Mercurial > prosody-modules
view mod_graceful_shutdown/README.markdown @ 5295:98d5acb93439
mod_authz_delegate: make resistant against startup order issues
There is no guarantee that the target_host gets activated and
initialized before the host this module is loaded on. As
add_default_permission is called during load time by many modules,
we need to be prepared to queue stuff.
| author | Jonas Schäfer <jonas@wielicki.name> |
|---|---|
| date | Fri, 31 Mar 2023 16:56:42 +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.