Heroku上的NodeJS+ExpressJS+SocketIO给出了GET/socket...404

Question

我在设置socketIO 1.1以在Heroku上工作时遇到了问题。我在运行Express V4.2。socketio在localhost上运行得很好。然而，在Heroku上，它给出了这个错误：

来自Heroku日志：

2014-09-15T09:40:14.578660+00:00 app[web.1]: GET /socket.io/?EIO=3&transport=polling&t=1410774014583-86 404 6ms - 744b

从浏览器：

GET http://[mydomainname]/socket.io/?EIO=3&transport=polling&t=1410774080589-97 404 (Not Found) socket.io.js:2680Request.create socket.io.js:2680Request socket.io.js:2614XHR.request socket.io.js:2555XHR.doPoll socket.io.js:2585Polling.poll socket.io.js:2951Polling.doOpen socket.io.js:2895Transport.open socket.io.js:2106Socket.open socket.io.js:1580Socket socket.io.js:1467Socket socket.io.js:1419Manager.open.Manager.connect socket.io.js:272(anonymous function)

我遵循了套接字IO文档中推荐的配置。相关代码如下：

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

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

var app = express();

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

app.use(favicon());
app.use(logger('dev'));

app.use(bodyParser.json());
app.use(bodyParser.urlencoded());
app.use(cookieParser('hashionhashion'));
app.use(require('less-middleware')(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));

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


/// catch 404 and forward 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: {}
    });
});



//start the server
var server = require('http').Server(app);

var io = require('socket.io').listen(server);
var ioSockets = {};

io.on('connection', function(socket) {

    ioSockets[socket.id] = socket;

    socket.emit('welcome', {message: socket.id});

    socket.on('disconnect', function(socket) {
        delete ioSockets[socket.id];
    });
});

exports.ioSockets = ioSockets;
module.exports = app;

server.listen(3000, function() {
    console.log('Congrats, nothing broke!! Listening on port %d', server.address().port);
});

在我的客户端文件中，脚本如下：

<script src="my_path_to/socket.io.js"></script>
<script>
var socket = io.connect();

var socketId = '';

socket.on('welcome', function (data) {
    socketId = data.message;
});
</script>

我还尝试了io.connect到“http://localhost”、“http://localhost:3000”和我的Heroku应用程序域。它们都会产生相同的错误。

任何帮助都将不胜感激！

Answer 1

这个问题最终是一个明确的问题，在4.10.0之后的版本中已经纠正了这个问题。

供您自己阅读：https://github.com/strongloop/express/issues/2406 https://github.com/jshttp/on-finished/issues/10