We’re spinning up a custom chat interface in Rust to replace the out-of-the-box Genesys widget. The goal is to handle the WebSocket handshake directly against the guest API endpoint instead of relying on the SDK’s iframe. Tokio manages the async connections while serde handles the JSON parsing. Everything works fine until the initial upgrade request.
The client sends the standard HTTP/1.1 GET to wss://api.mypurecloud.com/api/v2/webchat/v1/sessions/abc123/stream. The server responds with a 401 Unauthorized on the handshake. We’re passing the Authorization: Bearer header along with X-Genesys-Platform-Id. The token definitely has the webchat:guest scope. We’ve verified it works against the REST endpoints without any issues.
Here’s the connection setup:
let uri = “wss://api.mypurecloud.com/api/v2/webchat/v1/sessions/abc123/stream”;
let (mut ws, _) = tokio_tungstenite::connect_async(uri).await.unwrap();
The notification stream docs mention a specific Origin header requirement. Stripping it out just shifts the error to 403 Forbidden. Tokio keeps retrying the connection loop until the rate limiter kicks in. The payload we’re trying to send after handshake is just a basic {“type”: “message”, “text”: “test”}. Sao Paulo network latency isn’t the issue here. The handshake fails locally too. It’s definitely not a routing problem. Tungstenite logs show the upgrade request goes out fine. Not sure if the platform expects a specific subprotocol string.
Anyone else hitting auth mismatches on the raw WebSocket stream? The SDK source code shows it’s doing some extra header manipulation before the upgrade. We need to know exactly which headers the guest endpoint validates during the handshake phase. The connection just hangs after the second retry.