeout(1000).emitWithAck("some-event");
  console.log(responses); // one response per client
} catch (e) {
  // some clients did not acknowledge the event in the given delay
}

io.on("connection", async (socket) => {
    // without timeout
  const response = await socket.emitWithAck("hello", "world");

  // with a specific timeout
  try {
    const response = await socket.timeout(1000).emitWithAck("hello", "world");
  } catch (err) {
    // the client did not acknowledge the event in the given delay
  }
});

• serverSideEmitWithAck()

try {
  const responses = await io.timeout(1000).serverSideEmitWithAck("some-event");
  console.log(responses); // one response per server (except itself)
} catch (e) {
  // some servers did not acknowledge the event in the given delay
}

Added in 184f3cf.

Connection state recovery

This feature allows a client to reconnect after a temporary disconnection and restore its state:

• id
• rooms
• data
• missed packets

Usage:

import { Server } from "socket.io";

const io = new Server({
  connectionStateRecovery: {
    // default values
    maxDisconnectionDuration: 2 * 60 * 1000,
    skipMiddlewares: true,
  },
});

io.on("connection", (socket) => {
  console.log(socket.recovered); // whether the state was recovered or not
});

Here's how it works:

• the server sends a session ID during the handshake (which is different from the current id attribute, which is public and can be freely shared)
• the server also includes an offset in each packet (added at the end of the data array, for backward compatibility)
• upon temporary disconnection, the server stores the client state for a given delay (implemented at the adapter level)
• upon reconnection, the client sends both the session ID and the last offset it has processed, and the server tries to restore the state

The in-memory adapter already supports this feature, and we will soon update the Postgres and MongoDB adapters. We will also create a new adapter based on Redis Streams, which will support this feature.

Added in 54d5ee0.

Compatibility (for real) with Express middlewares

This feature implements middlewares at the Engine.IO level, because Socket.IO middlewares are meant for namespace authorization and are not executed during a classic HTTP request/response cycle.

Syntax:

io.engine.use((req, res, next) => {
  // do something

  next();
});

// with express-session
import session from "express-session";

io.engine.use(session({
  secret: "keyboard cat",
  resave: false,
  saveUninitialized: true,
  cookie: { secure: true }
}));

// with helmet
import helmet from "helmet";

io.engine.use(helmet());

A workaround was possible by using the allowRequest option and the "headers" event, but this feels way cleaner and works with upgrade requests too.

Added in 24786e7.

Error details in the disconnecting and disconnect events

The disconnect event will now contain additional details about the disconnection reason.

io.on("connection", (socket) => {
  socket.on("disconnect", (reason, description) => {
    console.log(description);
  });
});

Added in 8aa9499.

Automatic removal of empty child namespaces

This commit adds a new option, "cleanupEmptyChildNamespaces". With this option enabled (disabled by default), when a socket disconnects from a dynamic namespace and if there are no other sockets connected to it then the namespace will be cleaned up and its adapter will be closed.

import { createServer } from "node:http";
import { Server } from "socket.io";

const httpServer = createServer();
const io = new Server(httpServer, {
  cleanupEmptyChildNamespaces: true
});

Added in 5d9220b.

A new "addTrailingSlash" option

The trailing slash which was added by default can now be disabled:

import { createServer } from "node:http";
import { Server } from "socket.io";

const httpServer = createServer();
const io = new Server(httpServer, {
  addTrailingSlash: false
});

In the example above, the clients can omit the trailing slash and use /socket.io instead of /socket.io/.

Added in d0fd474.

Performance Improvements

• precompute the WebSocket frames when broadcasting (da2b542)

Dependencies

• engine.io@~6.4.0 (diff)
• ws@~8.11.0 (diff)

v4.5.4

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This release contains a bump of:

• engine.io in order to fix CVE-2022-41940
• socket.io-parser in order to fix CVE-2022-2421.

