node polling 高性能长轮询服务器，单定时器+事件库

节点轮询高性能长轮询服务器，单定时器+事件库。例子： var HttpConn = require('node-polling').create(); HttpConn.start(3000, '127.0.0.1'); HttpConn.on('conn', function(uid, queryObj, data){ console.log('event_conn:', JSON.stringify(arguments)); setTimeout(function(){ HttpConn.SendByUid(uid, 'hello,world'); }, 3000); }); HttpConn.on('close', function(uid){ console.log('event_close:', JSON.stringif