The WebSocket connection to the Genesys Cloud WebRTC signaling endpoint is failing with a 408 Request Timeout error during the initial SDP exchange, specifically when invoked from our AppFoundry-hosted Premium App.
We are observing this behavior consistently in our staging environment, which utilizes a multi-tenant architecture with OAuth 2.0 client credentials flow for authentication. The integration relies on the latest version of the Genesys Cloud WebRTC SDK (v3.2.0) embedded within a React-based interface. When the agent initiates a call, the client successfully establishes the WebSocket connection to the media server, but the subsequent POST request to the /api/v2/analytics/events/websocket endpoint for signaling updates times out after exactly 30 seconds. This suggests a potential issue with the keep-alive mechanism or a misconfiguration in the AppFoundry app’s network policy that might be blocking long-lived connections. We have verified that the OAuth tokens are valid and have the necessary permissions for media operations. Additionally, we have checked the platform API rate limits, and there is no indication of throttling. The issue persists across different browser environments, ruling out client-side caching issues. We are currently investigating whether this is related to the specific region of our BYOC deployment or if there is a known limitation with WebRTC signaling through AppFoundry proxies. Any insights into the expected behavior of the signaling endpoint timeout values or potential workarounds would be greatly appreciated, as this is blocking our QA process for the upcoming release.
Check your WebSocket handshake timeout settings in the AppFoundry container. The 408 often stems from the reverse proxy dropping idle connections before the SDP exchange completes, especially under load.
Try increasing the idle_timeout to 60 seconds in your ingress config. This gives the WebRTC signaling enough breathing room to finish the negotiation without triggering the platform’s rate limits or proxy timeouts.
Check your WebSocket handshake timeout settings in the AppFoundry container.
The proxy config is often wrong for signaling. Use Terraform to enforce the timeout at deployment time. Prevents manual drift.
resource "genesyscloud_appfoundry_config" "this" {
idle_timeout_seconds = 60
}
Have you tried correlating the 408 timeout with the ServiceNow Data Action execution time within your Architect flow? The suggestion above regarding the AppFoundry idle timeout is valid, but the root cause often lies in the synchronous nature of the webhook payload processing. When the Genesys Cloud WebRTC SDK initiates the SDP exchange, it expects a rapid handshake response. If your flow is simultaneously triggering a ServiceNow incident creation or ticket update via a Data Action, the tenant-level API gateway may perceive this as a blocked thread, leading to the 408 status before the WebSocket connection is fully established. The documentation for Genesys Cloud Webhooks explicitly warns against heavy downstream processing during the initial signaling phase.
To mitigate this, implement an asynchronous pattern for the ServiceNow integration. Instead of a direct synchronous Data Action call within the WebRTC trigger flow, use a queue-based approach or a delayed script node to offload the ticket creation task. This ensures the SDP negotiation completes within the expected window, while the ServiceNow record is created in the background. You can configure the Data Action to use a retry policy with exponential backoff, as seen in my previous posts on WFM sync issues. This decoupling prevents the reverse proxy from dropping the connection due to perceived latency. Ensure your OAuth 2.0 token refresh logic also includes a timeout check to avoid hanging the entire session negotiation.