chore(release): socket.io-client@4.8.3

Diff: https://github.com/socketio/socket.io/compare/socket.io-client@4.8.2...socket.io-client@4.8.3

packages/engine.io-client/CHANGELOG.md

@@ -1,7 +1,8 @@
-# History
+# Changelog
 
 | Version                                                                                                     | Release date   | Bundle size (UMD min+gzip) |
 |-------------------------------------------------------------------------------------------------------------|----------------|----------------------------|
+| [6.6.4](#664-2025-12-23)                                                                                    | December 2025  | `8.7 KB`                   |
 | [6.6.3](#663-2025-01-23)                                                                                    | January 2025   | `8.7 KB`                   |
 | [6.6.2](#662-2024-10-23)                                                                                    | October 2024   | `8.7 KB`                   |
 | [6.6.1](#661-2024-09-21)                                                                                    | September 2024 | `8.7 KB`                   |
@@ -39,7 +40,24 @@
 | [4.1.1](#411-2021-02-02)                                                                                    | February 2021  | `9.1 KB`                   |
 | [4.1.0](#410-2021-01-14)                                                                                    | January 2021   | `9.1 KB`                   |
 
-# Release notes
+
+## [6.6.4](https://github.com/socketio/socket.io/compare/engine.io-client@6.6.3...engine.io-client@6.6.4) (2025-12-23)
+
+This release contains a bump of:
+
+- `ws` from `~8.17.1` to `~8.18.3`
+- `debug` from `~4.3.1` to `~4.4.1`
+
+### Bug Fixes
+
+* properly handle port option ([#5241](https://github.com/socketio/socket.io/issues/5241)) ([1da9cdd](https://github.com/socketio/socket.io/commit/1da9cddeab0bf5ce41890d156d73af8194cef656))
+
+
+### Dependencies
+
+- [`ws@~8.18.3`](https://github.com/websockets/ws/releases/tag/8.18.3) ([diff](https://github.com/websockets/ws/compare/8.17.1...8.18.3))
+
+
 
 ## [6.6.3](https://github.com/socketio/socket.io/compare/engine.io-client@6.6.2...engine.io-client@6.6.3) (2025-01-23)
 

packages/engine.io-client/dist/engine.io.js

@@ -1,5 +1,5 @@
 /*!
- * Engine.IO v6.6.3
+ * Engine.IO v6.6.4
  * (c) 2014-2025 Guillermo Rauch
  * Released under the MIT License.
  */
@@ -35,6 +35,54 @@
       writable: !1
     }), e;
   }
+  function _createForOfIteratorHelper(r, e) {
+    var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
+    if (!t) {
+      if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) {
+        t && (r = t);
+        var n = 0,
+          F = function () {};
+        return {
+          s: F,
+          n: function () {
+            return n >= r.length ? {
+              done: !0
+            } : {
+              done: !1,
+              value: r[n++]
+            };
+          },
+          e: function (r) {
+            throw r;
+          },
+          f: F
+        };
+      }
+      throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+    }
+    var o,
+      a = !0,
+      u = !1;
+    return {
+      s: function () {
+        t = t.call(r);
+      },
+      n: function () {
+        var r = t.next();
+        return a = r.done, r;
+      },
+      e: function (r) {
+        u = !0, o = r;
+      },
+      f: function () {
+        try {
+          a || null == t.return || t.return();
+        } finally {
+          if (u) throw o;
+        }
+      }
+    };
+  }
   function _extends() {
     return _extends = Object.assign ? Object.assign.bind() : function (n) {
       for (var e = 1; e < arguments.length; e++) {
@@ -1049,21 +1097,65 @@
       createDebug.namespaces = namespaces;
       createDebug.names = [];
       createDebug.skips = [];
-      var i;
-      var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
-      var len = split.length;
-      for (i = 0; i < len; i++) {
-        if (!split[i]) {
-          // ignore empty strings
-          continue;
+      var split = (typeof namespaces === 'string' ? namespaces : '').trim().replace(/\s+/g, ',').split(',').filter(Boolean);
+      var _iterator = _createForOfIteratorHelper(split),
+        _step;
+      try {
+        for (_iterator.s(); !(_step = _iterator.n()).done;) {
+          var ns = _step.value;
+          if (ns[0] === '-') {
+            createDebug.skips.push(ns.slice(1));
+          } else {
+            createDebug.names.push(ns);
+          }
         }
-        namespaces = split[i].replace(/\*/g, '.*?');
-        if (namespaces[0] === '-') {
-          createDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));
+      } catch (err) {
+        _iterator.e(err);
+      } finally {
+        _iterator.f();
+      }
+    }
+
+    /**
+     * Checks if the given string matches a namespace template, honoring
+     * asterisks as wildcards.
+     *
+     * @param {String} search
+     * @param {String} template
+     * @return {Boolean}
+     */
+    function matchesTemplate(search, template) {
+      var searchIndex = 0;
+      var templateIndex = 0;
+      var starIndex = -1;
+      var matchIndex = 0;
+      while (searchIndex < search.length) {
+        if (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {
+          // Match character or proceed with wildcard
+          if (template[templateIndex] === '*') {
+            starIndex = templateIndex;
+            matchIndex = searchIndex;
+            templateIndex++; // Skip the '*'
+          } else {
+            searchIndex++;
+            templateIndex++;
+          }
+        } else if (starIndex !== -1) {
+          // eslint-disable-line no-negated-condition
+          // Backtrack to the last '*' and try to match more characters
+          templateIndex = starIndex + 1;
+          matchIndex++;
+          searchIndex = matchIndex;
         } else {
-          createDebug.names.push(new RegExp('^' + namespaces + '$'));
+          return false; // No match
         }
       }
+
+      // Handle trailing '*' in template
+      while (templateIndex < template.length && template[templateIndex] === '*') {
+        templateIndex++;
+      }
+      return templateIndex === template.length;
     }
 
