SMG Throws WebSocket Connection Errors After Upgrading CAS

Products

• Messaging Gateway

Issue/Introduction

After upgrading Content Analysis System (CAS) to version 4.1.2, Symantec Messaging Gateway (SMG) fails to maintain a WebSocket connection to the CAS server. Log files indicate connection initialization failures and unexpected termination handlers.

[ERROR]: casoop: websocket connection to CAS server <CAS_IP_ADDRESS> threw exception: connection hdl was not set.
[ERROR]: casoop: websocket connection error received by on_fail handler: server <CAS_IP_ADDRESS> End of File

Cause

This issue is isolated to software changes introduced in CAS version 4.1.2, which disrupt the WebSocket communication handshake required by casoop on the SMG side.

Resolution

Workaround: There is currently no operational configuration workaround. The only temporary mitigation is to roll back CAS to a stable release in the 4.3.x train.

Resolution: Engineering is actively developing a permanent fix for an upcoming release patch.