[chore] Release 2.2.0

Accessing the clients of a dynamic namespace throws because doing `io.of(/your-regex/g)` returns a namespace with no adapter and the clients methods tries to access `namespace.adapter.clients`.

.github/ISSUE_TEMPLATE.md

@@ -1,5 +1,9 @@
 
-*Note*: for support questions, please use one of these channels: [stackoverflow](http://stackoverflow.com/questions/tagged/socket.io) or [slack](https://socketio.slack.com)
+**Note**: for support questions, please use one of these channels: [stackoverflow](http://stackoverflow.com/questions/tagged/socket.io) or [slack](https://socketio.slack.com)
+
+For bug reports and feature requests for the **Swift client**, please open an issue [there](https://github.com/socketio/socket.io-client-swift).
+
+For bug reports and feature requests for the **Java client**, please open an issue [there](https://github.com/socketio/socket.io-client-java).
 
 ### You want to:
 
@@ -8,13 +12,15 @@
 
 ### Current behaviour
 
+*What is actually happening?*
 
 ### Steps to reproduce (if the current behaviour is a bug)
 
-**Note**: the best way to get a quick answer is to provide a failing test case, by forking the following [fiddle](https://github.com/darrachequesne/socket.io-fiddle) for example.
+**Note**: the best way (and by that we mean **the only way**) to get a quick answer is to provide a failing test case by forking the following [fiddle](https://github.com/socketio/socket.io-fiddle).
 
 ### Expected behaviour
 
+*What is expected?*
 
 ### Setup
 - OS:

.travis.yml

@@ -1,10 +1,8 @@
 language: node_js
 sudo: false
 node_js:
-  - '4'
-  - '6'
   - '8'
-  - node
+  - '10'
 notifications:
   irc: "irc.freenode.org#socket.io"
 git:

Readme.md

@@ -11,7 +11,7 @@
 
 ## Features
 
-Socket.IO enables real-time bidirectional event-based communication. It consists in:
+Socket.IO enables real-time bidirectional event-based communication. It consists of:
 
 - a Node.js server (this repository)
 - a [Javascript client library](https://github.com/socketio/socket.io-client) for the browser (or a Node.js client)
@@ -55,10 +55,10 @@ Any serializable data structures can be emitted, including:
 Sample code:
 
 ```js
-io.on('connection', function(socket){
-  socket.emit('request', /* */); // emit an event to the socket
-  io.emit('broadcast', /* */); // emit an event to all connected sockets
-  socket.on('reply', function(){ /* */ }); // listen to the event
+io.on('connection', socket => {
+  socket.emit('request', /* … */); // emit an event to the socket
+  io.emit('broadcast', /* … */); // emit an event to all connected sockets
+  socket.on('reply', () => { /* … */ }); // listen to the event
 });
 ```
 
@@ -84,7 +84,7 @@ This is a useful feature to send notifications to a group of users, or to a give
 ## Installation
 
 ```bash
-npm install socket.io --save
+npm install socket.io
 ```
 
 ## How to use
@@ -93,11 +93,11 @@ The following example attaches socket.io to a plain Node.JS
 HTTP server listening on port `3000`.
 
 ```js
-var server = require('http').createServer();
-var io = require('socket.io')(server);
-io.on('connection', function(client){
-  client.on('event', function(data){});
-  client.on('disconnect', function(){});
+const server = require('http').createServer();
+const io = require('socket.io')(server);
+io.on('connection', client => {
+  client.on('event', data => { /* … */ });
+  client.on('disconnect', () => { /* … */ });
 });
 server.listen(3000);
 ```
@@ -105,8 +105,8 @@ server.listen(3000);
 ### Standalone
 
 ```js
-var io = require('socket.io')();
-io.on('connection', function(client){});
+const io = require('socket.io')();
+io.on('connection', client => { ... });
 io.listen(3000);
 ```
 
@@ -118,10 +118,10 @@ to pass the `Server` to `socket.io`, and not the express application
 function. Also make sure to call `.listen` on the `server`, not the `app`.
 
 ```js
-var app = require('express')();
-var server = require('http').createServer(app);
-var io = require('socket.io')(server);
-io.on('connection', function(){ /* … */ });
+const app = require('express')();
+const server = require('http').createServer(app);
+const io = require('socket.io')(server);
+io.on('connection', () => { /* … */ });
 server.listen(3000);
 ```
 
