drecothea
04/09/2025, 1:11 PMVapi Support Bot
04/09/2025, 1:13 PMVapi Support Bot
04/09/2025, 1:13 PMwscat
to test WebSocket connections if you're using WebSockets:
sh
wscat -c wss://aws-us-west-2-production1-phone-call-websocket.vapi.ai/<call-id>/transport
### 4. Implement Better Error Handling
Enhance your error handling to capture more detailed information:
javascript
// Example for WebSocket connections
const handleError = (ws, source) => {
ws.on('error', (error) => {
console.error(`${source} WebSocket error:`, error);
});
ws.on('close', (code, reason) => {
console.log(`${source} WebSocket closed:`, code, reason.toString());
});
};
### 5. Check for Specific Errors
Look for these common error patterns:
- 524 error codes (indicating timeouts)
- "Over concurrency limit" errors
- 491 Request Pending errors (especially with SIP transfers)
- JSON formatting issues in responses
If you're still experiencing issues after trying these steps, could you share more specific details about your implementation and any error messages you're seeing?
Sources:
- [Troubleshooting Vapi function calls not executing](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336456720913797238)
- [Common problems with Vapi function calls not executing](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1336345690393149452)
- [Debugging techniques for Vapi function calls](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1329235631855108128)
- [Vapi function call error handling and logging](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1341810370700120064)
- [Reasons for high failure rate of Vapi function calls](https://discord.com/channels/1211482211119796234/1211483291191083018/threads/1334159219649417289)Kyle Brunker
04/11/2025, 7:25 AM