Debug network issues using browser tools and network analysis. Diagnose connection problems, latency, and data transmission issues.
Network debugging identifies connectivity issues, latency problems, and data transmission errors that impact application performance.
Minimal working example:
Chrome DevTools Network Tab:
Columns:
- Name: Request file/endpoint
- Status: HTTP status code
- Type: Resource type (xhr, fetch, etc)
- Initiator: What triggered request
- Size: Resource size / transferred size
- Time: Total time to complete
- Waterfall: Timeline visualization
Timeline Breakdown:
- Queueing: Waiting in queue
- DNS: Domain name resolution
- Initial connection: TCP handshake
- SSL: SSL/TLS negotiation
- Request sent: Time to send request
- Waiting (TTFB): Time to first byte
- Content Download: Receiving response
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Network Conditions:
Throttling Presets:
- Fast 3G: 1.6 Mbps down, 750 Kbps up
// ... (see reference guides for full implementation)
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Browser Network Tools | Browser Network Tools |
| Common Network Issues | Common Network Issues |
| Debugging Tools & Techniques | Debugging Tools & Techniques |
| Checklist | Checklist |