const EventEmitter = require('events'); let sessions = new Map(); let publishers = new Map();//RTMP推流客户端 let nodeEvent = new EventEmitter(); let stat = { inbytes: 0, outbytes: 0, accepted: 0 }; let ssrcs = new Map(); //ssrc和注册用户映射关系表,键是ssrc, 值是 {id,chid,play} module.exports = { sessions, publishers, nodeEvent, stat , ssrcs};