Dependencies

• engine.io@~6.2.1 (diff)
• ws@~8.2.3 (no change)

v4.5.3

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Bug Fixes

• typings: accept an HTTP2 server in the constructor (d3d0a2d)
• typings: apply types to "io.timeout(...).emit()" calls (e357daf)

v4.5.2

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Bug Fixes

• prevent the socket from joining a room after disconnection (18f3fda)
• uws: prevent the server from crashing after upgrade (ba497ee)

v4.5.1

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Bug Fixes

• forward the local flag to the adapter when using fetchSockets() (30430f0)
• typings: add HTTPS server to accepted types (#​4351) (9b43c91)

v4.5.0

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Bug Fixes

• typings: ensure compatibility with TypeScript 3.x (#​4259) (02c87a8)

Features

• add support for catch-all listeners for outgoing packets (531104d)

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

Syntax:

socket.onAnyOutgoing((event, ...args) => {
  console.log(event);
});

• broadcast and expect multiple acks (8b20457)

Syntax:

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

• add the "maxPayload" field in the handshake details (088dcb4)

So that clients in HTTP long-polling can decide how many packets they have to send to stay under the maxHttpBufferSize
value.

This is a backward compatible change which should not mandate a new major revision of the protocol (we stay in v4), as
we only add a field in the JSON-encoded handshake data:

0{"sid":"lv_VI97HAXpY6yYWAAAC","upgrades":["websocket"],"pingInterval":25000,"pingTimeout":5000,"maxPayload":1000000}

4.4.1 (2022-01-06)

Bug Fixes

• types: make RemoteSocket.data type safe (#​4234) (770ee59)
• types: pass SocketData type to custom namespaces (#​4233) (f2b8de7)

v4.4.1

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Bug Fixes

• types: make RemoteSocket.data type safe (#​4234) (770ee59)
• types: pass SocketData type to custom namespaces (#​4233) (f2b8de7)

v4.4.0

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Bug Fixes

• only set 'connected' to true after middleware execution (02b0f73)

Features

• add an implementation based on uWebSockets.js (c0d8c5a)
• add timeout feature (f0ed42f)
• add type information to socket.data (#​4159) (fe8730c)

4.3.2 (2021-11-08)

Bug Fixes

• fix race condition in dynamic namespaces (#​4137) (9d86397)

4.3.1 (2021-10-16)

Bug Fixes

• fix server attachment (#​4127) (0ef2a4d)

v4.3.2

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Bug Fixes

• fix race condition in dynamic namespaces (#​4137) (9d86397)

v4.3.1

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Bug Fixes

• fix server attachment (#​4127) (0ef2a4d)

v4.3.0

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Bug Fixes

• typings: add name field to cookie option (#​4099) (033c5d3)
• send volatile packets with binary attachments (dc81fcf)

Features

• serve ESM bundle (60edecb)

v4.2.0

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Bug Fixes

• typings: allow async listener in typed events (ccfd8ca)

Features

• ignore the query string when serving client JavaScript (#​4024) (24fee27)

4.1.3 (2021-07-10)

Bug Fixes

• fix io.except() method (94e27cd)
• remove x-sourcemap header (a4dffc6)

4.1.2 (2021-05-17)

Bug Fixes

• typings: ensure compatibility with TypeScript 3.x (0cb6ac9)
• ensure compatibility with previous versions of the adapter (a2cf248)

4.1.1 (2021-05-11)

Bug Fixes

• typings: properly type server-side events (b84ed1e)
• typings: properly type the adapter attribute (891b187)

v4.1.3

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Bug Fixes

• fix io.except() method (94e27cd)
• remove x-sourcemap header (a4dffc6)

v4.1.2

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Bug Fixes

• typings: ensure compatibility with TypeScript 3.x (0cb6ac9)
• ensure compatibility with previous versions of the adapter (a2cf248)

v4.1.1

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Bug Fixes

• typings: properly type server-side events (b84ed1e)
• typings: properly type the adapter attribute (891b187)

v4.1.0

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Features

• add support for inter-server communication (93cce05)
• notify upon namespace creation (499c892)
• add a "connection_error" event (7096e98, from engine.io)
• add the "initial_headers" and "headers" events (2527543, from engine.io)

Performance Improvements

• add support for the "wsPreEncoded" writing option (dc381b7)

4.0.2 (2021-05-06)