     /**
@@ -1073,7 +1165,7 @@
     * @api public
     */
     function disable() {
-      var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
+      var namespaces = [].concat(_toConsumableArray(createDebug.names), _toConsumableArray(createDebug.skips.map(function (namespace) {
         return '-' + namespace;
       }))).join(',');
       createDebug.enable('');
@@ -1088,35 +1180,37 @@
     * @api public
     */
     function enabled(name) {
-      if (name[name.length - 1] === '*') {
-        return true;
-      }
-      var i;
-      var len;
-      for (i = 0, len = createDebug.skips.length; i < len; i++) {
-        if (createDebug.skips[i].test(name)) {
-          return false;
+      var _iterator2 = _createForOfIteratorHelper(createDebug.skips),
+        _step2;
+      try {
+        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
+          var skip = _step2.value;
+          if (matchesTemplate(name, skip)) {
+            return false;
+          }
         }
+      } catch (err) {
+        _iterator2.e(err);
+      } finally {
+        _iterator2.f();
       }
-      for (i = 0, len = createDebug.names.length; i < len; i++) {
-        if (createDebug.names[i].test(name)) {
-          return true;
+      var _iterator3 = _createForOfIteratorHelper(createDebug.names),
+        _step3;
+      try {
+        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
+          var ns = _step3.value;
+          if (matchesTemplate(name, ns)) {
+            return true;
+          }
         }
+      } catch (err) {
+        _iterator3.e(err);
+      } finally {
+        _iterator3.f();
       }
       return false;
     }
 
-    /**
-    * Convert regexp to namespace
-    *
-    * @param {RegExp} regxep
-    * @return {String} namespace
-    * @api private
-    */
-    function toNamespace(regexp) {
-      return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
-    }
-
     /**
     * Coerce `val`.
     *
@@ -1192,15 +1286,17 @@
       if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
         return false;
       }
+      var m;
 
       // Is webkit? http://stackoverflow.com/a/16459606/376773
       // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
+      // eslint-disable-next-line no-return-assign
       return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
       // Is firebug? http://stackoverflow.com/a/398120/376773
       typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
       // Is firefox >= v31?
       // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
-      typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
+      typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) && parseInt(m[1], 10) >= 31 ||
       // Double check webkit in userAgent just in case we are in a worker
       typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
     }
@@ -1276,7 +1372,7 @@
     function load() {
       var r;
       try {
-        r = exports.storage.getItem('debug');
+        r = exports.storage.getItem('debug') || exports.storage.getItem('DEBUG');
       } catch (error) {
         // Swallow
         // XXX (@Qix-) should we be logging these?
@@ -1457,7 +1553,7 @@
       return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
     };
     _proto._port = function _port() {
-      if (this.opts.port && (this.opts.secure && Number(this.opts.port !== 443) || !this.opts.secure && Number(this.opts.port) !== 80)) {
+      if (this.opts.port && (this.opts.secure && Number(this.opts.port) !== 443 || !this.opts.secure && Number(this.opts.port) !== 80)) {
         return ":" + this.opts.port;
       } else {
         return "";

packages/engine.io-client/package.json

@@ -2,7 +2,7 @@
   "name": "engine.io-client",
   "description": "Client for the realtime Engine",
   "license": "MIT",
-  "version": "6.6.3",
+  "version": "6.6.4",
   "main": "./build/cjs/index.js",
   "module": "./build/esm/index.js",
   "exports": {

