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I try to make a client-server app with socket.io.

Socket.io server seems work but the client cannot connect to it. The error i get is about the '/socket.io/socket.io.js' like what it is unable to load it.

So here are my questions

  • is it mandatory to have server and client in the same folder as we can see in the official demo ?
  • can we make a nodejs socket.io server without express ?

Depending on how your project is setup, you need to create 2 server files, 1 for the app, and one for the websockets, and every time a user opens the app it should open(and be told where to try and open the connection) a connection to the websockets server. On my websockets apps I have the app running on localhost:3000, and websockets server on localhost:3001 (and tell the app to look for a server on 3001), so really you don't need to have the server files in the same folder, they can be in 2 opposite ends of your computer, as long as the app points to the server, then your fine, once a connection has been opened, the websocket server will see the client, and it should work! Let me know if that make sense.

Writing WebSocket servers, We host a WebSocket Echo Server at ws://demos.kaazing.com/echo which additionally supports Binary requests ("Blob", "Array Buffer" and "Byte Buffer"). The  WebSocket-Client-Server Websockets are a bidirectional, single-socket connection. With WebSocket, your HTTP request becomes a single request to open a WebSocket connection and reuses the same connection between client and server. Also, WebSocket reduces latency.

  1. No, you can download socket.io front-end lib from another sources, for example cdn. Be sure you installed the right version.

  2. Yes, you can make it without express. Express is just another option for creating an socket.io server.

For example, currently in my project that is written in another back-end node framework i'm using the code below to establish the socket.io server.

const io = require("socket.io")(2337); 
io.on("connection", socket =>
  // some code
)

WebSocket, Learn how to use WebSockets to add low latency bidirectional client-server communication to your web app. However, the only public implementations of client and server WebSockets are supported on Windows 8 and Windows Server 2012. The class elements in the System.Net.WebSockets namespace that are supported on Windows 7, Windows Vista SP2, and Windows Server 2008 are abstract class elements. This allows an application developer to inherit and extend these abstract class classes and class elements with an actual implementation of client WebSockets.

I fixed the problem of websocket communication between my server and my client.

After inspected my html client file, i saw on the console this error message 'ReferenceError: io is not defined'.

I google that error and i found this.

WebSocket : Simple client and Server, The WebSocket protocol enables interaction between a web browser (or other client application) and a web server with lower overhead than half-duplex  If you want to write a client websocket application, there is a ClientWebSocket class available which basically wraps up a lot of this same functionality. It’s pretty easy to use and you should be able to apply the same async Task techniques to keep your application responsive.

websocket.org Echo Test, WebSockets - Communicating with Server - The Web has been largely built around the request/response paradigm of HTTP. A client loads up a web page and  When I was looking for samples of WebSocket Server in NodeJS most results where using socket.io.But since I was learning I needed some more basic one. First I thought of using simple net.Socket, later I came to know that its just a TCP socket and WebSocket won’t works with it unless you use websockify to bridge in between.

Introducing WebSockets: Bringing Sockets to the Web, Once the server and client both have their handshakes in, they can send data to each other with less overhead at will. WebSocket communication  Client - Server WebSocket handshake. Ask Question Asked 8 years, 6 months ago. Active 2 months ago. Viewed 6k times 2. 4. I'm trying to implement a simple web socket

WebSocket, In response, the server will push a greeting into a queue to which the client is subscribed. What You Need. About 15  Websocket Client and Server for benchmarks with Millions of concurrent connections. - oatpp/benchmark-websocket