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const 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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let kit={
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isHaveUser(user){
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var flag=false;
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users.forEach(function (item) {
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if(item.name==user.name){
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flag=true;
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}
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})
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return flag;
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},
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delUser(id){
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users.forEach(function (item,index) {
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if(item.id==id){
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users.splice(index, 1);
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}
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})
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}
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}
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app.use('/', express.static(__dirname + '/static'));
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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 (kit.isHaveUser(user)) {
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console.log("登录失败！",user)
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socket.emit('loginFail',"登录失败,昵称已存在!");
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} else {
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socket.user = user;
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user.id=socket.id;
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console.log("登录成功！",user)
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socket.emit('loginSuccess',user,users);
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users.push(user)
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socket.broadcast.emit('system', user,'join');
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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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kit.delUser(socket.id);
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console.log("用户退出！",socket.user)
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socket.broadcast.emit('system', socket.user, 'logout');
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}
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});
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//群发消息
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socket.on('groupMessage', function(msg,from){
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if(!socket.user){
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from.id=socket.id;
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socket.user=from;
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users.push(from);
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socket.broadcast.emit('system', from,'join');
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socket.emit('loginSuccess',from,[]);
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}
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socket.broadcast.emit('groupMessage', socket.user, msg);
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});
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//发送私信
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socket.on('message', function(id,msg,from) {
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if(!socket.user){
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from.id=socket.id;
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socket.user=from;
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users.push(from);
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socket.broadcast.emit('system', from,'join');
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socket.emit('loginSuccess',from,[]);
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}
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socket.broadcast.to(id).emit('message',socket.user,msg);
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});
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});
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server.listen(3000,function () {
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console.log("服务器已启动在：3000端口","http://localhost:3000`")
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}); |