Secure WebSocket Implementations

WebSocket connections require special security considerations due to their persistent nature and bidirectional communication. Traditional HTTP security headers don't apply to WebSocket connections, requiring alternative protection mechanisms. Authentication must occur during the handshake phase, as subsequent messages lack standard HTTP authentication headers.

Message-level security becomes crucial for WebSocket communications. Each message should include authentication tokens or signatures to prevent session hijacking. Rate limiting must account for message frequency rather than request count. Input validation remains critical, as WebSocket messages can contain any data format.