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52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
var express = require('express'),
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app = express(),
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server = require('http').createServer(app),
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io = require('socket.io').listen(server),
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users = [];
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app.use('/', express.static(__dirname + '/app'));
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server.listen(process.env.PORT || 3000);
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io.sockets.on('connection', function(socket) {
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//创建用户链接
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socket.on('login', function(user) {
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if (isHave(user)) {
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socket.emit('nickExisted');
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} else {
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var address=socket.handshake.address.address+":"+socket.handshake.address.port;
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user.address=address;
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socket.userIndex = users.length;
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socket.user = user;
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user.id=socket.id;
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users.push(user);
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socket.emit('loginSuccess');
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io.sockets.emit('system', user,users, users.length, 'login');
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};
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});
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//用户注销链接
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socket.on('disconnect', function() {
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if (socket.user != null) {
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users.splice(socket.userIndex, 1);
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socket.broadcast.emit('system', socket.user,users,users.length, 'logout');
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}
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});
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//新建消息
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socket.on('postMsg', function(msg, color) {
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socket.broadcast.emit('newMsg', socket.user, msg, color);
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});
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//新建图片信息
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socket.on('img', function(imgData, color) {
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socket.broadcast.emit('newImg', socket.user, imgData, color);
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});
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//判断用户名是否存在
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function isHave(user) {
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var flag=false;
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for(var i=0;i<users.length;i++){
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if(users[i].nickName==user.nickName){
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flag=true;
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break;
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}
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}
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return flag;
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}
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}); |