packages/engine.io-parser/test.js

@@ -1,12 +0,0 @@
-const parser = require('.');
-
-parser.encodePayload([
-  {
-    type: 'message',
-    data: '€',
-  },
-  {
-    type: 'message',
-    data: Buffer.from([1, 2, 3, 4]),
-  },
-], true, console.log);

packages/engine.io-parser/zuul.config.js

@@ -1,44 +0,0 @@
-"use strict";
-
-const browsers = require("socket.io-browsers");
-
-const zuulConfig = (module.exports = {
-  ui: "mocha-bdd",
-
-  // test on localhost by default
-  local: true,
-  open: true,
-
-  concurrency: 2, // ngrok only accepts two tunnels by default
-  // if browser does not sends output in 120s since last output:
-  // stop testing, something is wrong
-  browser_output_timeout: 120 * 1000,
-  browser_open_timeout: 60 * 4 * 1000,
-  // we want to be notified something is wrong asap, so no retry
-  browser_retries: 1,
-
-  browserify: [
-    {
-      plugin: ["tsify", {
-        target: "es5"
-      }],
-      transform: {
-        name: "babelify",
-        presets: ["@babel/preset-env"]
-      }
-    }
-  ]
-});
-
-if (process.env.CI === "true") {
-  zuulConfig.local = false;
-  zuulConfig.tunnel = {
-    type: "ngrok",
-    bind_tls: true
-  };
-}
-
-const isPullRequest =
-  process.env.TRAVIS_PULL_REQUEST &&
-  process.env.TRAVIS_PULL_REQUEST !== "false";
-zuulConfig.browsers = isPullRequest ? browsers.pullRequest : browsers.all;

packages/engine.io/CHANGELOG.md

@@ -50,7 +50,7 @@
 
 ## [6.6.5](https://github.com/socketio/socket.io/compare/engine.io@6.6.4...engine.io@6.6.5) (2025-12-22)
 
-The `url.parse()` function is now deprecated and has been replaced by `new URL()` (see [e08293b](https://github.com/socketio/socket.io/commit/e08293bc3735de5b824b347383e86e0b8ab9fbd5b).
+The `url.parse()` function is now deprecated and has been replaced by `new URL()` (see [e08293b](https://github.com/socketio/socket.io/commit/e08293bc3735de5b824b347383e86e0b8ab9fbd5)).
 
 
 ### Dependencies

packages/socket.io-adapter/CHANGELOG.md

@@ -1,26 +1,35 @@
-# History
+# Changelog
 
-- [2.5.5](#255-2024-06-18) (Jun 2024)
-- [2.5.4](#254-2024-02-22) (Feb 2024)
-- [2.5.3](#253-2024-02-21) (Feb 2024)
-- [2.5.2](#252-2023-01-12) (Jan 2023)
-- [2.5.1](#251-2023-01-06) (Jan 2023)
-- [2.5.0](#250-2023-01-06) (Jan 2023)
-- [2.4.0](#240-2022-03-30) (Mar 2022)
-- [2.3.3](#233-2021-11-16) (Nov 2021)
-- [2.3.2](#232-2021-08-28) (Aug 2021)
-- [2.3.1](#231-2021-05-19) (May 2021)
-- [2.3.0](#230-2021-05-10) (May 2021)
-- [2.2.0](#220-2021-02-27) (Feb 2021)
-- [2.1.0](#210-2021-01-15) (Jan 2021)
-- [2.0.3](#203-2020-11-05) (Nov 2020)
-- [2.0.2](#202-2020-09-28) (Sep 2020)
-- [2.0.1](#201-2020-09-28) (Sep 2020)
-- [**2.0.0**](#200-2020-09-25) (Sep 2020)
+| Version                      | Release date   |
+|------------------------------|----------------|
+| [2.5.6](#256-2025-12-23)     | December 2025  |
+| [2.5.5](#255-2024-06-18)     | June 2024      |
+| [2.5.4](#254-2024-02-22)     | February 2024  |
+| [2.5.3](#253-2024-02-21)     | February 2024  |
+| [2.5.2](#252-2023-01-12)     | January 2023   |
+| [2.5.1](#251-2023-01-06)     | January 2023   |
+| [2.5.0](#250-2023-01-06)     | January 2023   |
+| [2.4.0](#240-2022-03-30)     | March 2022     |
+| [2.3.3](#233-2021-11-16)     | November 2021  |
+| [2.3.2](#232-2021-08-28)     | August 2021    |
+| [2.3.1](#231-2021-05-19)     | May 2021       |
+| [2.3.0](#230-2021-05-10)     | May 2021       |
+| [2.2.0](#220-2021-02-27)     | February 2021  |
+| [2.1.0](#210-2021-01-15)     | January 2021   |
+| [2.0.3](#203-2020-11-05)     | November 2020  |
+| [2.0.2](#202-2020-09-28)     | September 2020 |
+| [2.0.1](#201-2020-09-28)     | September 2020 |
+| [**2.0.0**](#200-2020-09-25) | September 2020 |
 
