What difficulties can WebSocket encounter when writing data simultaneously?

The following difficulties may arise when recording data simultaneously via WebSocket:

• Message loss: if multiple messages are sent simultaneously without proper order or synchronization, some data may be lost or overwritten.

• Race condition: if the server or client does not process messages sequentially, the application state may become inconsistent.

• Thread safety issues: if message processing occurs in multiple goroutines without proper synchronization, errors may occur.

• Message queue management: it is necessary to properly organize the message queue to ensure order and data integrity.

To address these issues, Go often uses channels for sequential message processing and mutexes to protect shared resources.

Example of using a mutex to protect writing:

var mu sync.Mutex

func writeData(conn *websocket.Conn, data []byte) error {
    mu.Lock()
    defer mu.Unlock()
    return conn.WriteMessage(websocket.TextMessage, data)
}