Bug Fixes

• typings: make "engine" attribute public (b81ce4c)
• properly export the Socket class (d65b6ee)

4.0.1 (2021-03-31)

Bug Fixes

• typings: add fallback to untyped event listener (#​3834) (a11152f)
• typings: update return type from emit (#​3843) (1a72ae4)

v4.0.2

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Bug Fixes

• typings: make "engine" attribute public (b81ce4c)
• properly export the Socket class (d65b6ee)

v4.0.1

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Bug Fixes

• typings: add fallback to untyped event listener (#​3834) (a11152f)
• typings: update return type from emit (#​3843) (1a72ae4)

v4.0.0

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Bug Fixes

• make io.to(...) immutable (ac9e8ca)

Features

• add some utility methods (b25495c)
• add support for typed events (#​3822) (0107510)
• allow to exclude specific rooms when broadcasting (#​3789) (7de2e87)
• allow to pass an array to io.to(...) (085d1de)

3.1.2 (2021-02-26)

Bug Fixes

• ignore packets received after disconnection (494c64e)

3.1.1 (2021-02-03)

Bug Fixes

• properly parse the CONNECT packet in v2 compatibility mode (6f4bd7f)
• typings: add return types and general-case overload signatures (#​3776) (9e8f288)
• typings: update the types of "query", "auth" and "headers" (4f2e9a7)

v3.1.2

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Bug Fixes

• ignore packets received after disconnection (494c64e)

v3.1.1

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Bug Fixes

• properly parse the CONNECT packet in v2 compatibility mode (6f4bd7f)
• typings: add return types and general-case overload signatures (#​3776) (9e8f288)
• typings: update the types of "query", "auth" and "headers" (4f2e9a7)

v3.1.0

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Features

• confirm a weak but matching ETag (#​3485) (161091d)
• esm: export the Namespace and Socket class (#​3699) (233650c)
• add support for Socket.IO v2 clients (9925746)
• add room events (155fa63)

Bug Fixes

• allow integers as event names (1c220dd)

2.4.1 (2021-01-07)

Reverts

• fix(security): do not allow all origins by default (a169050)

3.0.5 (2021-01-05)

Bug Fixes

• properly clear timeout on connection failure (170b739)

Reverts

• restore the socket middleware functionality (bf54327)

v3.0.5

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Bug Fixes

• properly clear timeout on connection failure (170b739)

Reverts

• restore the socket middleware functionality (bf54327)

v3.0.4

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v3.0.3

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v3.0.2

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Bug Fixes

• merge Engine.IO options (43705d7)

v3.0.1

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Bug Fixes

• export ServerOptions and Namespace types (#​3684) (f62f180)
• typings: update the signature of the emit method (50671d9)

v3.0.0

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Bug Fixes

• close clients with no namespace (91cd255)

Features

• emit an Error object upon middleware error (54bf4a4)
• serve msgpack bundle (aa7574f)
• add support for catch-all listeners (5c73733)
• make Socket#join() and Socket#leave() synchronous (129c641)
• remove prod dependency to socket.io-client (7603da7)
• move binary detection back to the parser (669592d)
• add ES6 module export (8b6b100)
• do not reuse the Engine.IO id (2875d2c)
• remove Server#set() method (029f478)
• remove Socket#rooms object (1507b41)
• remove the 'origins' option (a8c0600)
• remove the implicit connection to the default namespace (3289f7e)
• throw upon reserved event names (4bd5b23)

BREAKING CHANGES

• the Socket#use() method is removed (see 5c73733)

• Socket#join() and Socket#leave() do not accept a callback argument anymore.

Before:

socket.join("room1", () => {
 io.to("room1").emit("hello");
});

After:

socket.join("room1");
io.to("room1").emit("hello");
// or await socket.join("room1"); for custom adapters

• the "connected" map is renamed to "sockets"
• the Socket#binary() method is removed, as this use case is now covered by the ability to provide your own parser.
• the 'origins' option is removed

Before:

new Server(3000, {
  origins: ["https://example.com"]
});

The 'origins' option was used in the allowRequest method, in order to
determine whether the request should pass or not. And the Engine.IO
server would implicitly add the necessary Access-Control-Allow-xxx
headers.

