Bolt api

WebSocket Connection Fails - Real-time Features Not Working

WebSocket connections fail to establish. Real-time features don't work. Users don't receive live updates.

Connection hangs or connects then disconnects immediately.

Error Messages You Might See

WebSocket connection failed Error: WebSocket is closed ERROR: connection reset by peer WebSocket: error during handshake
WebSocket connection failedError: WebSocket is closedERROR: connection reset by peerWebSocket: error during handshake

Common Causes

  1. Server doesn't support WebSocket upgrades
  2. Proxy/firewall blocking WebSocket (wss protocol)
  3. Incorrect WebSocket URL (ws vs wss)
  4. CORS/origin headers missing for WebSocket
  5. WebSocket message parsing error

How to Fix It

Use wss:// (secure WebSocket) in production, ws:// for local dev

Verify server supports WebSocket: check framework docs (Next.js uses socket.io or similar)

Add origin check: allow your domain in WebSocket upgrade handler

Handle reconnection: exponential backoff when connection drops

Test locally: use browser DevTools Network tab to monitor WebSocket frames

Real developers can help you.

Antriksh Narang Antriksh Narang 5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies. Milan Surelia Milan Surelia Milan Surelia is a Mobile App Developer with 5+ years of experience crafting scalable, cross-platform apps at 7Span and Meticha. At 7Span, he engineers feature-rich Flutter apps with smooth performance and modern UI. As the Co-Founder of Meticha, he builds open-source tools and developer-focused products that solve real-world problems. Expertise: πŸ’‘ Developing cross-platform apps using Flutter, Dart, and Jetpack Compose for Android, iOS, and Web. πŸ–‹οΈ Sharing insights through technical writing, blogging, and open-source contributions. 🀝 Collaborating closely with designers, PMs, and developers to build seamless mobile experiences. Notable Achievements: 🎯 Revamped the Vepaar app into Vepaar Store & CRM with a 2x performance boost and smoother UX. πŸš€ Launched Compose101 β€” a Jetpack Compose starter kit to speed up Android development. 🌟 Open source contributions on Github & StackOverflow for Flutter & Dart πŸŽ–οΈ Worked on improving app performance and user experience with smart solutions. Milan is always happy to connect, work on new ideas, and explore the latest in technology. Vlad Temian Vlad Temian 15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox). Cursor ambassador and agentic tooling builder. I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti. I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks. https://blog.vtemian.com/ Jen Jacobsen Jen Jacobsen I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle β€” turning ideas into real, well-built products that are intuitive for users and scalable for businesses. I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain. Simon A. Simon A. I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows. Pratik Pratik SWE with 15+ years of experience building and maintaining web apps and extensive BE infrastructure Richard McSorley Richard McSorley Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures. David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. Matthew Butler Matthew Butler Systems Development Engineer @ Amazon Web Services Sage Fulcher Sage Fulcher Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)

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Frequently Asked Questions

Should I use ws or wss?

Always wss (secure). ws only for local development

How do I implement reconnect?

On close, wait 1s then reconnect. If fails, wait 2s, 4s, etc. Max 5-10 retries

What's socket.io vs raw WebSocket?

socket.io adds features (rooms, acknowledgments, auto-reconnect). Use socket.io unless you need raw protocol

Related Bolt Issues

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