The mobile app keeps dropping custom Data Actions when they try to hit our internal Node endpoint. React Native is on 0.73, running @genesys/web-messaging-sdk v1.2.4. The flow works perfectly in Safari, but iOS builds consistently time out. Architect v38.1 is throwing a 502 Bad Gateway on the POST node.
Payload mapping looks standard enough.
{
"contactId": "{{contact.contactId}}",
"pushToken": "{{input.pushToken}}",
"platform": "ios"
}
It doesn’t even hit the Lambda. Genesys console just spits out data_action_execution_failed. Network inspector shows the WebSocket frame leaving the device, then the connection hangs for exactly 15 seconds. SDK logs dump this right after the timeout:
[WebMessaging] dataAction: timeout exceeded (15000ms)
[WebMessaging] session state: degraded
Session persistence is enabled. Deep linking routes are mapped. The guestId matches what the Architect flow receives. Switched the Data Action to a GET request just to test basic connectivity. It didn’t help. Added a retry policy on the Architect node. Same result. The internal API responds instantly when hit from Postman.
Timezone is America/Sao_Paulo. Maybe the SDK is stripping headers that the regional SBC expects. Or there’s a hidden payload size limit for mobile guests. The docs don’t mention anything about WebSocket frame fragmentation breaking the JSON body. The SDK is doing jack all when it hits that timeout. The whole flow totally bricks after the hang.
Raw Architect debug trace shows the requestId matching, but executionState flips to FAILED immediately after the node transition. No useful stack trace in the GC logs.
2024-05-12T18:44:01.203Z [WARN] data_action_node: upstream_timeout
2024-05-12T18:44:16.204Z [ERROR] request_failed: 502
Think of the Data Action like a courier service. If the package is too heavy or the window closes too fast, the system returns a 502 error. Mobile networks often introduce delays that desktop browsers handle easily. It’s usually a timeout mismatch.
First, check the timeout setting on the HTTP Request node. You’ll want to bump it to 15000 milliseconds. Second, verify the payload size limit in your Architect flow. React Native SDK sessions sometimes attach device metadata that pushes the body over the default threshold.
Try splitting the POST if the data exceeds 4KB. A common workaround involves routing the call through a retry logic block set to 2 attempts.
Are you passing the full contact snapshot or just the push token? The endpoint might be rejecting the request due to strict CORS headers on iOS. Adjust the security context to allow mobile origins.
Problem
The timeout bump actually fixed the 502 drop. Mobile sessions were timing out before the Node endpoint processed the payload. Safari handles it fine, but it’s the iOS network stack that drops the packet early.
Code
Updated the HTTP Request node timeout and added a retry decorator to the Python client wrapper.
@retry(max_retries=2, backoff=1.5)
def post_data_action(url: str, payload: dict) -> dict:
headers = {"Content-Type": "application/json"}
return requests.post(url, json=payload, headers=headers, timeout=15.0)
Error
The first run still threw requests.exceptions.ConnectTimeout. Make sure the Node endpoint allows CORS preflight for mobile origins, or the SDK drops the connection before it even hits the timeout window. The payload mapping also needs strict type casting.
Question
Does the Architect flow require a manual retry policy on the HTTP node, or should the SDK handle the backoff entirely. The docs are quiet on this part.