Hi Ike,

In the log, there is no trace of the WebSocket protocol upgrade requests, neither successful nor any errors.
It's possible that there is an intermediary between your client and the server that intercepts WebSocket requests?
In fact, if, for any reason, WebSocket transport is blocked in your environment, it would be better to force the use of HTTP streaming with this client setting:

client.connectionOptions.ForcedTransport = "HTTP";

https://sdk.lightstreamer.com/ls-dot...orcedTransport