使用socket.io配置Express 4.0路由

Question

我创建了一个新的Express应用程序.它为我生成了app.js然后我创建了以下index.js引入socket.io:

var app = require('./app');
server=app.listen(3000);

var io = require('socket.io');
var socket = io.listen(server, { log: false });

socket.on('connection', function (client){
    console.log('socket connected!');
});

任何人都可以建议我如何访问路由文件中的socket.io？

作为参考,默认生成的app.js如下:

var express = require('express');
var path = require('path');
var favicon = require('static-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var users = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(favicon());
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/users', users);

/// catch 404 and forwarding to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

/// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;

Answer 1

SocketIO不适用于与套接字一起使用的路由.

这就是说,你可能需要使用快递-io的,而不是为这个专门为此做,或者如果你正在建设一个实时web应用程序,然后使用尝试sailsjs已经有socketIO集成到它.

这是你的主要 app.js

app = require('express.io')()
app.http().io()

app.listen(7076)

然后在您的路线上执行以下操作:

app.get('/', function(req, res) {
    // Do normal req and res here
    // Forward to realtime route
    req.io.route('hello')
})

// This realtime route will handle the realtime request
app.io.route('hello', function(req) {
    req.io.broadcast('hello visitor');
})

请参阅此处的express-io文档.

或者你可以这样做,如果你真的想坚持快递+ socketio

在你的 app.js

server = http.createServer(app)
io = require('socket.io').listen(server)
require('.sockets')(io);

然后创建一个文件 sockets.js

module.exports = function(io) {

    io.sockets.on('connection', function (socket) {
        socket.on('captain', function(data) {
            console.log(data);
            socket.emit('Hello');
        });
    });
};

然后,您可以将其调用到您的路由/控制器.

Answer 2

路线：

const Router = require('express').Router

const router = new Router();

router.get('/my-route', (req, res, next) => {
    console.log(req.app.locals.io) //io object
    const io = req.app.locals.io
    io.emit('my event', { my: 'data' }) //emit to everyone
    res.send("OK")
});

module.exports = router

主文件：

const app = require('express')()
const server = require('http').Server(app);
const io = require('socket.io')(server)
const myroute = require("./route") //route file dir

app.use(myroute);

server.listen(3000, () => {
    console.log('¡Usando el puerto 3000!');
});

app.locals.io = io