在socket.io的简介中看到的关于server的创建方式
var app = require(‘express’)(); var server = require(‘http’).createServer(app); ***************some setting… server.listen(port);
var app = require(‘express’).createServer(); ********************any setting??? app.listen(port);
1.这两种创建方式有什么区别吗?还是一样的效果?
2.对于第一种方式使用时,可以进行配置如app.set(port)、app.set(“view”)、app.set(“view engine”)、 app.use(express.logger(‘dev’)); app.use(express.bodyParser());…想请教, 是不是这些配置在 server.listen()之前配置就会都生效???? 3.在第二种方式创建server的时候,也使用上述配置,配置还可否生效呢?
4.在引入socket.io模块的时候,要监听server,那么我正确的引入socket.io是要在什么时候呢?是在那些配置之后呢,还是在配置之前就可以???还是socket.io只是在监听该server,和web操作的这些配置没有任何关系呢?此处求详解!!!
var app = require(‘express’)(); var server = require(‘http’).createServer(app);
var io = require(‘socket.io’).listen(server);//这个位置引入 ***************some setting… var io = require(‘socket.io’).listen(server);//和上面引入有区别吗?
server.listen(port);
var app = require(‘express’).createServer();
var io = require(‘socket.io’).listen(server);//这个位置引入 ********************any setting??? var io = require(‘socket.io’).listen(app);//和上面引入有区别吗?
app.listen(port);
var express = require('express'),
path = require('path'),
http = require('http'),
io = require('socket.io'),
wine = require('./routes/wines');
var app = express();
app.configure(function () {
app.set('port', process.env.PORT || 3000);
app.use(express.logger('dev'));
app.use(express.bodyParser())
app.use(express.static(path.join(__dirname, 'public')));
});
var server = http.createServer(app);
io = io.listen(server);
io.configure(function () {
io.set('authorization', function (handshakeData, callback) {
if (handshakeData.xdomain) {
callback('Cross-domain connections are not allowed');
} else {
callback(null, true);
}
});
});
server.listen(app.get('port'), function () {
console.log("Express server listening on port " + app.get('port'));
});
app.get('/wines', wine.findAll);
app.get('/wines/:id', wine.findById);
app.post('/wines', wine.addWine);
app.put('/wines/:id', wine.updateWine);
app.delete('/wines/:id', wine.deleteWine);
io.sockets.on('connection', function (socket) {
socket.on('message', function (message) {
console.log("Got message: " + message);
ip = socket.handshake.address.address;
url = message;
io.sockets.emit('pageview', { 'connections': Object.keys(io.connected).length, 'ip': '***.***.***.' + ip.substring(ip.lastIndexOf('.') + 1), 'url': url, 'xdomain': socket.handshake.xdomain, 'timestamp': new Date()});
});
socket.on('disconnect', function () {
console.log("Socket disconnected");
io.sockets.emit('pageview', { 'connections': Object.keys(io.connected).length});
});
});
这是一个例子,我没细看,你可以参考
exports.createServer = function(){
console.warn('Warning: express.createServer() is deprecated, express');
console.warn('applications no longer inherit from http.Server,');
console.warn('please use:');
console.warn('');
console.warn(' var express = require("express");');
console.warn(' var app = express();');
console.warn('');
return createApplication();
};
[地址][https://github.com/visionmedia/express/blob/master/lib/express.js]
源码里的这个函数,说明第二种写法是过时了的…应该用第一种写法
哥,咋看出来的?我没看懂?上面这段代码能说明什么?
@wanghantong 那几行警告不是写了吗,express.createServer()是过时的方法