Why does Nginx interfere with Socket.io?

Question

Nginx

Hello! There is a chat on NodeJS + Socket.io, there is also a website. Installed everything on one server. Without Nginx everything works fine. Installed Nginx, and that's it, the chat stopped working. I understand that Nginx gives out socket.io files as static, but although these files are dynamic. How to make nginx not touch a specific folder at all? Or how to solve the problem in general?

Answer 1

nginx accesses the backend over HTTP 1.0, which is incompatible with WebSockets.
The latest versions of nginx already know how to work with the HTTP 1.1 backend, try to take a newer version of nginx and enable the proxy_http_version 1.1 directive for the backend;