 
+## [2.5.6](https://github.com/socketio/socket.io/compare/socket.io-adapter@2.5.5...socket.io-adapter@2.5.6) (2025-12-23)
+
+This release contains a bump of:
+
+- `ws` from `~8.17.1` to `~8.18.3`
+- `debug` from `~4.3.1` to `~4.4.1`
+
 
-# Release notes
 
 ## [2.5.5](https://github.com/socketio/socket.io-adapter/compare/2.5.4...2.5.5) (2024-06-18)
 

packages/socket.io-adapter/package.json

@@ -1,6 +1,6 @@
 {
   "name": "socket.io-adapter",
-  "version": "2.5.5",
+  "version": "2.5.6",
   "license": "MIT",
   "homepage": "https://github.com/socketio/socket.io/tree/main/packages/socket.io-adapter#readme",
   "repository": {

packages/socket.io-client/CHANGELOG.md

@@ -1,7 +1,9 @@
-# History
+# Changelog
 
 | Version                                                                                                     | Release date   | Bundle size (UMD min+gzip) |
 |-------------------------------------------------------------------------------------------------------------|----------------|----------------------------|
+| [4.8.3](#483-2025-12-23)                                                                                    | December 2025  | `14.4 KB`                  |
+| [4.8.2](#482-2025-12-22)                                                                                    | December 2025  | `14.4 KB`                  |
 | [4.8.1](#481-2024-10-25)                                                                                    | October 2024   | `14.4 KB`                  |
 | [4.8.0](#480-2024-09-21)                                                                                    | September 2024 | `14.4 KB`                  |
 | [4.7.5](#475-2024-03-14)                                                                                    | March 2024     | `14.6 KB`                  |
@@ -50,7 +52,33 @@
 | [2.1.0](#210-2018-03-29)                                                                                    | March 2018     | `18.7 KB`                  |
 
 
-# Release notes
+## [4.8.3](https://github.com/socketio/socket.io/compare/socket.io-client@4.8.2...socket.io-client@4.8.3) (2025-12-23)
+
+There were some minor bug fixes on the server side, which mandate a client bump.
+
+
+### Dependencies
+
+- [`engine.io-client@~6.6.1`](https://github.com/socketio/engine.io-client/releases/tag/6.5.2) (no change)
+- [`ws@~8.18.3`](https://github.com/websockets/ws/releases/tag/8.18.3) ([diff](https://github.com/websockets/ws/compare/8.17.1...8.18.3))
+
+
+
+## [4.8.2](https://github.com/socketio/socket.io/compare/socket.io-client@4.8.1...socket.io-client@4.8.2) (2025-12-22)
+
+
+### Bug Fixes
+
+* **bundle** do not mangle the "_placeholder" attribute (bis) ([cdae019](https://github.com/socketio/socket.io/commit/cdae01983a8ae840fc9812875a8b88166b377c11))
+* drain queue before emitting "connect" ([#5259](https://github.com/socketio/socket.io/issues/5259)) ([d19928e](https://github.com/socketio/socket.io/commit/d19928e8d8b325310274031ed7de2ddc93ebb589)
+
+
+### Dependencies
+
+- [`engine.io-client@~6.6.1`](https://github.com/socketio/engine.io-client/releases/tag/6.5.2) (no change)
+- [`ws@~8.17.1`](https://github.com/websockets/ws/releases/tag/8.17.1) (no change)
+
+
 
