socket在egg中的使用实例代码详解

 exports.io = { init: {}, namespace: {  '/': {  //对应router.js里的 of('/')  connectionMiddleware: [ 'auth' ], //对应io/middleware/auth  packetMiddleware: [ 'filter' ],  }, }, };

exports.io = { enable: true, package: 'egg-socket.io',};

 io.of('/').route('chat', io.controller.chat.index); io.of('/').route('message', io.controller.chat.message); io.of('/').route('user:online', io.controller.chat.online);

/** * Created by bear on 2018/2/12. */const PREFIX = 'room'; //定义房间号module.exports = app => { return async (ctx, next) => { const { app, socket, logger, helper } = ctx; const id = socket.id; const nsp = app.io.of('/'); const query = socket.handshake.query; // 用户信息 const { room, userId } = query; //获取socket链接传过来的参数 const rooms = [ room ]; console.log(room, userId); const tick = (id, msg) => {  logger.debug('#tick', id, msg);  // 踢出用户前发送消息  socket.emit(id, helper.parseMsg('deny', msg));  // 调用 adapter 方法踢出用户，客户端触发 disconnect 事件  nsp.adapter.remoteDisconnect(id, true, err => {  logger.error(err);  }); }; // 检查房间是否存在，不存在则踢出用户 // 备注：此处 app.redis 与插件无关，可用其他存储代替  const hasRoom = await app.redis.get(`${PREFIX}:${room}`); console.log(hasRoom,`${PREFIX}:${room}`) // if (!hasRoom) { // tick(id, { //  type: 'deleted', //  message: 'deleted, room has been deleted.', // }); // return; // } // 用户加入 logger.debug('#join', room); socket.join(room); // 在线列表 nsp.adapter.clients(rooms, (err, clients) => {  // 更新在线用户列表  nsp.to(room).emit('online', {  clients,  action: 'join',  target: 'participator',  message: `User(${id}) joined.`,  });  console.log(123,clients) }); // socket.emit('connect', 'packet received!');  await next(); console.log('disconnect!'); };};

module.exports = (app) => { return async (ctx, next) => {  // console.log(ctx.packet);  await next();  // console.log('packet response!'); };};

/** * Created by bear on 2018/2/12. */module.exports = app => { class chatController extends app.Controller { async index() {  this.ctx.socket.emit('res', 'test'); } async message() { //方法通过 客户端 this.emit（'message',{}）//触发  this.ctx.socket.emit('message', 'test');  const params = this.ctx.args[0];  // this.ctx.service.message.sendPeerMessage(params);  console.log(2,params); } async online() {// modelMessage.sendOfflineMessage(socket, data.userId); } } return chatController;};