Mercurial > prosody-modules
view mod_graceful_shutdown/README.markdown @ 5951:d6a695abb33c
mod_ping_muc: Delay ping a configurable amount of time
If a server is restarting, checking immediately before it has a chance
to complete its restart and get ready would often fail, preventing the
possibility of transparent restarts as supported by Prosody's mod_muc.
Reconnecting immediately when a connection is closed for being idle, or
because the remote server is trying to reclaim some resources, is also
counter-productive as the connection may fail.
Also, if there is some Internet routing problem affecting s2s, it may
help to wait a bit before checking, in case the problem resolved itself
in the mean time.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Sun, 11 Aug 2024 16:10:24 +0200 |
| parents | 999e7cb7f6d9 |
| children |
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::: {.alert .alert-warning} This module is an experiment about a more graceful shutdown process. Graceful shutdown has now been implemented in Prosody trunk and will be part 0.12. See [issue #1225](https://issues.prosody.im/1225) for details. ::: Why === When shutting down, a number of sessions, connections and other things are teared down. Due to all these things happening very quickly, sometimes e.g. client unavailable notifications don't make it to all remote contacts because the server-to-server connections are teared down just after. How === This module works by breaking the shutdown process into separate steps with a brief pause between them. It goes something like this 1. Stop accepting new client connections. 2. Close all client connections. 3. Fire event for everything else. 4. Tell `net.server` to quit the main loop. 5. ??? 6. Still here? Kill itself.