 ## [4.8.1](https://github.com/socketio/socket.io/compare/socket.io-client@4.8.0...socket.io-client@4.8.1) (2024-10-25)
 

packages/socket.io-client/dist/socket.io.js

@@ -1,6 +1,6 @@
 /*!
- * Socket.IO v4.8.1
- * (c) 2014-2024 Guillermo Rauch
+ * Socket.IO v4.8.3
+ * (c) 2014-2025 Guillermo Rauch
  * Released under the MIT License.
  */
 (function (global, factory) {
@@ -899,7 +899,7 @@
       return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
     };
     _proto._port = function _port() {
-      if (this.opts.port && (this.opts.secure && Number(this.opts.port !== 443) || !this.opts.secure && Number(this.opts.port) !== 80)) {
+      if (this.opts.port && (this.opts.secure && Number(this.opts.port) !== 443 || !this.opts.secure && Number(this.opts.port) !== 80)) {
         return ":" + this.opts.port;
       } else {
         return "";
@@ -2669,21 +2669,65 @@
       createDebug.namespaces = namespaces;
       createDebug.names = [];
       createDebug.skips = [];
-      var i;
-      var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
-      var len = split.length;
-      for (i = 0; i < len; i++) {
-        if (!split[i]) {
-          // ignore empty strings
-          continue;
+      var split = (typeof namespaces === 'string' ? namespaces : '').trim().replace(/\s+/g, ',').split(',').filter(Boolean);
+      var _iterator = _createForOfIteratorHelper(split),
+        _step;
+      try {
+        for (_iterator.s(); !(_step = _iterator.n()).done;) {
+          var ns = _step.value;
+          if (ns[0] === '-') {
+            createDebug.skips.push(ns.slice(1));
+          } else {
+            createDebug.names.push(ns);
+          }
         }
-        namespaces = split[i].replace(/\*/g, '.*?');
-        if (namespaces[0] === '-') {
-          createDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));
+      } catch (err) {
+        _iterator.e(err);
+      } finally {
+        _iterator.f();
+      }
+    }
+
+    /**
+     * Checks if the given string matches a namespace template, honoring
+     * asterisks as wildcards.
+     *
+     * @param {String} search
+     * @param {String} template
+     * @return {Boolean}
+     */
+    function matchesTemplate(search, template) {
+      var searchIndex = 0;
+      var templateIndex = 0;
+      var starIndex = -1;
+      var matchIndex = 0;
+      while (searchIndex < search.length) {
+        if (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {
+          // Match character or proceed with wildcard
+          if (template[templateIndex] === '*') {
+            starIndex = templateIndex;
+            matchIndex = searchIndex;
+            templateIndex++; // Skip the '*'
+          } else {
+            searchIndex++;
+            templateIndex++;
+          }
+        } else if (starIndex !== -1) {
+          // eslint-disable-line no-negated-condition
+          // Backtrack to the last '*' and try to match more characters
+          templateIndex = starIndex + 1;
+          matchIndex++;
+          searchIndex = matchIndex;
         } else {
-          createDebug.names.push(new RegExp('^' + namespaces + '$'));
+          return false; // No match
         }
       }
+
+      // Handle trailing '*' in template
+      while (templateIndex < template.length && template[templateIndex] === '*') {
+        templateIndex++;
+      }
+      return templateIndex === template.length;
     }
 
     /**
@@ -2693,7 +2737,7 @@
     * @api public
     */
     function disable() {
-      var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
+      var namespaces = [].concat(_toConsumableArray(createDebug.names), _toConsumableArray(createDebug.skips.map(function (namespace) {
         return '-' + namespace;
       }))).join(',');
       createDebug.enable('');
@@ -2708,35 +2752,37 @@
     * @api public
     */
     function enabled(name) {
-      if (name[name.length - 1] === '*') {
-        return true;
-      }
-      var i;
-      var len;
-      for (i = 0, len = createDebug.skips.length; i < len; i++) {
-        if (createDebug.skips[i].test(name)) {
-          return false;
+      var _iterator2 = _createForOfIteratorHelper(createDebug.skips),
+        _step2;
+      try {
+        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
+          var skip = _step2.value;
+          if (matchesTemplate(name, skip)) {
+            return false;
+          }
         }
+      } catch (err) {
+        _iterator2.e(err);
+      } finally {
+        _iterator2.f();
       }
-      for (i = 0, len = createDebug.names.length; i < len; i++) {
-        if (createDebug.names[i].test(name)) {
-          return true;
+      var _iterator3 = _createForOfIteratorHelper(createDebug.names),
+        _step3;
+      try {
+        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
+          var ns = _step3.value;
+          if (matchesTemplate(name, ns)) {
+            return true;
+          }
         }
+      } catch (err) {
+        _iterator3.e(err);
+      } finally {
+        _iterator3.f();
       }
       return false;
     }
 
-    /**
-    * Convert regexp to namespace
-    *
-    * @param {RegExp} regxep
-    * @return {String} namespace
-    * @api private
-    */
-    function toNamespace(regexp) {
-      return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
-    }
-
     /**
     * Coerce `val`.
     *
@@ -2812,15 +2858,17 @@
       if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
         return false;
       }
+      var m;
 