After:

new Server(3000, {
  cors: {
    origin: "https://example.com",
    methods: ["GET", "POST"],
    allowedHeaders: ["content-type"]
  }
});

The already existing 'allowRequest' option can be used for validation:

new Server(3000, {
  allowRequest: (req, callback) => {
    callback(null, req.headers.referer.startsWith("https://example.com"));
  }
});

• Socket#rooms is now a Set instead of an object

• Namespace#connected is now a Map instead of an object

• there is no more implicit connection to the default namespace:

// client-side
const socket = io("/admin");

// server-side
io.on("connect", socket => {
  // not triggered anymore
})

io.use((socket, next) => {
  // not triggered anymore
});

io.of("/admin").use((socket, next) => {
  // triggered
});

• the Server#set() method was removed

This method was kept for backward-compatibility with pre-1.0 versions.

v2.5.0

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⚠️ WARNING ⚠️

The default value of the maxHttpBufferSize option has been decreased from 100 MB to 1 MB, in order to prevent attacks by denial of service.

Security advisory: GHSA-j4f2-536g-r55m

Bug Fixes

• fix race condition in dynamic namespaces (05e1278)
• ignore packet received after disconnection (22d4bdf)
• only set 'connected' to true after middleware execution (226cc16)
• prevent the socket from joining a room after disconnection (f223178)

4.5.1 (2022-05-17)

Bug Fixes

• forward the local flag to the adapter when using fetchSockets() (30430f0)
• typings: add HTTPS server to accepted types (#​4351) (9b43c91)

v2.4.1

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Reverts

• fix(security): do not allow all origins by default (a169050)

v2.4.0

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Bug Fixes

• security: do not allow all origins by default (f78a575)
• properly overwrite the query sent in the handshake (d33a619)

3.0.4 (2020-12-07)

3.0.3 (2020-11-19)

3.0.2 (2020-11-17)

Bug Fixes

• merge Engine.IO options (43705d7)

3.0.1 (2020-11-09)

Bug Fixes

• export ServerOptions and Namespace types (#​3684) (f62f180)
• typings: update the signature of the emit method (50671d9)

v2.3.0

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This release mainly contains a bump of the engine.io and ws packages, but no additional features.

v2.2.0

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Features

• add cache-control header when serving the client source (#​2907) (b00ae50)

Bug fixes

• throw an error when trying to access the clients of a dynamic namespace (#​3355) (a7fbd1a)

v2.1.1

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Features

• add local flag to the socket object (#​3129) (1decae3)

socket.local.to('room101').emit(/* */);

v2.1.0

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Features

• add a 'binary' flag (#​3185) (f48a06c)

// by default, the object is recursively scanned to check whether it contains some binary data
// in the following example, the check is skipped in order to improve performance
socket.binary(false).emit('plain-object', object);

// it also works at the namespace level
io.binary(false).emit('plain-object', object);

• add support for dynamic namespaces (#​3195) (c0c79f0)

io.of(/^\/dynamic-\d+$/).on('connect', (socket) => {
  // socket.nsp.name = '/dynamic-101'
});

// client-side
const client = require('socket.io-client')('/dynamic-101');

Bug fixes

• properly emit 'connect' when using a custom namespace (#​3197) (f4fc517)
• include the protocol in the origins check (#​3198) (1f1d64b)

Important note ⚠️ from Engine.IO 3.2.0 release

There are two non-breaking changes that are somehow quite important:

• ws was reverted as the default wsEngine (https://github.com/socketio/engine.io/pull/550), as there was several blocking issues with uws. You can still use uws by running npm install uws --save in your project and using the wsEngine option:

var engine = require('engine.io');
var server = engine.listen(3000, {
  wsEngine: 'uws'
});

• pingTimeout now defaults to 5 seconds (instead of 60 seconds): https://github.com/socketio/engine.io/pull/551

v2.0.4

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Bug fixes

• do not throw when receiving an unhandled error packet (#​3038)
• reset rooms object before broadcasting from namespace (#​3039)

Links:

