从不带socket.io的node.js向客户端发送消息

Question

I'd like to be able to send a message to a client from a node.js app, without using something like socket.io. For example, is it possible to send from the client an AJAX request that won't expire? Then, where there is data on the server side, I can use the that session to push the message to the client. Or may be, someone has better idea?

Of course polling from the client is the trivial answer, but I'd like to avoid this.

Thanks a lot in advance.

Answer 1

You can use Server-Sent Events . Here's a module that will handle the harder parts for you: https://www.npmjs.com/package/sse