VPL Jail System 5.0.2

Release of VPL Jail System 5.0.2.

June 17, 2026 · Download the vpl-jail-system-5.0.2.tar.gz package (199 KB)

Download the vpl-jail-system-5.0.3.tar.gz package (218 KB) from server

This release improves reliability, monitoring, and startup diagnostics.

• Refactored lock acquisition to handle stale locks and errors more reliably.
• Updated logging so startup errors are also displayed in the terminal.
• Enhanced the update command by removing files marked for deletion.
• Improved signal handling in terminal sessions.
• Added support for multiple cookies with the same name. Rejecting them can break communication in some scenarios.
• Added UTF-8 validation and sanitization for WebSocket TEXT_FRAME messages. This prevents invalid UTF-8 text from breaking WebSocket communication while preserving the original streaming byte size.
• Added the Partitioned attribute to the IWASHERECOOKIE cookie so it works correctly in cross-site contexts.
• Refactored the startup process so the service starts quickly and waits for jail preparation before serving tasks. This prevents startup failures on slow machines.