There is an issue reported that the customer Test/Prod environments can not get the IFS Streams functionality working.
Streams are not working and a warning sign on the streams pannel is shown and error message states that 'Push notifications disconnected. Streams will reconnect automatically once the service is available'.
Checking in the logs it states
.... [NO_RESOURCES] (Active Websocket Connection Limit Reached)
Checking in the debug console it states.
Category : Framework
Sub Category : FndWebSocketService
Info : Error : The remote server returned an error: (503) Server Unavailable.
Thread : 0x000C - [background]
Following is the HTTP server configuration of the customer environments.
IPROD ITEST PROD
Thread Limit 600 2667 600
Threads per Child 600 2667 600
MaxWebsocketClients 900 2000 450