WebSocket

WebSocket is a communication protocol that enables a full-duplex, two-way connection between a client (like a web browser) and a server. Unlike traditional HTTP, where the client has to constantly send requests to get new information, a WebSocket connection remains open and allows the server to send data to the client in real-time. This makes it ideal for applications that require live updates, such as chat rooms, online gaming, and stock tickers.

Example: A new gaming platform is developed with a login system that uses WebSocket to provide real-time updates. A quality assurance team would perform testing on this feature. They would:

1. Verify Connection: Check that when a user attempts to log in, a stable WebSocket connection is successfully opened with the server.
2. Test Real-Time Updates: Simulate a login attempt from a different device. When a successful login occurs, the server should immediately send a real-time message to all other open sessions for that user, notifying them of the new login.
3. Check Data Integrity: Ensure that the data packets containing the real-time updates are received correctly without any corruption or data loss.

This process ensures the login system is secure and responsive, providing a seamless user experience.