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Getting below error Uncaught “negotiation timed o...
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a
Getting below error Uncaught “negotiation timed out”
t
Thanks for reaching out, Umang. I'm an AI assistant and I'm here to help. Give me a moment while I research this topic.
The “negotiation timed out” error indicates that the WebRTC connection process in LiveKit could not complete within the expected timeframe. This is usually due to: • Network connectivity issues, causing the negotiation handshake to fail • Firewall or NAT restrictions that block UDP or specific ports, interrupting the ICE or DTLS+SRTP phases • Issues with LiveKit server connectivity or peer connection establishment To resolve this: • Check your network and firewall configuration. Ensure UDP traffic and required ports for WebRTC are open. For restrictive networks, configure the client to use TURN relay servers by setting 
iceTransportPolicy: 'relay'
in your RTC config. • Whitelist *.turn.livekit.cloud on TCP/443 for TURN over TLS to improve success through firewalls. • Use the LiveKit Connection Tester to diagnose where the negotiation fails—especially looking at UDP and DTLS stages. • Review the stability of your network connection and check for any outages or high latency. Adjusting connection timeout values is possible, but typically you’ll want to address underlying connectivity or firewall issues first. If you need steps for a specific SDK or further details on configuring TURN or ICE options, let me know which environment you’re using. Sources: lib/src/core/engine.dart | src/room/RTCEngine.ts | pkg/rtc/transport_test.go | Firewall Tips
a
We are using livekit-client: 2.15.0
t
Hey there! Let's tackle the "negotiation timed out" error in livekit-client 2.15.0 together. I know these connection issues can be super frustrating, but we've got some friendly solutions to help you out. • Network/Firewall Checks: First things first, run the LiveKit Connection Tester to see what might be blocking your connection. If your network is being a bit stubborn, no worries! You can force TURN/TLS with: `{ rtcConfig: { iceTransportPolicy: 'relay' } }`Just whitelist *.turn.livekit.cloud on TCP/443, and we should be good to go! • Increase Peer Connection Timeout: Got a slow network? We've got your back. Try extending the timeout like this: `{ peerConnectionTimeout: 30000 }`This gives your connection a bit more breathing room. • Retry Logic: Sometimes connections need a little extra patience. Here's a smart retry strategy:
Copy code
const retryDelays = [0, 300, 600, 1200, 2400, 7000];
// Retry in sequence if negotiation times out
• Monitor ICE/DTLS Handshake: Think of this like listening to your connection's heartbeat. Using event handlers and browser logs can help us pinpoint exactly where things might be getting stuck. • Debug Logging: Want to see what's happening behind the scenes? Set 
logLevel: LogLevel.debug
when creating the Room for a backstage pass to your connection details. • Server and Environment Factors: Let's do a quick check on server health and network conditions – sometimes the issue is hiding in plain sight! Most connection hiccups are totally solvable! If you're still seeing issues after trying these steps, don't worry – just grab those detailed logs, and we'll work through this together. You've got this, and we're here to help! Sources: src/room/RTCEngine.ts | Firewall Tips | lib/src/exceptions.dart | livekit/src/rtc_engine/rtc_session.rs | pkg/rtc/transport.go
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