Added SSL/TLS testing reference example. Useful in testing your version of Node!

Author: dx9s

.gitignore

@@ -1,2 +1,3 @@
 
 node_modules/
+*.pem

README.md

@@ -2,10 +2,15 @@
 # Socket.IO Fiddle
 
 ```
+$ sh generate.sh # create self-signed keys for server-ssl.js
 $ npm install
 $ npm start # run the server
 $ npm run client # run the nodejs client
 ```
 
-And point your browser to `http://localhost:3000`. Optionally, specify
+And point your browser to `https://localhost:3000`. Optionally, specify
 a port by supplying the `PORT` env variable.
+
+You will have to accept the self-signed warning. Older versions of node are known to have issues. This is a way to test your version of node.
+
+**Known versions to work with SSL/TLS: v8.1.3 -- expect newest versions of v6 and v4 to also work (untested)!**

client.js

@@ -1,5 +1,17 @@
 
-const socket = require('socket.io-client')('http://localhost:3000');
+// for the following to work, you'll have to answer "localhost" at the Common Name question when running generate.sh
+// > Common Name (e.g. server FQDN or YOUR name) []:localhost
+const fs = require('fs');
+const socket = require('socket.io-client')('https://localhost:3000', {
+  rejectUnauthorized: true, // default value
+  ca: fs.readFileSync('./cert.pem')
+});
+
+// USE WITH CAUTION! The following disables the validation of the server's identity
+// see https://nodejs.org/docs/latest/api/tls.html#tls_tls_createserver_options_secureconnectionlistener
+// const socket = require('socket.io-client')('https://localhost:3000', {
+//   rejectUnauthorized: false
+// });
 
 socket.on('connect', onConnect);
 

generate.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+echo "You can optionally answer the question, or 'enter' for defaults:"
+openssl req -newkey rsa:2048 -nodes -keyout key.pem -x509 -days 3650 -out cert.pem

server.js

@@ -1,7 +1,11 @@
 
 const express = require('express');
 const app = express();
-const server = require('http').createServer(app);
+const fs = require('fs');
+const server = require('https').createServer({
+  key: fs.readFileSync('./key.pem'),
+  cert: fs.readFileSync('./cert.pem'),
+}, app);
 const io = require('socket.io')(server);
 const port = process.env.PORT || 3000;