       // Is webkit? http://stackoverflow.com/a/16459606/376773
       // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
+      // eslint-disable-next-line no-return-assign
       return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
       // Is firebug? http://stackoverflow.com/a/398120/376773
       typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
       // Is firefox >= v31?
       // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
-      typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
+      typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) && parseInt(m[1], 10) >= 31 ||
       // Double check webkit in userAgent just in case we are in a worker
       typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
     }
@@ -2896,7 +2944,7 @@
     function load() {
       var r;
       try {
-        r = exports.storage.getItem('debug');
+        r = exports.storage.getItem('debug') || exports.storage.getItem('DEBUG');
       } catch (error) {
         // Swallow
         // XXX (@Qix-) should we be logging these?
@@ -3828,8 +3876,7 @@
       };
       args.push(function (err) {
         if (packet !== _this4._queue[0]) {
-          // the packet has already been acknowledged
-          return;
+          return debug$2("packet [%d] already acknowledged", packet.id);
         }
         var hasError = err !== null;
         if (hasError) {
@@ -4100,8 +4147,8 @@
       this._pid = pid; // defined only if connection state recovery is enabled
       this.connected = true;
       this.emitBuffered();
-      this.emitReserved("connect");
       this._drainQueue(true);
+      this.emitReserved("connect");
     }
     /**
      * Emit buffered events (received and emitted).

packages/socket.io-client/package.json

@@ -1,6 +1,6 @@
 {
   "name": "socket.io-client",
-  "version": "4.8.1",
+  "version": "4.8.3",
   "description": "Realtime application framework client",
   "keywords": [
     "realtime",

packages/socket.io-client/support/package.esm.json

@@ -1,5 +1,5 @@
 {
   "name": "socket.io-client",
-  "version": "4.7.5",
+  "version": "4.8.3",
   "type": "module"
 }

packages/socket.io-parser/CHANGELOG.md

@@ -1,7 +1,8 @@
-# History
+# Changelog
 
 | Version                                                                                                     | Release date   |
 |-------------------------------------------------------------------------------------------------------------|----------------|
+| [4.2.5](#425-2025-12-23)                                                                                    | December 2025  |
 | [3.3.4](#334-2024-07-22) (from the [3.3.x](https://github.com/socketio/socket.io-parser/tree/3.3.x) branch) | July 2024      |
 | [4.2.4](#424-2023-05-31)                                                                                    | May 2023       |
 | [3.4.3](#343-2023-05-22) (from the [3.4.x](https://github.com/socketio/socket.io-parser/tree/3.4.x) branch) | May 2023       |
@@ -33,7 +34,11 @@
 | [3.3.0](#330-2018-11-07)                                                                                    | November 2018  |
 
 
-# Release notes
+## [4.2.5](https://github.com/socketio/socket.io/compare/socket.io-parser@4.2.4...socket.io-parser@4.2.5) (2025-12-23)
+
+This release contains a bump of `debug` from `~4.3.1` to `~4.4.1`.
+
+
 
 ## [3.3.4](https://github.com/Automattic/socket.io-parser/compare/3.3.3...3.3.4) (2024-07-22)
 

packages/socket.io-parser/package.json

@@ -1,6 +1,6 @@
 {
   "name": "socket.io-parser",
-  "version": "4.2.4",
+  "version": "4.2.5",
   "description": "socket.io protocol parser",
   "homepage": "https://github.com/socketio/socket.io/tree/main/packages/socket.io-client#readme",
   "repository": {

packages/socket.io/CHANGELOG.md

@@ -1,7 +1,8 @@
-# History
+# Changelog
 
 | Version                                                                                          | Release date   |
 |--------------------------------------------------------------------------------------------------|----------------|
+| [4.8.2](#482-2025-12-22)                                                                         | December 2025  |
 | [4.8.1](#481-2024-10-25)                                                                         | October 2024   |
 | [4.8.0](#480-2024-09-21)                                                                         | September 2024 |
 | [4.7.5](#475-2024-03-14)                                                                         | March 2024     |
@@ -49,7 +50,22 @@
 | [2.1.0](#210-2018-03-29)                                                                         | March 2018     |
 
 
-# Release notes
+## [4.8.2](https://github.com/socketio/socket.io/compare/socket.io@4.8.1...socket.io@4.8.2) (2025-12-22)
+
+The `url.parse()` function is now deprecated and has been replaced by `new URL()` (see [8af7019](https://github.com/socketio/socket.io/commit/8af70195bb8c5bc3efe9685997ab6373fb8b1ca9)).
+
+### Bug Fixes
+
+* call adapter.init() when creating each namespace ([f3e1f5e](https://github.com/socketio/socket.io/commit/f3e1f5ebdf59158d0c8d1e20f8230275617fb355))
+* improve `io.close()` function ([#5344](https://github.com/socketio/socket.io/issues/5344)) ([bb0b480](https://github.com/socketio/socket.io/commit/bb0b480d2ab3108a8ae255b539015da451fdb249))
+
+
+### Dependencies
+
+- [`engine.io@~6.6.0`](https://github.com/socketio/engine.io/releases/tag/6.6.0) (no change)
+- [`ws@~8.18.3`](https://github.com/websockets/ws/releases/tag/8.18.3) ([diff](https://github.com/websockets/ws/compare/8.17.1...8.18.3))
+
+
 
