Websocket connection closed immediately after connected

[tanto-satu]

Hi,

Currently im installing featbit in my cloud server in GCP using GCE, but after installing with docker compose, and setup the nginx, when trying to connect from postman, i got this error

is it expected?

and also when trying to using react SDK from featbit, in several machine the flag is not stored in local storage, but when i see the network tab, the connection is returning 101 from /streaming URL, but there is no receive message from server, only push message from client is available there. is anyone have the same experience?

[deleteLater]

Hi @tanto-satu, sorry for the late reply. The server returns 4003 error when we failed to validate the websocket connection. In your case, I'm gonna assume that you got this request string wss://app-eval... from our SDK, but this token would expire in 30 seconds, which is most likely the reason why the server rejected it.

in several machine the flag is not stored in local storage
there is no receive message from server

If this problem is caused by the 4003 error, I would recommend you try to check if your server's local time is correctly synchronized.

Relevant code snippet

• https://github.com/featbit/featbit/blob/main/modules/evaluation-server/src/Streaming/StreamingMiddleware.cs#L36-L46
• https://github.com/featbit/featbit/blob/main/modules/evaluation-server/src/Streaming/Connections/RequestValidator.cs#L25-L31