SourceOpener listener sometimes disappears unexpectedly after running for days

[jennybrown8]

When SourceOpener has been running in Eclipse open for days, the http listener sometimes seem to vanish. It doesn't happen in the first several hours of usage but does appear after days.

Stopping and restarting the listener via the SourceOpener view works, and it listens to requests again - this is a workaround with no bad side effects.

Need to figure out what causes the listener to stop, and fix it. Memory error? Laptop sleep mode and restore? Idle thread recapture and disposal?