websocket-tests

Per [RFC 6455], tests must cover the handshake, control frames, close codes, and subprotocol negotiation - not just message round-trips.

When to use

• Testing a real-time service: chat, notifications, collaborative editing, live dashboards.
• Validating reconnection logic after server-side restart or network partition.
• Pre-deployment gate: the close-code matrix is correct + ping/pong keepalive is wired.

Step 1 - Pick the client lib