WebSocket Guest API: Handling 1008 Policy Violation on custom chat UI

Looking for some advice on troubleshooting this persistent 1008 close code when building a custom chat interface using the WebSocket Guest API. We’ve ditched the default widget to match our brand, but the connection drops immediately after the initial handshake and first message send.

Here’s the stack trace from the frontend console:

WebSocket connection to 'wss://api.mypurecloud.com/api/v2/guest-conversations/websocket' failed:
WebSocket is closed before the connection is established.

Error: WebSocket closed with code 1008 (Policy Violation)
 at WebSocket.onclose (client.js:142)

The connection opens fine. I get the session_id back in the open event. I’m sending the initial message command with the exact JSON structure from the docs. Here is the payload I’m pushing to the socket:

{
 "command": "message",
 "conversationId": "conv-98765432-1234-5678-abcd-ef0123456789",
 "text": "Hello, I need help with my account.",
 "timestamp": "2023-10-27T14:30:00Z"
}

I’ve verified the conversationId is valid and active via the REST API. The token used for the initial GET to start the conversation has the conversation:guest:view and conversation:guest:write scopes.

My suspicion is that the timestamp format or the command casing is triggering the policy violation, but the docs aren’t explicit about strict validation on the WS side versus the REST side. I’ve tried removing the timestamp and sending just command, conversationId, and text, but still get the 1008.

Is there a specific header or auth mechanism required on the WebSocket upgrade request beyond the initial token exchange? Or is the Guest API WS endpoint expecting a different JSON schema for the first message? We’re running this on Node.js 18 using the native ws package. No proxy issues, direct connection. Appreciate any pointers on what triggers this specific close code in this context.

This is actually a known issue… The docs say “the origin must match the allowed origins in the integration settings.” i usually verify this via C# first.

var client = new PureCloudPlatformClientV2();
var integration = await client.IntegrationApi.GetIntegrationAsync(id);
Console.WriteLine(integration.AllowedOrigins);

check if your custom domain is listed there. missing origins trigger 1008 instantly.

Have you tried checking the integration configuration directly via the API instead of relying on the UI, which sometimes caches stale origin lists? The 1008 close code is almost always a policy violation tied to the Origin header not matching the whitelist in your Integration settings. You can verify the allowed origins using the PureCloudPlatformClientV2 SDK. Here’s how to fetch and check them:

from genesyscloud import PureCloudPlatformClientV2

client = PureCloudPlatformClientV2()
integration_api = client.get_integration_api()

try:
 integration = integration_api.get_integration(integration_id="your_integration_id")
 print("Allowed Origins:", integration.allowed_origins)
except Exception as e:
 print("Error fetching integration:", e)

Make sure your custom domain is explicitly listed in the allowed_origins array. If it’s missing, the WebSocket handshake fails with a 1008 close code. Also, double-check that you’re sending the correct Origin header in your WebSocket connection request. The header should match the domain exactly, including the protocol (http vs https). For more details, check the WebSocket Guest API documentation.

If the origins are correct and you’re still seeing the issue, try adding the X-Genesys-Integration header to your WebSocket connection request. This header should contain the integration ID. It helps the platform validate the request against the correct integration settings.

const ws = new WebSocket('wss://api.mypurecloud.com/api/v2/guest-conversations/websocket', {
 headers: {
 'Origin': 'https://your-custom-domain.com',
 'X-Genesys-Integration': 'your_integration_id'
 }
});

This should resolve the 1008 close code. If it doesn’t, check the server logs for more detailed error messages.

Ah, yeah, this is a known issue… turns out it wasn’t the origin header. my Next.js middleware was stripping it during the proxy pass. once i explicitly forwarded the Origin header in the server component, the 1008 stopped. weird how the widget handles it differently.