WebSockets & Real-Time Communication

What are the best practices for implementing WebSocket subprotocols?

const protocols = ['json', 'xml'];
const ws = new WebSocket('ws://example.com', protocols);

ws.onopen = (event) => {
    console.log('Connected using:', ws.protocol);
};

// Using the agreed protocol
if (ws.protocol === 'json') {
    ws.send(JSON.stringify({ type: 'message', content: 'Hello' }));
} else if (ws.protocol === 'xml') {
    ws.send('<message><content>Hello</content></message>');
}

Always use default protocol
Mix multiple protocols freely
Define and negotiate protocols during connection
Best practices for WebSocket subprotocols include: 1) Define clear protocol specifications, 2) Implement protocol negotiation during connection establishment, 3) Handle protocol-specific message formatting and parsing, 4) Provide fallback mechanisms, 5) Document protocol requirements and capabilities, 6) Consider versioning for protocol evolution. The code shows proper protocol negotiation and protocol-specific message handling.
Ignore protocol selection

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