[英]Socket.io - listen events in separate routes?
如何在單獨的路線中監聽事件? 這類似於我正在嘗試做的事情。 例如:
import Koa from 'koa'
import serve from 'koa-static'
import Router from'koa-router'
import views from 'koa-views'
import socket from 'socket.io'
import http from 'http'
import config from'./config'
const app = new Koa()
const router = new Router()
const server = http.createServer(app.callback())
const io = new socket(server)
app.use(async function (ctx, next) {
ctx.io = io
await next()
})
const test1 = async(ctx, next) => {
ctx.io.on('connection', (socket) => {
console.log('a user connected - event 1')
socket.on('disconnect', () => {
console.log('user disconnected')
})
socket.on('Event1', (data) => {
console.log('Event1')
})
})
await ctx.render('test1', {});
}
const test2 = async(ctx, next) => {
ctx.io.on('connection', (socket) => {
console.log('a user connected - event 2')
socket.on('disconnect', () => {
console.log('user disconnected')
})
socket.on('Event2', (data) => {
console.log('Event2')
})
})
await ctx.render('test2', {});
}
router
.get('/', function (ctx, next) {
ctx.body = 'Hello World!';
})
.get('/test1', test1)
.get('/test2', test2)
app.use(serve(config.static_dir.root))
app.use(views(__dirname + config.template.path, config.template.options))
app
.use(router.routes())
.use(router.allowedMethods())
server.listen(config.server.port)
它們可以正常工作,但存在錯誤-當您為'/test1'
刷新瀏覽器3次時,io實例將被重復 ,因此我將在下面得到重復的結果:
a user connected - event 1
a user connected - event 1
a user connected - event 1
我想我一定錯過了某件事或做錯了。
有任何想法嗎?
編輯:套接字中的命名空間可用於連接到不同於/
路由。 https://socket.io/docs/rooms-and-namespaces/#custom-namespaces
例:
io.of('/chat').on('connection', function(socket){
console.log('someone connected');
});
將此代碼移出聊天中間件。 它應該只執行一次。 只需將其放在函數旁邊,它應該可以工作。
io.on('connection', (socket) => {
console.log('a user connected')
socket.on('disconnect', () => {
console.log('user disconnected')
})
socket.on('chat.message', (msg) => {
console.log('message: ' + msg)
io.emit('chat.message', msg)
})
});
要使套接字文件在不同於默認path
在創建io實例時使用path
config。
例:
const io = new socket(server, { path: '/chat', serveClient: false });
此處提供更多信息: https : //socket.io/docs/server-api/#new-server-httpserver-options
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