• Milestone: 2.0.4
• Diff: 2.0.3...2.0.4
• Client release: 2.0.4
• Diff engine.io: -
• Diff ws: -

v2.0.3

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Bug fixes

• reset rooms object before broadcasting (#​2970)
• fix middleware initialization (#​2969)

Links:

• Milestone: 2.0.3
• Diff: 2.0.2...2.0.3
• Client release: 2.0.3
• Diff engine.io: -
• Diff ws: -

v2.0.2

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Bug fixes

• fix timing issues with middleware (#​2948)

Links:

• Milestone: 2.0.2
• Diff: 2.0.1...2.0.2
• Client release: 2.0.2
• Diff engine.io: -
• Diff ws: -

v2.0.1

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Bug fixes

- update path of client file (#​2934)

Links:

• Milestone: 2.0.1
• Diff: 2.0.0...2.0.1
• Client release: 2.0.1
• Diff engine.io: -
• Diff ws: -

v2.0.0

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This major release brings several performance improvements:

• uws is now the default Websocket engine. It should bring significant improvement in performance (particularly in terms of memory consumption) (https://github.com/socketio/engine.io/releases/tag/2.0.0)

• the Engine.IO and Socket.IO handshake packets were merged, reducing the number of roundtrips necessary to establish a connection. (#​2833)

• it is now possible to provide a custom parser according to the needs of your application (#​2829). Please take a look at the example for more information.

Please note that this release is not backward-compatible, due to:

• a breaking change related to utf-8 encoding in engine.io-parser (https://github.com/socketio/engine.io-parser/pull/81)
• an update to make the socket id on the client match the id on the server-side (https://github.com/socketio/socket.io-client/pull/1058)

Please also note that if you are using a self-signed certificate, rejectUnauthorized now defaults to true (https://github.com/socketio/engine.io-client/pull/558).

Finally, the API documentation is now in the repository (here), and the content of the website here. Do not hesitate if you see something wrong or missing!

The full list of changes:

• [feat] Move binary detection to the parser (#​2923)
• [feat] Allow to join several rooms at once (#​2879)
• [feat] Merge Engine.IO and Socket.IO handshake packets (#​2833)
• [feat] Allow the use of custom parsers (#​2829)
• [fix] Use path.resolve by default and require.resolve as a fallback (#​2797) (by @​a-lucas)
• [fix] Properly close the connection on error (#​2681) (by @​Nibbler999)
• [fix] Prevent null from being accepted as argument (#​2606) (by @​ianbrode)
• [perf] Use shared instance of the encoder (#​2825) (by @​Nibbler999)
• [perf] Reset properties instead of deleting them (#​2826) (by @​Nibbler999)
• [perf] micro-optimisations (#​2793) (by @​billouboq)
• [chore] Merge history of 1.7.x and 0.9.x branches (#​2930)
• [chore] Added backers and sponsors on the README (#​2933) (by @​xdamman)
• [chore] Bump dependencies (#​2926)
• [chore] Bump socket.io-adapter to version 1.0.0 (#​2867)
• [chore] Bump engine.io to version 2.0.2 (#​2864)
• [chore] Bump engine.io to version 2.0.0 (#​2832) (by @​sgress454)
• [chore] Update issue template with fiddle (#​2811)
• [chore] Update copyright year LICENSE to 2017 (#​2803) (by @​isabellatea)
• [docs] Add an example of custom parser (#​2929)
• [docs] Replace non-breaking space with proper whitespace (#​2913) (by @​epicTCK)
• [docs] Update emit cheatsheet (#​2906) (by @​FarazPatankar)
• [docs] Explicitly document that Server extends EventEmitter (#​2874) (by @​i8-pi)
• [docs] Add server.engine.generateId attribute (#​2880) (by @​efkan)
• [docs] Fix wrong space character in README (#​2900) (by @​SimenB)
• [docs] Fix documentation for 'connect' event (#​2898) (by @​swhgoon)
• [docs] Add webpack build example (#​2828)
• [docs] Update the wording to match the code example (#​2853) (by @​timruffles)
• [docs] Small addition to the Express Readme Part (#​2846) (by @​H3rby7)
• [docs] Add a 'Features' section in the README (#​2824)
• [docs] Add httpd cluster example (#​2819)
• [docs] Add haproxy cluster example (#​2818)
• [docs] Add nginx cluster example (#​2817)
• [docs] Implement whiteboard example (#​2810)
• [docs] Fix documentation for local flag (#​2816)
• [docs] Add emit cheatsheet (#​2815)
• [docs] Add pingInterval/pingTimeout/transports options in the API documentation (#​2814)
• [docs] Add an example for socket.join() method (#​2813)
• [docs] Fix a typo on clients method in the API documentation (#​2812)
• [docs] Fix wrong argument name in API.md (#​2802) (by @​andrea11)
• [docs] Add install script on Readme.md (#​2780) (by @​bananaappletw)
• [docs] API documentation (#​2784)