 ## [4.8.1](https://github.com/socketio/socket.io/compare/socket.io@4.8.0...socket.io@4.8.1) (2024-10-25)
 

packages/socket.io/client-dist/socket.io.js

@@ -1,6 +1,6 @@
 /*!
- * Socket.IO v4.8.1
- * (c) 2014-2024 Guillermo Rauch
+ * Socket.IO v4.8.2
+ * (c) 2014-2025 Guillermo Rauch
  * Released under the MIT License.
  */
 (function (global, factory) {
@@ -899,7 +899,7 @@
       return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
     };
     _proto._port = function _port() {
-      if (this.opts.port && (this.opts.secure && Number(this.opts.port !== 443) || !this.opts.secure && Number(this.opts.port) !== 80)) {
+      if (this.opts.port && (this.opts.secure && Number(this.opts.port) !== 443 || !this.opts.secure && Number(this.opts.port) !== 80)) {
         return ":" + this.opts.port;
       } else {
         return "";
@@ -2669,21 +2669,65 @@
       createDebug.namespaces = namespaces;
       createDebug.names = [];
       createDebug.skips = [];
-      var i;
-      var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
-      var len = split.length;
-      for (i = 0; i < len; i++) {
-        if (!split[i]) {
-          // ignore empty strings
-          continue;
+      var split = (typeof namespaces === 'string' ? namespaces : '').trim().replace(/\s+/g, ',').split(',').filter(Boolean);
+      var _iterator = _createForOfIteratorHelper(split),
+        _step;
+      try {
+        for (_iterator.s(); !(_step = _iterator.n()).done;) {
+          var ns = _step.value;
+          if (ns[0] === '-') {
+            createDebug.skips.push(ns.slice(1));
+          } else {
+            createDebug.names.push(ns);
+          }
         }
-        namespaces = split[i].replace(/\*/g, '.*?');
-        if (namespaces[0] === '-') {
-          createDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));
+      } catch (err) {
+        _iterator.e(err);
+      } finally {
+        _iterator.f();
+      }
+    }
+
+    /**
+     * Checks if the given string matches a namespace template, honoring
+     * asterisks as wildcards.
+     *
+     * @param {String} search
+     * @param {String} template
+     * @return {Boolean}
+     */
+    function matchesTemplate(search, template) {
+      var searchIndex = 0;
+      var templateIndex = 0;
+      var starIndex = -1;
+      var matchIndex = 0;
+      while (searchIndex < search.length) {
+        if (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {
+          // Match character or proceed with wildcard
+          if (template[templateIndex] === '*') {
+            starIndex = templateIndex;
+            matchIndex = searchIndex;
+            templateIndex++; // Skip the '*'
+          } else {
+            searchIndex++;
+            templateIndex++;
+          }
+        } else if (starIndex !== -1) {
+          // eslint-disable-line no-negated-condition
+          // Backtrack to the last '*' and try to match more characters
+          templateIndex = starIndex + 1;
+          matchIndex++;
+          searchIndex = matchIndex;
         } else {
-          createDebug.names.push(new RegExp('^' + namespaces + '$'));
+          return false; // No match
         }
       }
+
+      // Handle trailing '*' in template
+      while (templateIndex < template.length && template[templateIndex] === '*') {
+        templateIndex++;
+      }
+      return templateIndex === template.length;
     }
 
     /**
@@ -2693,7 +2737,7 @@
     * @api public
     */
     function disable() {
-      var namespaces = [].concat(_toConsumableArray(createDebug.names.map(toNamespace)), _toConsumableArray(createDebug.skips.map(toNamespace).map(function (namespace) {
+      var namespaces = [].concat(_toConsumableArray(createDebug.names), _toConsumableArray(createDebug.skips.map(function (namespace) {
         return '-' + namespace;
       }))).join(',');
       createDebug.enable('');
@@ -2708,35 +2752,37 @@
     * @api public
     */
     function enabled(name) {
-      if (name[name.length - 1] === '*') {
-        return true;
-      }
-      var i;
-      var len;
-      for (i = 0, len = createDebug.skips.length; i < len; i++) {
-        if (createDebug.skips[i].test(name)) {
-          return false;
+      var _iterator2 = _createForOfIteratorHelper(createDebug.skips),
+        _step2;
+      try {
+        for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
+          var skip = _step2.value;
+          if (matchesTemplate(name, skip)) {
+            return false;
+          }
         }
+      } catch (err) {
+        _iterator2.e(err);
+      } finally {
+        _iterator2.f();
       }
-      for (i = 0, len = createDebug.names.length; i < len; i++) {
-        if (createDebug.names[i].test(name)) {
-          return true;
+      var _iterator3 = _createForOfIteratorHelper(createDebug.names),
+        _step3;
+      try {
+        for (_iterator3.s(); !(_step3 = _iterator3.n()).done;) {
+          var ns = _step3.value;
+          if (matchesTemplate(name, ns)) {
+            return true;
+          }
         }
+      } catch (err) {
+        _iterator3.e(err);
+      } finally {
+        _iterator3.f();
       }
       return false;
     }
 
