Socket.IO

问题 I've successfully made a callback with http://socket.io when the client calls the server socket.on('event', function(data, fn){ fn(null, true); } I was wondering if its possible to do the same but this time when the server calls the client? 回答1: The emit and on works exactly same on both sides: client and server. So if you emit to client-socket on server side, then if on client-side you are subscribed to that event, it will trigger it. And vice versa. What you are confused by is that server

问题 I've successfully made a callback with http://socket.io when the client calls the server socket.on('event', function(data, fn){ fn(null, true); } I was wondering if its possible to do the same but this time when the server calls the client? 回答1: The emit and on works exactly same on both sides: client and server. So if you emit to client-socket on server side, then if on client-side you are subscribed to that event, it will trigger it. And vice versa. What you are confused by is that server

问题 I'm new to Node.js and Socket.IO and I wanted to try the example explained at https://socket.io/get-started/chat/ I did everything I had to do and it works: I opened two tabs and messages appear in both clients, but for some reason they appear after 5/6 seconds (sometimes even later). Do you guys know why (I'm using windows 10)? This is the index.js file code: var app = require('express')(); var http = require('http').createServer(app); var io = require('socket.io')(http); var port = process

问题 The socketio client successfully connects to the server and sends messages with emit to the server but the other direction server to the client fails. I cannot find the source of error. It is Here is the server python in app.py based on the example in python-socketio website: from aiohttp import web import socketio sio = socketio.AsyncServer() app = web.Application() sio.attach(app) async def index(request): """Serve the client-side application.""" with open('index.html') as f: return web

问题 I'm pretty new to nodejs and socket.io. At the time I don't know anything about nodejs. I met a horrible error. My whole steps to install nodejs (on Windows 7): - Access nodejs.org and click to their green download button. - Install nodejs in F:/nodejs - Install socket.io with command npm install socket.io - Install node supervisor with command npm install supervisor -g That's all. Then I try to use socket.io with this line: var io = require('socket.io').listen(app); And it output an error:

问题 I've been trying to debug this for a couple of days now, I've had experience with sockets on 1 other app but it was on the same domain, I didn't think I'd have this much trouble with a cross domain vue.js app though I have been debugging this myself to my best efforts and have tried basically everything I can think of. In the node.js server I have set origins with let io = require('socket.io')(http, {origins: '*:* agora.dev:*'}) and then I listen for connections with io.on('connection',

问题 I have the following code in index.js file located into functions folder in my google firebase proyect: net=require('express')() net.get('/',function(req,res){res.sendFile(__dirname+'/slave.htm')}) exports.run=require('firebase-functions').https.onRequest(net) require('socket.io').listen(net).on("connection",function(socket){}) But when I execute \gfp1>firebase deploy in command prompt, this give me that errors: You are trying to attach socket.io to an express request handler function. Please

问题 I have the following code in index.js file located into functions folder in my google firebase proyect: net=require('express')() net.get('/',function(req,res){res.sendFile(__dirname+'/slave.htm')}) exports.run=require('firebase-functions').https.onRequest(net) require('socket.io').listen(net).on("connection",function(socket){}) But when I execute \gfp1>firebase deploy in command prompt, this give me that errors: You are trying to attach socket.io to an express request handler function. Please

问题 my application, using socket.io, cant connect to node.js server. server node.js var app = require('http').createServer() var io = require('socket.io')(app); app.listen(1000); io.on('connection', function (client) { client.name = client.remoteAddress + ':' + client.remotePort; console.log(client.name + ' connected!'); client.on('sensorChanged', function (data) { console.log("HERE"); console.log(data); }); }); android application: SocketIO socket = new SocketIO(); try { socket.connect("http:/

问题 I am currently trying to use socket.io and a node.js server to communicate with a Unity script. I have everything hooked up and working with localhost, but for some reason when I port it to my Heroku server it can't connect. I'm assuming it might have something to do with the URL's? I'm new to socket.io so any help would be appreciated. My node.js server: var express = require('express'); var app = express(); var expressWs = require('express-ws')(app); var path = require('path'); var server =