Express.js,bin / www设置和Socket.io

时间:2015-11-13 06:40:43

标签: node.js express socket.io

问题已解决。

请参阅下面的答案。

问题:

我正试图在相同的端口上进行socketio并表达工作,这是我得到的错误。

events.js:141
      throw er; // Unhandled 'error' event
      ^
Error: listen EACCES 0.0.0.0:80
    at Object.exports._errnoException (util.js:874:11)
    at exports._exceptionWithHostPort (util.js:897:20)
    at Server._listen2 (net.js:1221:19)
    at listen (net.js:1270:10)
    at Server.listen (net.js:1366:5)
    at Object.<anonymous> (/Users/app.js:22:8)
    at Module._compile (module.js:435:26)
    at Object.Module._extensions..js (module.js:442:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)

我可以使用sudo npm start启动我的服务器,但现在我有两台运行的服务器,localhost:3000(express)和localhost:80(express和socket.io)

  

如何在不破坏任何内容的情况下禁用:3000   箱/万维网?

我正在使用Express 4。

这是我的观点

html
    head
        title Socket.io
        script(src="/socket.io/socket.io.js")
    body
        script(src="javascripts/ol.js")

ol.js(客户端)

var socket = io.connect('http://localhost');
socket.on('news', function (data) {
    console.log(data);
    socket.emit('my other event', {my: 'data'});
});

这是我的app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var http = require('http');
var router = express.Router();

var app = express();

var server = http.Server(app);
var io = require('socket.io')(server);
server.listen(80);

io.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});

io.on('error', function () {
    console.log("errr");
});


// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');
app.set('view options', {layout: false});
app.use(logger('dev'));
app.use(bodyParser.json());

app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.get('/testit', function (req, res) {
    res.send("it works!");
});

// 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: {}
    });
});

module.exports = app;

当我使用3000而不是80用于server.listen并且如果我使用节点app.js而不是npm开始运行我的应用程序,我没有看到任何问题,一切正常,但socketio覆盖Express.js的设置那样的?

我根本没碰到bin / www文件。就在下面。

#!/usr/bin/env node

/**
 * Module dependencies.
 */

var app = require('../app');
var debug = require('debug')('future:server');
var http = require('http');

/**
 * Get port from environment and store in Express.
 */

var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

/**
 * Create HTTP server.
 */

var server = http.createServer(app);



/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
  var port = parseInt(val, 10);

  if (isNaN(port)) {
    // named pipe
    return val;
  }

  if (port >= 0) {
    // port number
    return port;
  }

  return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  var bind = typeof port === 'string'
    ? 'Pipe ' + port
    : 'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  var addr = server.address();
  var bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);
}

1 个答案:

答案 0 :(得分:4)

  1. 在您的主目录中创建一个名为io.js的文件(我可以选择这样做,但您可以将其放在其他地方)
  2. io.js

    var io = require('socket.io')(); // yes, no server arg here; it's not required
    // attach stuff to io
    module.exports = io;
    
    1. 打开bin / www
    2. var app = require('../app');

      之后定义您的io变​​量

      var io = require('../io');

      io.attach(server);

      之后放置server.listen(port)
      1. 打开app.js
      2. io.on

        之后定义您的io变​​量和var app = express();部分
        var io = require('./io');
        
        io.on('connection', function (socket) {
            socket.emit('news', {hello: 'world'});
            socket.on('my other event', function (data) {
                console.log(data);
            });
        });
        
        io.on('error', function () {
            console.log("errr");
        });
        

        最后,我们的观点。不要担心socket.io.js的存在,它就在那里。您不必手动下载它或包含除此之外的一些外部文件。

        html
            head
                title Socket.io
                script(src="/socket.io/socket.io.js")
            body
                script(src="javascripts/ol.js")
        

        ol.js(测试)

        var socket = io.connect('http://localhost:3000');
        socket.on('news', function (data) {
            console.log(data);
            socket.emit('my other event', {
                my: 'data'
            });
        });