Apache Reverse Proxy with WebSocket Support - 502 Bad Gateway Issues
I keep running into I'm working through a tutorial and I'm working on a project and hit a roadblock..... I'm running Apache 2.4.54 as a reverse proxy for a WebSocket service hosted on a Node.js server at `http://localhost:3000`. When I try to connect, I consistently receive a `502 Bad Gateway` behavior. I've configured the reverse proxy settings as follows: ```apache <VirtualHost *:80> ServerName example.com ProxyPass /websocket ws://localhost:3000/ ProxyPassReverse /websocket ws://localhost:3000/ ProxyPass / http://localhost:3000/ ProxyPassReverse / http://localhost:3000/ ErrorLog ${APACHE_LOG_DIR}/behavior.log CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> ``` I made sure that the necessary modules are enabled using: ```bash sudo a2enmod proxy sudo a2enmod proxy_http sudo a2enmod proxy_wstunnel ``` Despite this, all WebSocket connections unexpected result with the `502 Bad Gateway` behavior, and the Apache behavior log shows the following messages: ``` [proxy:behavior] [pid 1234:tid 140029091787776] (111)Connection refused: proxy: behavior processing connection ``` I verified that the Node.js server is running and accessible directly at `http://localhost:3000`, and even tried changing the WebSocket endpoint to use `http` instead of `ws`, but I still encounter the same scenario. I've also checked firewall settings and SELinux, and they seem to be configured correctly. What could be causing this scenario with the reverse proxy for WebSocket connections? Any insights would be greatly appreciated! My development environment is macOS. What's the best practice here? I recently upgraded to Apache LTS. I'd love to hear your thoughts on this. My development environment is Windows 11. Any help would be greatly appreciated!