导出Socket.io模块以在全球范围内可用。(Export Socket.io module to be available globally.)

 好吧我有一些要求，我希望能够在我的服务器的任何地方使用Socket.IO，特别是在执行任何CRUD操作时发送事件的路径中。 
 
 以下是一个名为sockets.js的文件，我用它来初始化我的套接字。 
 
(function IIFE() {
  2   'use strict';
  3
  4   var socketIO = require('socket.io');
  5
  6   exports.initialize = function (server) {
  7     var io = socketIO.listen(server)
  8
  9     io.sockets.on('connection', (socket) => {
 10       console.log(socket)
 11       console.log("Connected");
 12
 13       io.sockets.on('disconnect', (socket) => {
 14         console.log('Disconnect')
 15       });
 16     });
 17   }
 18
 19 })();
 
 以下是我的app.js，它本质上是我的服务器。 
 
    2 (function IIFE() {
    3   'use strict';
    4
    5   const chalk = require('chalk');
    6
    7   if(!process.env.NODE_ENV) {
    8     console.log(chalk.red('No environment specified...') + chalk.blue('defaulting to \'development\''));
    9     process.env.NODE_ENV = 'development';
   10   }
   11
   12   const express = require('express');
   13   const mongoose = require('mongoose');
   14
   15   const config = require('./config/environment');
   16
   17   mongoose.connect(config.mongo.uri, config.mongo.options);
   18
   19   mongoose.connection.on('error', function(err) {
   20     console.error('Mongo Error: ' + err);
   21   });
   22
   23   const app = express();
   24   const server = require('http').createServer(app);
   25
+  26   var io = require('./sockets.js');
+  27   io.initialize(server);
+  28
   29   require('./config/express')(app);
   30   require('./routes')(app);
   31
   32   server.listen(config.port, config.ip, function() {
   33     console.log('order-api listening on %d in %s mode', config.port, app.get('env'));
   34   });
   35
   36   exports = module.exports = app;
   37 })();
 
 以下文件位于另一个名为api的文件夹中。 整个应用程序是一个功能正常的应用程序我试图将套接字集成到。 但是我似乎无法理解如何从我的sockets.js集成套接字并在以下路由处理程序中使用它们。 
 
(function IIFE() {
  2   'use strict';
  3
  4   const router = require('express').Router();
  5
  6   router.use('/carts', require('./cart'));
  7   router.use('/orders', require('./order'));
  8   router.use('/reports', require('./report'));
  9   router.use('/validators', require('./validator'));
 10
 11   module.exports = router;
 12 })();

Ok So I have some requirements, I would like to be able to use Socket.IO anywhere throughout my server, specifically within the routes to send out events when any CRUD operations have been performed. 
 
The following is a file named sockets.js which I am using to initialize my sockets. 
 
(function IIFE() {
  2   'use strict';
  3
  4   var socketIO = require('socket.io');
  5
  6   exports.initialize = function (server) {
  7     var io = socketIO.listen(server)
  8
  9     io.sockets.on('connection', (socket) => {
 10       console.log(socket)
 11       console.log("Connected");
 12
 13       io.sockets.on('disconnect', (socket) => {
 14         console.log('Disconnect')
 15       });
 16     });
 17   }
 18
 19 })();
 
The following is my app.js which is essentially my server. 
 
    2 (function IIFE() {
    3   'use strict';
    4
    5   const chalk = require('chalk');
    6
    7   if(!process.env.NODE_ENV) {
    8     console.log(chalk.red('No environment specified...') + chalk.blue('defaulting to \'development\''));
    9     process.env.NODE_ENV = 'development';
   10   }
   11
   12   const express = require('express');
   13   const mongoose = require('mongoose');
   14
   15   const config = require('./config/environment');
   16
   17   mongoose.connect(config.mongo.uri, config.mongo.options);
   18
   19   mongoose.connection.on('error', function(err) {
   20     console.error('Mongo Error: ' + err);
   21   });
   22
   23   const app = express();
   24   const server = require('http').createServer(app);
   25
+  26   var io = require('./sockets.js');
+  27   io.initialize(server);
+  28
   29   require('./config/express')(app);
   30   require('./routes')(app);
   31
   32   server.listen(config.port, config.ip, function() {
   33     console.log('order-api listening on %d in %s mode', config.port, app.get('env'));
   34   });
   35
   36   exports = module.exports = app;
   37 })();
 
The following file is in another folder called api. The entire application is a functioning application I am trying to integrate sockets into. However I cannot seem to understand how to Integrate sockets from my sockets.js and use them in the following route handlers. 
 
(function IIFE() {
  2   'use strict';
  3
  4   const router = require('express').Router();
  5
  6   router.use('/carts', require('./cart'));
  7   router.use('/orders', require('./order'));
  8   router.use('/reports', require('./report'));
  9   router.use('/validators', require('./validator'));
 10
 11   module.exports = router;
 12 })();

原文：https://stackoverflow.com/questions/42237632