Hello everyone, I’m developing an iOS application that uses WebSocket Secure (wss) to connect to a backend server, which is working correctly. The server is hosted on Render.com and accepts connections over https and wss. Context: • I can connect to the backend without issues using HTTPS from both the app and a web browser. • Using Node.js and the Socket.IO client, the WebSocket connection to the server works correctly over wss://. • The server is configured with a valid SSL certificate (the HTTPS connection is verified and works in a browser). • The problem occurs when I try to connect from the iOS client (using Socket.IO in Swift) to the server through wss://social-gamer-backend.onrender.com. The connection consistently fails on iOS. The Issue: Even though the URL is correctly configured, and I can connect via Node.js, when I attempt to connect from the iOS app, I get connection-related errors. The most common error is: Error while connecting to the socket: Tried emitting when not connected • The server URL is correct (wss://social-gamer-backend.onrender.com). • The JWT token is being sent correctly in the headers. • There are no visible SSL certificate issues since the HTTPS connection works fine. • I’ve tried enabling and disabling App Transport Security (ATS) in the Info.plist. • From Node.js, the same connection code works fine, indicating that the WebSocket server is active and operational. Current iOS Configuration: let manager = SocketManager(socketURL: url, config: [ .log(true), .compress, .reconnects(true), .forceWebsockets(true), .extraHeaders(["Authorization": "Bearer (token)"]) ]) What I’ve tried so far: 1. I’ve tested the connection on different networks, including Wi-Fi and mobile data. 2. I’ve checked the iOS device restrictions and disabled potential network limitations. 3. I’ve enabled detailed logs in Crashlytics, but I can’t find any relevant information indicating why the connection is failing. 4. The same URL with wss:// works on Node.js, so it’s not an issue with the WebSocket server. Question: What could be preventing the iOS app from establishing a successful connection to the WebSocket server over wss://? Is there anything else I should configure in the app or server to allow iOS to handle secure WebSocket connections? I would appreciate any help or suggestions to resolve this issue. Thank you in advance.