What difficulties can arise when implementing WebSocket connections in an application?

When implementing WebSocket connections in an iOS application, you may encounter several challenges:

• Managing the connection lifecycle: you need to correctly open, maintain, and close the connection, considering the app's transitions to the background and back.
• Handling unstable connections: mobile networks often change, so it is necessary to implement reconnection logic and error handling.
• Security issues: it is important to use secure WebSockets (wss://) and properly handle authentication.
• Server compatibility: the server must support the WebSocket protocol and correctly process messages.

For working with WebSocket in iOS, you can use URLSessionWebSocketTask or third-party libraries like Starscream, which facilitate implementation and connection management.