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server.js
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server.js
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var express = require('express'),
app = express(),
server = require('http').createServer(app),
io = require('socket.io').listen(server); //引入socket.io模块并绑定到服务器
app.use('/', express.static(__dirname + '/www'));
//监听80端口
server.listen(8888);
console.log('server started');
//socket部分
users=[];
io.on('connection', function(socket) {
//昵称设置
socket.on('login', function(nickname) {
if (users.indexOf(nickname) > -1) {
socket.emit('nickExisted');
} else {
socket.userIndex = users.length;
socket.nickname = nickname;
users.push(nickname);
socket.emit('loginSuccess');
//向所有连接到服务器的客户端发送当前登陆用户的昵称
io.sockets.emit('system', nickname, users.length, 'login');
}
});
//断开连接的事件
socket.on('disconnect', function() {
//将断开连接的用户从users中删除
users.splice(socket.userIndex, 1);
//通知除自己以外的所有人
socket.broadcast.emit('system', socket.nickname, users.length, 'logout');
});
//接收新消息
socket.on('postMsg', function(msg,color) {
//将消息发送到除自己外的所有用户
socket.broadcast.emit('newMsg', socket.nickname, msg,color);
});
socket.on('img', function(imgData) {
//通过一个newImg事件分发到除自己外的每个用户
socket.broadcast.emit('newImg', socket.nickname, imgData);
});
});