Stop publication cache task on disconnected channels #1676
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While debugging ZettaScaleLabs/rmw_zenoh#44, GDB backtraces showed that the
Netruntime was apparently blocked executing this publication cache task; applying this patch solved the issue.Even though the blocking behavior I observed might've been a consequence of different underlying issue, I think this patch should be applied anyway. This is because:
tokio::select!macro doesn't execute poll each branch on every iteration, but rather uses a random number generator to choose the branch.