Besides, we are proud to announce that Socket.IO is now a part of open collective: https://opencollective.com/socketio. More on that later.

v1.7.4

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• [chore] Bump engine.io to version 1.8.4

v1.7.3

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• [chore] Bump engine.io-client to version 1.8.3

v1.7.2

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• [chore] Bump engine.io to version 1.8.2 (#​2782)
• [fix] Fixes socket.use error packet (#​2772)

v1.7.1

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(following socket.io-client update)

v1.7.0

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• [docs] Comment connected socket availability for adapters (#​2081)
• [docs] Fixed grammar issues in the README.md (#​2159)
• [feature] serve sourcemap for socket.io-client (#​2482)
• [feature] Add a local flag (#​2628)
• [chore] Bump engine.io to version 1.8.1 (#​2765)
• [chore] Update client location and serve minified file (#​2766)

v1.6.0

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• [fix] Make ETag header comply with standard. (#​2603)
• [feature] Loading client script on demand. (#​2567)
• [test] Fix leaking clientSocket (#​2721)
• [feature] Add support for all event emitter methods (#​2601)
• [chore] Update year to 2016 (#​2456)
• [feature] Add support for socket middleware (#​2306)
• [feature] add support for Server#close(callback) (#​2748)
• [fix] Don't drop query variables on handshake (#​2745)
• [example] Add disconnection/reconnection logs to the chat example (#​2675)
• [perf] Minor code optimizations (#​2219)
• [chore] Bump debug to version 2.3.3 (#​2754)
• [chore] Bump engine.io to version 1.8.0 (#​2755)
• [chore] Bump socket.io-adapter to version 0.5.0 (#​2756)

v1.5.1

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• [fix] Avoid swallowing exceptions thrown by user event handlers (#​2682)
• [test] Use client function to unify client in test script (#​2731)
• [docs] Add link to LICENSE (#​2221)
• [docs] Fix JSDoc of optional parameters (#​2465)
• [docs] Fix typo (#​2724)
• [docs] Link readme npm package badge to npm registry page (#​2612)
• [docs] Minor fixes (#​2526)
• [chore] Bump socket.io-parser to 2.3.0 (#​2730)
• [chore] Add Github issue and PR templates (#​2733)
• [chore] Bump engine.io to 1.7.2 (#​2729)
• [chore] Bump socket.io-parser to 2.3.1 (#​2734)

v1.5.0

Compare Source

• [feature] stop append /# before id when no namespace (#​2509)
• [feature] Add a 'disconnecting' event to access to socket.rooms upon disconnection (#​2332)
• [fix] Fix query string management (#​2422)
• [fix] add quote to exec paths, prevent error when spaces in path (#​2508)
• [docs] Prevent mixup for new programmers (#​2599)
• [example] Fix chat display in Firefox (#​2477)
• [chore] Add gulp & babel in the build process (#​2471)
• [chore] Bump engine.io to 1.7.0 (#​2707)
• [chore] Remove unused zuul-ngrok dependency (#​2708)
• [chore] Point towards current master of socket.io-client (#​2710)
• [chore] Restrict files included in npm package (#​2709)
• [chore] Link build badge to master branch (#​2549)

v1.4.8

[Compare Source](https://togithub.com/socketio/socke

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