-    /**
-    * Convert regexp to namespace
-    *
-    * @param {RegExp} regxep
-    * @return {String} namespace
-    * @api private
-    */
-    function toNamespace(regexp) {
-      return regexp.toString().substring(2, regexp.toString().length - 2).replace(/\.\*\?$/, '*');
-    }
-
     /**
     * Coerce `val`.
     *
@@ -2812,15 +2858,17 @@
       if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
         return false;
       }
+      var m;
 
       // Is webkit? http://stackoverflow.com/a/16459606/376773
       // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
+      // eslint-disable-next-line no-return-assign
       return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance ||
       // Is firebug? http://stackoverflow.com/a/398120/376773
       typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) ||
       // Is firefox >= v31?
       // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
-      typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 ||
+      typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) && parseInt(m[1], 10) >= 31 ||
       // Double check webkit in userAgent just in case we are in a worker
       typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
     }
@@ -2896,7 +2944,7 @@
     function load() {
       var r;
       try {
-        r = exports.storage.getItem('debug');
+        r = exports.storage.getItem('debug') || exports.storage.getItem('DEBUG');
       } catch (error) {
         // Swallow
         // XXX (@Qix-) should we be logging these?
@@ -3828,8 +3876,7 @@
       };
       args.push(function (err) {
         if (packet !== _this4._queue[0]) {
-          // the packet has already been acknowledged
-          return;
+          return debug$2("packet [%d] already acknowledged", packet.id);
         }
         var hasError = err !== null;
         if (hasError) {
@@ -4100,8 +4147,8 @@
       this._pid = pid; // defined only if connection state recovery is enabled
       this.connected = true;
       this.emitBuffered();
-      this.emitReserved("connect");
       this._drainQueue(true);
+      this.emitReserved("connect");
     }
     /**
      * Emit buffered events (received and emitted).

packages/socket.io/lib/index.ts

@@ -831,7 +831,15 @@ export class Server<
     restoreAdapter();
 
     if (this.httpServer) {
-      this.httpServer.close(fn);
+      return new Promise<void>((resolve) => {
+        this.httpServer.close((err) => {
+          fn && fn(err);
+          if (err) {
+            debug("server was not running");
+          }
+          resolve();
+        });
+      });
     } else {
       fn && fn();
     }

packages/socket.io/package.json

@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "4.8.1",
+  "version": "4.8.2",
   "description": "node.js realtime framework server",
   "keywords": [
     "realtime",

packages/socket.io/test/close.ts

@@ -70,6 +70,27 @@ describe("close", () => {
     });
   });
 
+  it("should not throw when the underlying HTTP server is not running (callback)", (done) => {
+    const httpServer = createServer();
+    const io = new Server(httpServer);
+
+    io.close((err) => {
+      expect((err as Error & { code: string }).code).to.eql(
+        "ERR_SERVER_NOT_RUNNING",
+      );
+      done();
+    });
+  });
+
+  it("should not throw when the underlying HTTP server is not running (Promise)", (done) => {
+    const httpServer = createServer();
+    const io = new Server(httpServer);
+
+    io.close()
+      .then(() => done())
+      .catch((e) => done(e));
+  });
+
   describe("graceful close", () => {
     function fixture(filename) {
       return (

packages/socket.io/test/server-attachment.ts

@@ -6,7 +6,7 @@ import { getPort, successFn } from "./support/util";
 
 describe("server attachment", () => {
   describe("http.Server", () => {
-    const clientVersion = require("socket.io-client/package.json").version;
+    const clientVersion = require("../package.json").version;
 
     const testSource = (filename) => (done) => {
       const srv = createServer();

packages/socket.io/test/uws.ts

@@ -229,7 +229,7 @@ describe("socket.io with uWebSocket.js-based engine", () => {
   });
 
   it("should serve static files", (done) => {
-    const clientVersion = require("socket.io-client/package.json").version;
+    const clientVersion = require("../package.json").version;
 
     request(`http://localhost:${port}`)
       .get("/socket.io/socket.io.js")