@@ -131,10 +131,10 @@ Like Express.JS, Koa works by exposing an application as a request
 handler function, but only by calling the `callback` method.
 
 ```js
-var app = require('koa')();
-var server = require('http').createServer(app.callback());
-var io = require('socket.io')(server);
-io.on('connection', function(){ /* … */ });
+const app = require('koa')();
+const server = require('http').createServer(app.callback());
+const io = require('socket.io')(server);
+io.on('connection', () => { /* … */ });
 server.listen(3000);
 ```
 

examples/chat/public/main.js

@@ -108,7 +108,7 @@ $(function() {
 
   // Removes the visual chat typing message
   const removeChatTyping = (data) => {
-    getTypingMessages(data).fadeOut(() => {
+    getTypingMessages(data).fadeOut(function () {
       $(this).remove();
     });
   }
@@ -171,7 +171,7 @@ $(function() {
 
   // Gets the 'X is typing' messages of a user
   const getTypingMessages = (data) => {
-    return $('.typing.message').filter(i => {
+    return $('.typing.message').filter(function (i) {
       return $(this).data('username') === data.username;
     });
   }

examples/whiteboard/public/main.js

@@ -16,6 +16,12 @@
   canvas.addEventListener('mouseup', onMouseUp, false);
   canvas.addEventListener('mouseout', onMouseUp, false);
   canvas.addEventListener('mousemove', throttle(onMouseMove, 10), false);
+  
+  //Touch support for mobile devices
+  canvas.addEventListener('touchstart', onMouseDown, false);
+  canvas.addEventListener('touchend', onMouseUp, false);
+  canvas.addEventListener('touchcancel', onMouseUp, false);
+  canvas.addEventListener('touchmove', throttle(onMouseMove, 10), false);
 
   for (var i = 0; i < colors.length; i++){
     colors[i].addEventListener('click', onColorUpdate, false);
@@ -51,21 +57,21 @@
 
   function onMouseDown(e){
     drawing = true;
-    current.x = e.clientX;
-    current.y = e.clientY;
+    current.x = e.clientX||e.touches[0].clientX;
+    current.y = e.clientY||e.touches[0].clientY;
   }
 
   function onMouseUp(e){
     if (!drawing) { return; }
     drawing = false;
-    drawLine(current.x, current.y, e.clientX, e.clientY, current.color, true);
+    drawLine(current.x, current.y, e.clientX||e.touches[0].clientX, e.clientY||e.touches[0].clientY, current.color, true);
   }
 
   function onMouseMove(e){
     if (!drawing) { return; }
-    drawLine(current.x, current.y, e.clientX, e.clientY, current.color, true);
-    current.x = e.clientX;
-    current.y = e.clientY;
+    drawLine(current.x, current.y, e.clientX||e.touches[0].clientX, e.clientY||e.touches[0].clientY, current.color, true);
+    current.x = e.clientX||e.touches[0].clientX;
+    current.y = e.clientY||e.touches[0].clientY;
   }
 
   function onColorUpdate(e){

lib/index.js

@@ -370,6 +370,7 @@ Server.prototype.serve = function(req, res){
   }
 
   debug('serve client source');
+  res.setHeader("Cache-Control", "public, max-age=0");
   res.setHeader('Content-Type', 'application/javascript');
   res.setHeader('ETag', expectedEtag);
   res.writeHead(200);

lib/namespace.js

@@ -262,6 +262,9 @@ Namespace.prototype.write = function(){
  */
 
 Namespace.prototype.clients = function(fn){
+  if(!this.adapter){
+    throw new Error('No adapter for this namespace, are you trying to get the list of clients of a dynamic namespace?')
+  }
   this.adapter.clients(this.rooms, fn);
   // reset rooms for scenario:
   // .in('room').clients() (GH-1978)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "socket.io",
-  "version": "2.1.1",
+  "version": "2.2.0",
   "description": "node.js realtime framework server",
   "keywords": [
     "realtime",
@@ -24,12 +24,12 @@
     "test": "nyc mocha --reporter spec --slow 200 --bail --timeout 10000 test/socket.io.js"
   },
   "dependencies": {
-    "debug": "~3.1.0",
-    "engine.io": "~3.2.0",
+    "debug": "~4.1.0",
+    "engine.io": "~3.3.1",
     "has-binary2": "~1.0.2",
     "socket.io-adapter": "~1.1.0",
-    "socket.io-client": "2.1.1",
-    "socket.io-parser": "~3.2.0"
+    "socket.io-client": "2.2.0",
+    "socket.io-parser": "~3.3.0"
   },
   "devDependencies": {
     "expect.js": "0.3.1",