This event was added in a7c183bb4e64 and is required to make mod_smacks know
that a session was intentionally closed and shouldn't be hibernated (see
fcea4d9e7502).
Because this was missing from mod_websocket's session.close(), mod_smacks
would always attempt to hibernate websocket sessions even if they closed
cleanly.
That mod_websocket has its own copy of session.close() is something to fix
another day (probably not in the stable branch). So for now this commit makes
the minimal change to get things working again.
Thanks to Damian and the Jitsi team for reporting.
When mod_admin_socket is loaded without mod_admin_shell, attempt to use
`prosodyctl shell` will appear to freeze after any input, since no
response is returned.
This information is sometimes necessary in the context where we have a
connection that we know (or believe to be) associated with an incoming HTTP
request.
For example, it can be used to retrieve the IP address of a request (which may
differ from the IP address of the connection, due to X-Forwarded-For and co).
Thanks to the Jitsi team for highlighting this gap in the API.
This ensures that we support responses without a content-length header, and
allow streaming them through the streaming handler interface. An example of
such a response would be Server-Sent Events streams.
With `gcc-12 -Wstrict-prototypes` the following warning is shown:
crypto.c:43:13: warning: function declaration isn't a prototype [-Wstrict-prototypes]
43 | static BIO* new_memory_BIO() {
| ^~~~~~~~~~~~~~
Ensures a last round of garbage collection and that finalizers are
called. Fixes things like proper closing of SQLite3 state.
There are more calls to os.exit() but most of them exit with an error or
in a case where a final GC sweep might not matter as much.
It would be nice if this was the default.
Calling util.statup.exit() everywhere may be sensible, but would be more
involved, requiring imports everywhere.
This ensures a last round of garbage collection and finalizers, which
should include flushing the readline history file.
Test procedure:
```
$ ./prosodyctl shell
prosody> s2s:show() -- any command that is not the last in history
... output
prosody> bye
$ ./prosodyctl shell
prosody> ^P
```
After this, the shell prompt should contain the last command from before
the "bye". Before this patch, recent history is gone most of the time.
On regular disconnects, </stream> is sent, then
sessionmanager.destroy_session() is called, then
sessionmanager.destroy_session() is called again when the TCP connection
is closed, from ondisconnect in mod_c2s.
It is a bit annoying and doesn't really tell you much.
